| 1 |
REQUIRE "cost_column.a4l"; |
| 2 |
(* => cost_column.a4l, atoms.a4l, measures.a4l, system.a4l, basemodel.a4l *) |
| 3 |
REQUIRE "flash.a4l"; |
| 4 |
(* => flash.a4l, stream_holdup.a4l, thermodynamics.a4l, components.a4l, |
| 5 |
* phases.a4l, atoms.a4l, measures.a4l, system.a4l, basemodel.a4l *) |
| 6 |
REQUIRE "ternary_plot.a4l"; |
| 7 |
(* => ternary_plot.a4l, plot.a4l, atoms.a4l, measures.a4l, system.a4l, |
| 8 |
* basemodel.a4l *) |
| 9 |
PROVIDE "collocation.a4l"; |
| 10 |
|
| 11 |
(* |
| 12 |
* collocation.a4l |
| 13 |
* by Robert S. Huss |
| 14 |
* major revisions by Kenneth H. Tyner |
| 15 |
* Part of the ASCEND Library |
| 16 |
* $Date: 1998/06/17 19:46:38 $ |
| 17 |
* $Revision: 1.6 $ |
| 18 |
* $Author: mthomas $ |
| 19 |
* $Source: /afs/cs.cmu.edu/project/ascend/Repository/models/collocation.a4l,v $ |
| 20 |
* |
| 21 |
* This file is part of the ASCEND Modeling Library. |
| 22 |
* |
| 23 |
* Copyright (C) 1994, 1997 Carnegie Mellon University |
| 24 |
* |
| 25 |
* The ASCEND Modeling Library is free software; you can redistribute |
| 26 |
* it and/or modify it under the terms of the GNU General Public |
| 27 |
* License as published by the Free Software Foundation; either |
| 28 |
* version 2 of the License, or (at your option) any later version. |
| 29 |
* |
| 30 |
* The ASCEND Modeling Library is distributed in hope that it |
| 31 |
* will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 32 |
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 33 |
* See the GNU General Public License for more details. |
| 34 |
* |
| 35 |
* You should have received a copy of the GNU General Public License |
| 36 |
* along with the program; if not, write to the Free Software |
| 37 |
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139 USA. Check |
| 38 |
* the file named COPYING. |
| 39 |
*) |
| 40 |
|
| 41 |
(* |
| 42 |
C O L L O C A T I O N . A 4 L |
| 43 |
----------------------------- |
| 44 |
|
| 45 |
AUTHORS: Robert S. Huss |
| 46 |
Kenneth H. Tyner |
| 47 |
|
| 48 |
DATES: 5/95 - First Public Release |
| 49 |
4/96 - Modified for using constant instance types |
| 50 |
6/97 - Second Public Release |
| 51 |
Now using parameterized models. |
| 52 |
|
| 53 |
CONTENTS: Collocation models for distillation modeling. |
| 54 |
|
| 55 |
|
| 56 |
|
| 57 |
|
| 58 |
REQUIRES: "system.a4l" |
| 59 |
"atoms.a4l" |
| 60 |
"components.a4l" |
| 61 |
"thermodynamics.a4l" |
| 62 |
"plot.a4l" |
| 63 |
"stream.a4l" |
| 64 |
"flash.a4l" |
| 65 |
|
| 66 |
*) |
| 67 |
|
| 68 |
MODEL coll_partial_condenser( |
| 69 |
Qin WILL_BE energy_rate; |
| 70 |
vapin WILL_BE stream; |
| 71 |
liqout WILL_BE stream; |
| 72 |
distillate WILL_BE stream; |
| 73 |
equilibrated WILL_BE boolean; |
| 74 |
) WHERE ( |
| 75 |
vapin, liqout, distillate WILL_NOT_BE_THE_SAME; |
| 76 |
distillate.state, liqout.state WILL_NOT_BE_THE_SAME; |
| 77 |
distillate.cd, liqout.cd, vapin.cd WILL_BE_THE_SAME; |
| 78 |
vapin.pd.phase_indicator IN ['V','M'] == TRUE; |
| 79 |
liqout.pd.phase_indicator == 'L'; |
| 80 |
distillate.pd.phase_indicator == 'VL'; |
| 81 |
) REFINES flash_base; |
| 82 |
|
| 83 |
NOTES |
| 84 |
'purpose' SELF { |
| 85 |
This models a condenser that produces a two phase stream as a |
| 86 |
distillate product. This is primarilly used for modeling a total |
| 87 |
condenser with a saturated liquid product. |
| 88 |
} |
| 89 |
'ascii-picture' SELF { |
| 90 |
| |
| 91 |
v Vapin |
| 92 |
/-------------\ |
| 93 |
|OOOOOOOOOOOOO+--< Qin |
| 94 |
|~~~~~~~~~~~~~| |
| 95 |
\_____________+--> Distillate |
| 96 |
| Liqout |
| 97 |
v |
| 98 |
} |
| 99 |
END NOTES; |
| 100 |
|
| 101 |
cd ALIASES vapin.cd; |
| 102 |
state ALIASES distillate.state; |
| 103 |
P ALIASES state.P; |
| 104 |
T ALIASES state.T; |
| 105 |
|
| 106 |
reflux_ratio IS_A factor; |
| 107 |
|
| 108 |
reflux_eqn: (liqout.flow - reflux_ratio * distillate.flow) |
| 109 |
/ flowscale = 0; |
| 110 |
|
| 111 |
FOR i IN cd.other_components CREATE |
| 112 |
distillate.state.y[i] = vapin.state.y[i]; |
| 113 |
liqout.state.y[i] = vapin.state.y[i]; |
| 114 |
END FOR; |
| 115 |
|
| 116 |
liqout.T = distillate.T; |
| 117 |
liqout.P = distillate.P; |
| 118 |
|
| 119 |
flowscale IS_A molar_rate_scale; |
| 120 |
(vapin.flow - distillate.flow - liqout.flow) / flowscale = 0; |
| 121 |
|
| 122 |
H_flowscale IS_A energy_rate_scale; |
| 123 |
energy_balance: (vapin.H_flow + Qin - |
| 124 |
(liqout.H_flow + distillate.H_flow)) / H_flowscale =0; |
| 125 |
|
| 126 |
|
| 127 |
|
| 128 |
METHODS |
| 129 |
|
| 130 |
METHOD check_all; |
| 131 |
RUN vapin.check_all; |
| 132 |
RUN liqout.check_all; |
| 133 |
RUN distillate.check_all; |
| 134 |
RUN check_self; |
| 135 |
END check_all; |
| 136 |
|
| 137 |
METHOD check_self; |
| 138 |
IF (vapin.flow < 1e-4 {mole/s}) THEN |
| 139 |
STOP {Vapor flow to condenser disappeared}; |
| 140 |
END IF; |
| 141 |
IF (liqout.flow < 1e-4 {mole/s}) THEN |
| 142 |
STOP {No reflux leaving condenser}; |
| 143 |
END IF; |
| 144 |
IF (distillate.flow < 1e-4 {mole/s}) THEN |
| 145 |
STOP {No distillate leaving condenser}; |
| 146 |
END IF; |
| 147 |
IF (abs(vapin.flow - |
| 148 |
distillate.flow - liqout.flow)/flowscale > 1.0e-4) THEN |
| 149 |
STOP {Condensor violates overall mass-balance}; |
| 150 |
END IF; |
| 151 |
END check_self; |
| 152 |
|
| 153 |
METHOD default_self; |
| 154 |
H_flowscale := vapin.H_flow + abs(Qin); |
| 155 |
flowscale := vapin.Details.flowscale; |
| 156 |
reflux_ratio := 10; |
| 157 |
reflux_ratio.upper_bound := 1000; |
| 158 |
reflux_ratio.lower_bound := 0; |
| 159 |
END default_self; |
| 160 |
|
| 161 |
METHOD default_all; |
| 162 |
RUN vapin.default_all; |
| 163 |
RUN liqout.default_all; |
| 164 |
RUN distillate.default_all; |
| 165 |
RUN default_self; |
| 166 |
END default_all; |
| 167 |
|
| 168 |
METHOD bound_self; |
| 169 |
reflux_ratio.lower_bound := |
| 170 |
reflux_ratio - boundwidth * reflux_ratio.nominal; |
| 171 |
reflux_ratio.upper_bound := |
| 172 |
reflux_ratio + boundwidth * reflux_ratio.nominal; |
| 173 |
IF (reflux_ratio.lower_bound < 0) THEN |
| 174 |
reflux_ratio.lower_bound := 0; |
| 175 |
END IF; |
| 176 |
END bound_self; |
| 177 |
|
| 178 |
METHOD bound_all; |
| 179 |
vapin.boundwidth := boundwidth; |
| 180 |
liqout.boundwidth := boundwidth; |
| 181 |
distillate.boundwidth := boundwidth; |
| 182 |
RUN vapin.bound_all; |
| 183 |
RUN liqout.bound_all; |
| 184 |
RUN distillate.bound_all; |
| 185 |
RUN bound_self; |
| 186 |
STOP {MODEL total_condenser method bound_all needs to do Qin}; |
| 187 |
END bound_all; |
| 188 |
|
| 189 |
METHOD scale_self; |
| 190 |
flowscale := vapin.Details.flowscale + liqout.Details.flowscale |
| 191 |
+ distillate.Details.flowscale; |
| 192 |
H_flowscale := liqout.Details.H_flowscale + vapin.Details.H_flowscale |
| 193 |
+ distillate.Details.H_flowscale; |
| 194 |
reflux_ratio.nominal := abs(reflux_ratio)*1.01 + 1; |
| 195 |
END scale_self; |
| 196 |
|
| 197 |
METHOD scale_all; |
| 198 |
RUN vapin.scale_all; |
| 199 |
RUN liqout.scale_all; |
| 200 |
RUN distillate.scale_all; |
| 201 |
RUN scale_self; |
| 202 |
STOP {MODEL total_condenser method scale_all needs to do Qin}; |
| 203 |
END scale_all; |
| 204 |
|
| 205 |
METHOD seqmod; |
| 206 |
RUN liqout.seqmod; |
| 207 |
RUN distillate.seqmod; |
| 208 |
RUN vapin.seqmod; |
| 209 |
reflux_ratio.fixed := TRUE; |
| 210 |
liqout.T.fixed := FALSE; |
| 211 |
liqout.P.fixed := FALSE; |
| 212 |
END seqmod; |
| 213 |
|
| 214 |
METHOD specify; |
| 215 |
RUN seqmod; |
| 216 |
RUN vapin.specify; |
| 217 |
END specify; |
| 218 |
|
| 219 |
END coll_partial_condenser; |
| 220 |
|
| 221 |
MODEL lagrange_polynomial( |
| 222 |
ntrays WILL_BE integer_constant; |
| 223 |
); |
| 224 |
|
| 225 |
npoints, |
| 226 |
order IS_A integer_constant; |
| 227 |
W[0..npoints][0..order], |
| 228 |
w_tray[0..ntrays+1], |
| 229 |
w_points[0..npoints], |
| 230 |
w_mid IS_A factor; |
| 231 |
f_int, |
| 232 |
f_mid IS_A fraction; |
| 233 |
scale IS_A scaling_constant; |
| 234 |
|
| 235 |
npoints :== 2*ntrays + 1; |
| 236 |
order :== ntrays; |
| 237 |
|
| 238 |
w_tray[0], |
| 239 |
w_points[0] ARE_THE_SAME; |
| 240 |
w_tray[ntrays+1], |
| 241 |
w_points[npoints] ARE_THE_SAME; |
| 242 |
|
| 243 |
w_mid = w_tray[0] + f_mid*(w_tray[ntrays+1] - w_tray[0]); |
| 244 |
|
| 245 |
FOR i IN [0..npoints] CREATE |
| 246 |
FOR k IN [0..ntrays] CREATE |
| 247 |
W[i][k]*PROD[(w_tray[k] - w_tray[j]) | j IN |
| 248 |
[0..k-1,k+1..ntrays]] = PROD[(w_points[i] - w_tray[j]) |
| 249 |
| j IN [0..k-1,k+1..ntrays]]; |
| 250 |
END FOR; |
| 251 |
END FOR; |
| 252 |
|
| 253 |
(* point spacing equations *) |
| 254 |
even IS_A boolean_constant; |
| 255 |
tray_comp IS_A integer_constant; |
| 256 |
|
| 257 |
tray_comp :== 2*(ntrays/2); |
| 258 |
even :== (tray_comp == ntrays); |
| 259 |
|
| 260 |
|
| 261 |
count IS_A integer_constant; |
| 262 |
mult[1..ntrays] IS_A factor; |
| 263 |
f_count IS_A factor; (* need floating point arithmetic |
| 264 |
to set up multipliers *) |
| 265 |
f_ntrays IS_A factor; (* need floating point arithmetic |
| 266 |
to set up multipliers *) |
| 267 |
|
| 268 |
SELECT (even) |
| 269 |
CASE FALSE: (* odd number OF trays *) |
| 270 |
count :== (ntrays + 1)/2; |
| 271 |
w_tray[count], w_mid ARE_THE_SAME; |
| 272 |
FOR i IN [1..count - 1] CREATE |
| 273 |
w_tray[i] = w_mid - f_int*mult[i]*(w_mid - w_tray[0]); |
| 274 |
END FOR; |
| 275 |
FOR i IN [count + 1..ntrays] CREATE |
| 276 |
w_tray[i] = w_mid + f_int*mult[i]*(w_mid - w_tray[0]); |
| 277 |
END FOR; |
| 278 |
CASE TRUE: (* even number OF trays *) |
| 279 |
count :== ntrays/2; |
| 280 |
FOR i IN [1..count] CREATE |
| 281 |
w_tray[i] = w_mid - f_int*mult[i]*(w_mid - w_tray[0]); |
| 282 |
END FOR; |
| 283 |
FOR i IN [count + 1..ntrays] CREATE |
| 284 |
w_tray[i] = w_mid + f_int*mult[i]*(w_mid - w_tray[0]); |
| 285 |
END FOR; |
| 286 |
END SELECT; |
| 287 |
|
| 288 |
|
| 289 |
METHODS |
| 290 |
|
| 291 |
METHOD default_self; |
| 292 |
f_mid := 0.5; |
| 293 |
IF (even == FALSE) THEN |
| 294 |
f_count := count; |
| 295 |
f_ntrays := ntrays; |
| 296 |
f_int := 2/(f_ntrays + 1)*(f_count - 1); |
| 297 |
mult[1] := 1; |
| 298 |
FOR i IN [2..count - 1] DO |
| 299 |
mult[i] := (f_count - i)/(f_count - 1); |
| 300 |
END FOR; |
| 301 |
FOR i IN [count + 1..ntrays] DO |
| 302 |
mult[i] := mult[ntrays + 1 - i]; |
| 303 |
END FOR; |
| 304 |
ELSE |
| 305 |
f_count := count; |
| 306 |
f_ntrays := ntrays; |
| 307 |
f_int := 2/(f_ntrays + 1)*(f_count - 1 + 0.5); |
| 308 |
mult[1] := 1; |
| 309 |
FOR i IN [2..count] DO |
| 310 |
mult[i] := 1/(f_count + i - 1); |
| 311 |
END FOR; |
| 312 |
FOR i IN [count + 1..ntrays] DO |
| 313 |
mult[i] := mult[ntrays + 1 - i]; |
| 314 |
END FOR; |
| 315 |
END IF; |
| 316 |
END default_self; |
| 317 |
METHOD default_all; |
| 318 |
RUN default_self; |
| 319 |
END default_all; |
| 320 |
METHOD scale_self; |
| 321 |
f_int.nominal := f_int; |
| 322 |
f_mid.nominal := f_mid; |
| 323 |
FOR i IN [0..npoints] DO |
| 324 |
w_points[i].nominal := abs(w_points[i]) + 0.01; |
| 325 |
|
| 326 |
FOR j IN [0..order] DO |
| 327 |
W[i][j].nominal := abs(W[i][j]) + 0.01; |
| 328 |
END FOR; |
| 329 |
END FOR; |
| 330 |
FOR j IN [0..ntrays+1] DO |
| 331 |
w_tray[j].nominal := abs(w_tray[j]) + 0.01; |
| 332 |
END FOR; |
| 333 |
w_mid.nominal := abs(w_mid) + 0.01; |
| 334 |
END scale_self; |
| 335 |
METHOD scale_all; |
| 336 |
RUN scale_self; |
| 337 |
END scale_all; |
| 338 |
METHOD bound_self; |
| 339 |
(* FOR i IN [0..npoints] DO |
| 340 |
(* w_points[i].lower_bound := -2.0; |
| 341 |
w_points[i].upper_bound := abs(w_points[i]) + |
| 342 |
scale*w_points[i].nominal; |
| 343 |
*) |
| 344 |
FOR j IN [0..order] DO |
| 345 |
(* NEED BETTER BOUNDING HERE |
| 346 |
note that lower bound can go negative for |
| 347 |
some Wij and others will have zero lower bound. |
| 348 |
W[i][j].lower_bound := ??; |
| 349 |
W[i][j].upper_bound := ??; |
| 350 |
*) |
| 351 |
END FOR; |
| 352 |
END FOR; |
| 353 |
(* FOR j IN [0..ntrays+1] DO |
| 354 |
w_tray[j].lower_bound := -2.0; |
| 355 |
w_tray[j].upper_bound := w_tray[j] + |
| 356 |
scale*w_tray[j].nominal; |
| 357 |
END FOR; |
| 358 |
w_mid.lower_bound := -2.0; |
| 359 |
w_mid.upper_bound := w_mid + scale*w_mid.nominal; |
| 360 |
*) |
| 361 |
*) |
| 362 |
END bound_self; |
| 363 |
METHOD bound_all; |
| 364 |
RUN bound_self; |
| 365 |
END bound_all; |
| 366 |
METHOD check_self; |
| 367 |
END check_self; |
| 368 |
METHOD check_all; |
| 369 |
RUN check_self; |
| 370 |
END check_all; |
| 371 |
|
| 372 |
METHOD specify; |
| 373 |
w_points[0..npoints].fixed := TRUE; |
| 374 |
f_int.fixed := TRUE; |
| 375 |
f_mid.fixed := TRUE; |
| 376 |
mult[1..ntrays].fixed := TRUE; |
| 377 |
END specify; |
| 378 |
METHOD reset; |
| 379 |
RUN ClearAll; |
| 380 |
RUN specify; |
| 381 |
END reset; |
| 382 |
|
| 383 |
END lagrange_polynomial; |
| 384 |
|
| 385 |
|
| 386 |
MODEL collpoint( |
| 387 |
z WILL_BE factor; |
| 388 |
s WILL_BE factor; |
| 389 |
up_down WILL_BE real; |
| 390 |
a WILL_BE factor; |
| 391 |
); |
| 392 |
ztop IS_A factor; |
| 393 |
scale IS_A scaling_constant; |
| 394 |
|
| 395 |
s_def: z = 1-exp(-a*s); |
| 396 |
ztopdefn: ztop = 1-(1-z)*exp(-up_down*a); |
| 397 |
|
| 398 |
METHODS |
| 399 |
METHOD default_self; |
| 400 |
ztop := 0.5; |
| 401 |
ztop.upper_bound := 1.0; |
| 402 |
ztop.lower_bound := -0.5; |
| 403 |
END default_self; |
| 404 |
METHOD default_all; |
| 405 |
s := 1.0; |
| 406 |
s.lower_bound := 0.0; |
| 407 |
s.upper_bound := 100.0; |
| 408 |
z := 0.5; |
| 409 |
RUN default_self; |
| 410 |
END default_all; |
| 411 |
METHOD scale_self; |
| 412 |
ztop.nominal := abs(ztop) + 0.01; |
| 413 |
END scale_self; |
| 414 |
METHOD scale_all; |
| 415 |
a.nominal := a + 0.01; |
| 416 |
z.nominal := abs(z) + 0.01; |
| 417 |
s.nominal := s + 0.01; |
| 418 |
RUN scale_self; |
| 419 |
END scale_all; |
| 420 |
METHOD bound_self; |
| 421 |
ztop.lower_bound := 1-(1-z.lower_bound)*exp(-up_down*a); |
| 422 |
ztop.upper_bound := 1-(1-z.upper_bound)*exp(-up_down*a); |
| 423 |
END bound_self; |
| 424 |
METHOD bound_all; |
| 425 |
ztop.nominal := abs(ztop) + 0.01; |
| 426 |
a.lower_bound := 0.0; |
| 427 |
a.upper_bound := 3.0; |
| 428 |
z.lower_bound := 1-exp(-a*s.lower_bound); |
| 429 |
z.upper_bound := 1-exp(-a*s.upper_bound); |
| 430 |
RUN bound_self; |
| 431 |
END bound_all; |
| 432 |
METHOD check_self; |
| 433 |
END check_self; |
| 434 |
METHOD check_all; |
| 435 |
RUN check_self; |
| 436 |
END check_all; |
| 437 |
|
| 438 |
METHOD seqmod; |
| 439 |
a.fixed := TRUE; |
| 440 |
s.fixed := TRUE; |
| 441 |
END seqmod; |
| 442 |
METHOD specify; |
| 443 |
RUN seqmod; |
| 444 |
END specify; |
| 445 |
METHOD reset; |
| 446 |
RUN ClearAll; |
| 447 |
RUN specify; |
| 448 |
END reset; |
| 449 |
METHOD s_off; |
| 450 |
s_def.included := FALSE; |
| 451 |
s.fixed := TRUE; |
| 452 |
END s_off; |
| 453 |
|
| 454 |
END collpoint; |
| 455 |
|
| 456 |
|
| 457 |
MODEL z_set( |
| 458 |
ntrays WILL_BE integer_constant; |
| 459 |
up_down WILL_BE real; |
| 460 |
a WILL_BE factor; |
| 461 |
z_on WILL_BE boolean; |
| 462 |
); |
| 463 |
|
| 464 |
s_values[0..ntrays+1], |
| 465 |
z_values[0..ntrays+1], |
| 466 |
stot IS_A factor; |
| 467 |
|
| 468 |
|
| 469 |
FOR i IN [0..ntrays+1] CREATE |
| 470 |
z[i] IS_A collpoint(z_values[i],s_values[i],up_down,a); |
| 471 |
END FOR; |
| 472 |
|
| 473 |
ztop, |
| 474 |
zbot IS_A factor; |
| 475 |
|
| 476 |
lgr IS_A lagrange_polynomial(ntrays); |
| 477 |
|
| 478 |
scale IS_A scaling_constant; |
| 479 |
|
| 480 |
stot = s_values[ntrays+1] - s_values[0]; |
| 481 |
|
| 482 |
FOR j IN [1..ntrays] CREATE |
| 483 |
lgr.w_points[2*j-1], |
| 484 |
lgr.w_tray[j] ARE_THE_SAME; |
| 485 |
END FOR; |
| 486 |
|
| 487 |
|
| 488 |
(* z_based *) |
| 489 |
FOR j IN [1..ntrays] CREATE |
| 490 |
|
| 491 |
z_based_odd[2*j-1]: lgr.w_points[2*j-1] = |
| 492 |
z_values[j]; |
| 493 |
z_based_even[2*j]: lgr.w_points[2*j] = |
| 494 |
z[j].ztop; |
| 495 |
END FOR; |
| 496 |
|
| 497 |
z_based_0: lgr.w_points[0] = z_values[0]; |
| 498 |
z_based_n: lgr.w_points[lgr.npoints] = |
| 499 |
z_values[ntrays+1]; |
| 500 |
|
| 501 |
|
| 502 |
(* s_based *) |
| 503 |
|
| 504 |
FOR j IN [1..ntrays] CREATE |
| 505 |
|
| 506 |
s_based_odd[2*j-1]: lgr.w_points[2*j-1] = |
| 507 |
s_values[j]; |
| 508 |
s_based_even[2*j]: lgr.w_points[2*j] = |
| 509 |
s_values[j] + z[0].up_down; |
| 510 |
END FOR; |
| 511 |
|
| 512 |
s_based_0: lgr.w_points[0] = s_values[0]; |
| 513 |
s_based_n: lgr.w_points[lgr.npoints] = |
| 514 |
s_values[ntrays+1]; |
| 515 |
|
| 516 |
|
| 517 |
ztop = (up_down+1)*z_values[ntrays+1]/2 +(1-up_down)*z_values[0]/2; |
| 518 |
zbot = (up_down+1)*z_values[0]/2 +(1-up_down)*z_values[ntrays+1]/2; |
| 519 |
|
| 520 |
tray_delta IS_A factor; |
| 521 |
|
| 522 |
s_values[ntrays] + tray_delta = s_values[ntrays+1]; |
| 523 |
|
| 524 |
WHEN(z_on) |
| 525 |
CASE TRUE: |
| 526 |
USE z_based_odd; |
| 527 |
USE z_based_even; |
| 528 |
USE z_based_0; |
| 529 |
USE z_based_n; |
| 530 |
CASE FALSE: |
| 531 |
USE s_based_odd; |
| 532 |
USE s_based_even; |
| 533 |
USE s_based_0; |
| 534 |
USE s_based_n; |
| 535 |
END WHEN; |
| 536 |
|
| 537 |
|
| 538 |
METHODS |
| 539 |
METHOD default_self; |
| 540 |
s_values[0] := 0; |
| 541 |
s_values[1..ntrays+1] := 1.0; |
| 542 |
s_values[0..ntrays+1].lower_bound := 0.0; |
| 543 |
z_values[0] := 0; |
| 544 |
z_values[1..ntrays+1] := 0.5; |
| 545 |
z_values[0..ntrays+1].lower_bound := 0.0; |
| 546 |
z_values[0..ntrays+1].upper_bound := 1.0; |
| 547 |
stot.lower_bound := 1; |
| 548 |
stot.upper_bound := 100; |
| 549 |
|
| 550 |
RUN z[0..ntrays+1].default_self; |
| 551 |
RUN lgr.default_self; |
| 552 |
END default_self; |
| 553 |
METHOD default_all; |
| 554 |
RUN default_self; |
| 555 |
END default_all; |
| 556 |
|
| 557 |
METHOD scale_self; |
| 558 |
RUN z[0..ntrays+1].scale_self; |
| 559 |
RUN lgr.scale_self; |
| 560 |
stot.nominal := stot + 0.01; |
| 561 |
tray_delta.nominal := tray_delta + 0.01; |
| 562 |
ztop.nominal := abs(ztop) + 0.01; |
| 563 |
zbot.nominal := abs(zbot) + 0.01; |
| 564 |
END scale_self; |
| 565 |
METHOD scale_all; |
| 566 |
RUN scale_self; |
| 567 |
END scale_all; |
| 568 |
|
| 569 |
METHOD bound_self; |
| 570 |
s_values[0..ntrays+1].upper_bound := stot.upper_bound; |
| 571 |
RUN z[0..ntrays+1].bound_self; |
| 572 |
|
| 573 |
RUN lgr.bound_self; |
| 574 |
tray_delta.lower_bound := 1e-8; |
| 575 |
tray_delta.upper_bound := tray_delta + |
| 576 |
scale*tray_delta.nominal; |
| 577 |
ztop.lower_bound := -0.5; |
| 578 |
ztop.upper_bound := 1.0; |
| 579 |
zbot.lower_bound := -0.5; |
| 580 |
zbot.upper_bound := 1.0; |
| 581 |
|
| 582 |
IF (z_on) THEN |
| 583 |
FOR j IN [1..ntrays] DO |
| 584 |
lgr.w_points[2*j-1].lower_bound := z_values[j].lower_bound; (* 0 *) |
| 585 |
lgr.w_points[2*j-1].upper_bound := z_values[j].upper_bound; (* 1 *) |
| 586 |
lgr.w_points[2*j].lower_bound := z[j].ztop.lower_bound; |
| 587 |
lgr.w_points[2*j].upper_bound := z[j].ztop.upper_bound; |
| 588 |
END FOR; |
| 589 |
lgr.w_tray[0..ntrays+1].lower_bound := 0; |
| 590 |
lgr.w_tray[0..ntrays+1].upper_bound := 1; |
| 591 |
ELSE |
| 592 |
FOR j IN [1..ntrays] DO |
| 593 |
lgr.w_points[2*j-1].lower_bound := 0; |
| 594 |
lgr.w_points[2*j-1].upper_bound := stot.upper_bound; |
| 595 |
lgr.w_points[2*j].lower_bound := 0 + z[0].up_down; |
| 596 |
lgr.w_points[2*j].upper_bound := stot.upper_bound + z[0].up_down; |
| 597 |
END FOR; |
| 598 |
lgr.w_tray[0..ntrays+1].lower_bound := 0; |
| 599 |
lgr.w_tray[0..ntrays+1].upper_bound := stot.upper_bound; |
| 600 |
END IF; |
| 601 |
|
| 602 |
END bound_self; |
| 603 |
METHOD bound_all; |
| 604 |
RUN bound_self; |
| 605 |
END bound_all; |
| 606 |
METHOD check_self; |
| 607 |
END check_self; |
| 608 |
METHOD check_all; |
| 609 |
RUN check_self; |
| 610 |
END check_all; |
| 611 |
|
| 612 |
METHOD specify; |
| 613 |
RUN lgr.specify; |
| 614 |
lgr.w_points[0..lgr.npoints].fixed := FALSE; |
| 615 |
a.fixed := TRUE; |
| 616 |
s_values[0].fixed := TRUE; |
| 617 |
stot.fixed := TRUE; |
| 618 |
END specify; |
| 619 |
METHOD reset; |
| 620 |
RUN ClearAll; |
| 621 |
RUN specify; |
| 622 |
END reset; |
| 623 |
|
| 624 |
METHOD s_off; |
| 625 |
RUN z[ntrays..ntrays+1].s_off; |
| 626 |
END s_off; |
| 627 |
|
| 628 |
END z_set; |
| 629 |
|
| 630 |
MODEL coll_material_detailed_stream( |
| 631 |
state WILL_BE thermodynamics; |
| 632 |
) WHERE ( |
| 633 |
state.pd.phase_indicator == 'M'; |
| 634 |
) REFINES detailed_stream; |
| 635 |
|
| 636 |
sum_y: SUM[state.y[i] | i IN components] = 1.0; |
| 637 |
|
| 638 |
(* this is a wrapper that permanently removes equations *) |
| 639 |
false_cond IS_A boolean_constant; |
| 640 |
false_cond :== FALSE; |
| 641 |
WHEN (false_cond) |
| 642 |
CASE TRUE: |
| 643 |
USE state.overall_h; |
| 644 |
USE state.overall_g; |
| 645 |
USE state.overall_v; |
| 646 |
USE state.overall_y; |
| 647 |
USE V_eqn; |
| 648 |
USE state.phase['material'].g_mix; |
| 649 |
USE state.phase['material'].v_mix; |
| 650 |
USE state.phase['material'].h_mix; |
| 651 |
USE state.phase['material'].sum_y; |
| 652 |
USE state.sum_phase_fractions; |
| 653 |
OTHERWISE: |
| 654 |
END WHEN; |
| 655 |
METHODS |
| 656 |
METHOD specify; |
| 657 |
RUN detailed_stream::specify; |
| 658 |
state.H.fixed := TRUE; |
| 659 |
END specify; |
| 660 |
END coll_material_detailed_stream; |
| 661 |
|
| 662 |
MODEL coll_material_stream( |
| 663 |
cd WILL_BE components_data; |
| 664 |
pd WILL_BE phases_data; |
| 665 |
equilibrated WILL_BE boolean; |
| 666 |
) WHERE ( |
| 667 |
pd.phase_indicator == 'M'; |
| 668 |
) REFINES stream; |
| 669 |
|
| 670 |
sum_y: SUM[state.y[i] | i IN components] = 1.0; |
| 671 |
(* this is a wrapper that permanently removes equations *) |
| 672 |
false_cond IS_A boolean_constant; |
| 673 |
false_cond :== FALSE; |
| 674 |
WHEN (false_cond) |
| 675 |
CASE TRUE: |
| 676 |
USE state.overall_h; |
| 677 |
USE state.overall_g; |
| 678 |
USE state.overall_v; |
| 679 |
USE state.overall_y; |
| 680 |
USE Details.V_eqn; |
| 681 |
USE state.phase['material'].g_mix; |
| 682 |
USE state.phase['material'].v_mix; |
| 683 |
USE state.phase['material'].h_mix; |
| 684 |
USE state.phase['material'].sum_y; |
| 685 |
USE state.sum_phase_fractions; |
| 686 |
OTHERWISE: |
| 687 |
END WHEN; |
| 688 |
METHODS |
| 689 |
METHOD specify; |
| 690 |
RUN stream::specify; |
| 691 |
state.H.fixed := TRUE; |
| 692 |
END specify; |
| 693 |
END coll_material_stream; |
| 694 |
|
| 695 |
|
| 696 |
MODEL coll_detailed_tray( |
| 697 |
Qin WILL_BE energy_rate; |
| 698 |
equilibrated WILL_BE boolean; |
| 699 |
liqin WILL_BE detailed_stream; |
| 700 |
vapin WILL_BE detailed_stream; |
| 701 |
liqout WILL_BE detailed_stream; |
| 702 |
vapout WILL_BE detailed_stream; |
| 703 |
state WILL_BE thermodynamics; |
| 704 |
) WHERE ( |
| 705 |
vapin.state.pd.phase_indicator IN ['V','M'] == TRUE; |
| 706 |
vapout.state.pd.phase_indicator == 'V'; |
| 707 |
liqin.state.pd.phase_indicator IN ['L','M'] == TRUE; |
| 708 |
liqout.state.pd.phase_indicator == 'L'; |
| 709 |
state.pd.phase_indicator == 'VL'; |
| 710 |
liqout.state, vapout.state WILL_NOT_BE_THE_SAME; |
| 711 |
state.phase['liquid1'], liqout.state.phase['liquid1'] WILL_BE_THE_SAME; |
| 712 |
state.phase['vapor'], vapout.state.phase['vapor'] WILL_BE_THE_SAME; |
| 713 |
state.cd, liqin.state.cd, liqout.state.cd, |
| 714 |
vapin.state.cd, vapout.state.cd WILL_BE_THE_SAME; |
| 715 |
) REFINES detailed_tray; |
| 716 |
|
| 717 |
METHODS |
| 718 |
METHOD seqmod; |
| 719 |
RUN detailed_tray::seqmod; |
| 720 |
RUN liqin.seqmod; |
| 721 |
RUN vapin.seqmod; |
| 722 |
END seqmod; |
| 723 |
END coll_detailed_tray; |
| 724 |
|
| 725 |
MODEL coll_feed_tray( |
| 726 |
Qin WILL_BE energy_rate; |
| 727 |
equilibrated WILL_BE boolean; |
| 728 |
feed WILL_BE stream; |
| 729 |
liqin WILL_BE stream; |
| 730 |
vapin WILL_BE stream; |
| 731 |
liqout WILL_BE stream; |
| 732 |
vapout WILL_BE stream; |
| 733 |
) WHERE ( |
| 734 |
feed, liqin, vapin, vapout, liqout WILL_NOT_BE_THE_SAME; |
| 735 |
feed.cd, liqin.cd, liqout.cd, vapin.cd, vapout.cd WILL_BE_THE_SAME; |
| 736 |
liqin.pd.phase_indicator IN ['L','M'] == TRUE; |
| 737 |
liqout.pd.phase_indicator == 'L'; |
| 738 |
vapin.pd.phase_indicator IN ['V','M'] == TRUE; |
| 739 |
vapout.pd.phase_indicator == 'V'; |
| 740 |
(feed.pd.phase_indicator IN ['V','L','VL']) == TRUE; |
| 741 |
) REFINES feed_tray; |
| 742 |
METHODS |
| 743 |
METHOD seqmod; |
| 744 |
RUN feed_tray::seqmod; |
| 745 |
RUN liqin.seqmod; |
| 746 |
RUN vapin.seqmod; |
| 747 |
RUN feed.seqmod; |
| 748 |
END seqmod; |
| 749 |
END coll_feed_tray; |
| 750 |
|
| 751 |
MODEL coll_simple_reboiler( |
| 752 |
Qin WILL_BE energy_rate; |
| 753 |
equilibrated WILL_BE boolean; |
| 754 |
liqin WILL_BE stream; |
| 755 |
vapout WILL_BE stream; |
| 756 |
bottoms WILL_BE stream; |
| 757 |
) WHERE ( |
| 758 |
liqin, vapout, bottoms WILL_NOT_BE_THE_SAME; |
| 759 |
liqin.cd, vapout.cd, bottoms.cd WILL_BE_THE_SAME; |
| 760 |
liqin.pd.phase_indicator IN ['L','M'] == TRUE; |
| 761 |
vapout.pd.phase_indicator == 'V'; |
| 762 |
bottoms.pd.phase_indicator == 'L'; |
| 763 |
) REFINES simple_reboiler; |
| 764 |
METHODS |
| 765 |
METHOD seqmod; |
| 766 |
RUN simple_reboiler::seqmod; |
| 767 |
RUN liqin.seqmod; |
| 768 |
END seqmod; |
| 769 |
END coll_simple_reboiler; |
| 770 |
|
| 771 |
MODEL coll( |
| 772 |
ntrays WILL_BE integer_constant; |
| 773 |
topvap WILL_BE stream; |
| 774 |
topliq WILL_BE stream; |
| 775 |
botvap WILL_BE stream; |
| 776 |
botliq WILL_BE stream; |
| 777 |
pdL WILL_BE phases_data; |
| 778 |
pdV WILL_BE phases_data; |
| 779 |
reduce WILL_BE fraction; |
| 780 |
equilibrated WILL_BE boolean; |
| 781 |
up_down WILL_BE real; |
| 782 |
a WILL_BE factor; |
| 783 |
z_on WILL_BE boolean; |
| 784 |
hat_on WILL_BE boolean; |
| 785 |
hb_on WILL_BE boolean; |
| 786 |
) WHERE ( |
| 787 |
ntrays >= 1; |
| 788 |
topvap, topliq, botvap, botliq WILL_NOT_BE_THE_SAME; |
| 789 |
topvap.cd, botvap.cd, botliq.cd, topliq.cd WILL_BE_THE_SAME; |
| 790 |
botliq.pd.phase_indicator IN ['M','L'] == TRUE; |
| 791 |
botvap.pd.phase_indicator IN ['M','V'] == TRUE; |
| 792 |
topliq.pd.phase_indicator IN ['M','L'] == TRUE; |
| 793 |
topvap.pd.phase_indicator IN ['M','V'] == TRUE; |
| 794 |
) REFINES cmumodel(); |
| 795 |
|
| 796 |
cd ALIASES topliq.state.cd; |
| 797 |
vap_option ALIASES pdV.vapor_option; |
| 798 |
liq_option ALIASES pdL.liquid1_option; |
| 799 |
pdVL IS_A phases_data('VL', vap_option, liq_option, 'none'); |
| 800 |
pdM IS_A phases_data('M', 'none', 'none', 'none'); |
| 801 |
mat_option ALIASES pdM.liquid1_option; (* none *) |
| 802 |
|
| 803 |
|
| 804 |
FOR i IN [1..ntrays] CREATE |
| 805 |
liqin_mix[i] IS_A select_mixture_type(cd, mat_option); |
| 806 |
liqout_mix[i] IS_A select_mixture_type(cd, liq_option); |
| 807 |
vapin_mix[i] IS_A select_mixture_type(cd, mat_option); |
| 808 |
vapout_mix[i] IS_A select_mixture_type(cd, vap_option); |
| 809 |
END FOR; |
| 810 |
|
| 811 |
FOR i IN [1..ntrays] CREATE |
| 812 |
liqin_phase[i]['material'] ALIASES liqin_mix[i].phase; |
| 813 |
liqout_phase[i]['liquid1'] ALIASES liqout_mix[i].phase; |
| 814 |
vapin_phase[i]['material'] ALIASES vapin_mix[i].phase; |
| 815 |
vapout_phase[i]['vapor'] ALIASES vapout_mix[i].phase; |
| 816 |
END FOR; |
| 817 |
|
| 818 |
FOR i IN [1..ntrays] CREATE |
| 819 |
liqin_state[i] IS_A thermodynamics( |
| 820 |
cd, |
| 821 |
pdM, |
| 822 |
liqin_phase[i], |
| 823 |
equilibrated |
| 824 |
); |
| 825 |
liqout_state[i] IS_A thermodynamics( |
| 826 |
cd, |
| 827 |
pdL, |
| 828 |
liqout_phase[i], |
| 829 |
equilibrated |
| 830 |
); |
| 831 |
vapin_state[i] IS_A thermodynamics( |
| 832 |
cd, |
| 833 |
pdM, |
| 834 |
vapin_phase[i], |
| 835 |
equilibrated |
| 836 |
); |
| 837 |
vapout_state[i] IS_A thermodynamics( |
| 838 |
cd, |
| 839 |
pdV, |
| 840 |
vapout_phase[i], |
| 841 |
equilibrated |
| 842 |
); |
| 843 |
END FOR; |
| 844 |
FOR i IN [1..ntrays] CREATE |
| 845 |
liqin[i] IS_A coll_material_detailed_stream(liqin_state[i]); |
| 846 |
liqout[i] IS_A detailed_stream(liqout_state[i]); |
| 847 |
vapin[i] IS_A coll_material_detailed_stream(vapin_state[i]); |
| 848 |
vapout[i] IS_A detailed_stream(vapout_state[i]); |
| 849 |
END FOR; |
| 850 |
|
| 851 |
FOR i IN [1..ntrays] CREATE |
| 852 |
trayVL[i][VLphases[i]] ALIASES |
| 853 |
(vapout_mix[i].phase,liqout_mix[i].phase) |
| 854 |
WHERE VLphases[i] IS_A set OF symbol_constant |
| 855 |
WITH_VALUE ('vapor','liquid1'); |
| 856 |
END FOR; |
| 857 |
|
| 858 |
FOR i IN [1..ntrays] CREATE |
| 859 |
tray_state[i] IS_A thermodynamics( |
| 860 |
cd, |
| 861 |
pdVL, |
| 862 |
trayVL[i], |
| 863 |
equilibrated |
| 864 |
); |
| 865 |
END FOR; |
| 866 |
|
| 867 |
Qin_tray[1..ntrays] IS_A energy_rate; |
| 868 |
|
| 869 |
FOR i IN [1..ntrays] CREATE |
| 870 |
tray[i] IS_A coll_detailed_tray( |
| 871 |
Qin_tray[i], |
| 872 |
equilibrated, |
| 873 |
liqin[i], |
| 874 |
vapin[i], |
| 875 |
liqout[i], |
| 876 |
vapout[i], |
| 877 |
tray_state[i] |
| 878 |
); |
| 879 |
END FOR; |
| 880 |
|
| 881 |
components ALIASES cd.components; |
| 882 |
inactive_component ALIASES cd.reference; |
| 883 |
|
| 884 |
x_order, |
| 885 |
y_order IS_A integer_constant; |
| 886 |
|
| 887 |
x_coeff[components |
| 888 |
- [inactive_component]] |
| 889 |
[0..x_order], |
| 890 |
y_coeff[components |
| 891 |
- [inactive_component]] |
| 892 |
[0..y_order], |
| 893 |
cmo[1..ntrays], |
| 894 |
cmotot IS_A factor; |
| 895 |
|
| 896 |
z_set IS_A z_set(ntrays,up_down,a,z_on); |
| 897 |
x[1..ntrays][components] IS_A fraction; |
| 898 |
y[1..ntrays][components] IS_A fraction; |
| 899 |
x_hat[1..ntrays][components] IS_A factor; |
| 900 |
scale IS_A scaling_constant; |
| 901 |
|
| 902 |
|
| 903 |
FOR i IN components CREATE |
| 904 |
FOR j IN [1..ntrays] CREATE |
| 905 |
x[j][i] = (1+z_set.up_down) |
| 906 |
*tray[ntrays+1-j].liqout.state.y[i]/2 |
| 907 |
+ (1-z_set.up_down) |
| 908 |
*tray[j].liqout.state.y[i]/2; |
| 909 |
y[j][i] = (1+z_set.up_down) |
| 910 |
*tray[ntrays+1-j].vapin.state.y[i]/2 |
| 911 |
+ (1-z_set.up_down) |
| 912 |
*tray[j].vapin.state.y[i]/2; |
| 913 |
x_hat[j][i] = (1+z_set.up_down) |
| 914 |
*tray_x_hat['out'][i][ntrays+1-j]/2 |
| 915 |
+ (1-z_set.up_down) |
| 916 |
*tray_x_hat['out'][i][j]/2; |
| 917 |
END FOR; |
| 918 |
END FOR; |
| 919 |
|
| 920 |
x_order :== ntrays; |
| 921 |
y_order :== ntrays; |
| 922 |
|
| 923 |
|
| 924 |
(* constant molar overflow model - instead of heat balance *) |
| 925 |
|
| 926 |
FOR j IN [1..ntrays] CREATE |
| 927 |
cmo[j]*tray[j].liqin.flow = botliq.flow; |
| 928 |
END FOR; |
| 929 |
|
| 930 |
cmotot*topliq.flow = botliq.flow; |
| 931 |
|
| 932 |
FOR i IN components CREATE |
| 933 |
overall_MB[i]: topliq.f[i] - topvap.f[i] = |
| 934 |
botliq.f[i] - botvap.f[i]; |
| 935 |
END FOR; |
| 936 |
|
| 937 |
(* xtrans stuff *) |
| 938 |
|
| 939 |
tray_x_hat['in','out'][components][1..ntrays], |
| 940 |
tray_y_hat['in','out'][components][1..ntrays], |
| 941 |
end_x_hat['top','bot'][components], |
| 942 |
end_y_hat['top','bot'][components] IS_A factor; |
| 943 |
td IS_A real; |
| 944 |
|
| 945 |
|
| 946 |
FOR i IN components CREATE |
| 947 |
tanh_botliq[i]: (1.0)*(2.0*botliq.state.y[i] - 1.0) |
| 948 |
= tanh(end_x_hat['bot'][i]*td); |
| 949 |
tanh_topliq[i]: (1.0)*(2.0*topliq.state.y[i] - 1.0) |
| 950 |
= tanh(end_x_hat['top'][i]*td); |
| 951 |
tanh_botvap[i]: (1.0)*(2.0*botvap.state.y[i] - 1.0) |
| 952 |
= tanh(end_y_hat['bot'][i]*td); |
| 953 |
tanh_topvap[i]: (1.0)*(2.0*topvap.state.y[i] - 1.0) |
| 954 |
= tanh(end_y_hat['top'][i]*td); |
| 955 |
|
| 956 |
END FOR; |
| 957 |
|
| 958 |
FOR i IN components CREATE |
| 959 |
|
| 960 |
FOR j IN [1..ntrays] CREATE |
| 961 |
|
| 962 |
tanh_liqout[i][j]: (1.0)*(2.0*tray[j].liqout.state.y[i] - 1.0) |
| 963 |
= tanh(tray_x_hat['out'][i][j]*td); |
| 964 |
tanh_liqin[i][j]: (1.0)*(2.0*tray[j].liqin.state.y[i] - 1.0) |
| 965 |
= tanh(tray_x_hat['in'][i][j]*td); |
| 966 |
tanh_vapout[i][j]: (1.0)*(2.0*tray[j].vapout.state.y[i] - 1.0) |
| 967 |
= tanh(tray_y_hat['out'][i][j]*td); |
| 968 |
tanh_vapin[i][j]: (1.0)*(2.0*tray[j].vapin.state.y[i] - 1.0) |
| 969 |
= tanh(tray_y_hat['in'][i][j]*td); |
| 970 |
END FOR; |
| 971 |
END FOR; |
| 972 |
|
| 973 |
(* polynomial *) |
| 974 |
|
| 975 |
(* Overall material balances *) |
| 976 |
|
| 977 |
FOR j IN [1..ntrays] CREATE |
| 978 |
tot_trayMB[j]: botvap.flow - botliq.flow = |
| 979 |
tray[j].vapout.flow - |
| 980 |
tray[j].liqin.flow; |
| 981 |
|
| 982 |
END FOR; |
| 983 |
|
| 984 |
FOR i IN components - [inactive_component] CREATE |
| 985 |
FOR j IN [1..ntrays] CREATE |
| 986 |
frac_x_in[j][i]: tray[j].liqin.state.y[i] = |
| 987 |
SUM[z_set.lgr.W[2*j][k]*x_coeff[i][k] |
| 988 |
| k IN [0..x_order]]; |
| 989 |
frac_y_in[j][i]: tray[j].vapin.state.y[i] = |
| 990 |
SUM[z_set.lgr.W[2*j-1][k]*y_coeff[i][k] |
| 991 |
| k IN [0..y_order]]; |
| 992 |
frac_x_out[j][i]: tray[j].liqout.state.y[i] = |
| 993 |
SUM[z_set.lgr.W[2*j-1][k]*x_coeff[i][k] |
| 994 |
| k IN [0..x_order]]; |
| 995 |
frac_y_out[j][i]: tray[j].vapout.state.y[i] = |
| 996 |
SUM[z_set.lgr.W[2*j][k]*y_coeff[i][k] |
| 997 |
| k IN [0..y_order]]; |
| 998 |
END FOR; |
| 999 |
END FOR; |
| 1000 |
|
| 1001 |
FOR i IN components - [inactive_component] CREATE |
| 1002 |
FOR j IN [1..ntrays] CREATE |
| 1003 |
|
| 1004 |
trans_x_out[j][i]: tray_x_hat['out'][i][j] = |
| 1005 |
SUM[z_set.lgr.W[2*j-1][k]*x_coeff[i][k] |
| 1006 |
| k IN [0..x_order]]; |
| 1007 |
trans_x_in[j][i]: tray_x_hat['in'][i][j] = |
| 1008 |
SUM[z_set.lgr.W[2*j][k]*x_coeff[i][k] |
| 1009 |
| k IN [0..x_order]]; |
| 1010 |
trans_y_out[j][i]: tray_y_hat['out'][i][j] = |
| 1011 |
SUM[z_set.lgr.W[2*j][k]*y_coeff[i][k] |
| 1012 |
| k IN [0..y_order]]; |
| 1013 |
trans_y_in[j][i]: tray_y_hat['in'][i][j] = |
| 1014 |
SUM[z_set.lgr.W[2*j-1][k]*y_coeff[i][k] |
| 1015 |
| k IN [0..y_order]]; |
| 1016 |
END FOR; |
| 1017 |
END FOR; |
| 1018 |
|
| 1019 |
|
| 1020 |
FOR i IN components - [inactive_component] CREATE |
| 1021 |
frac_x_top[i]: topliq.state.y[i] |
| 1022 |
= SUM[((z_set.up_down+1) |
| 1023 |
*z_set.lgr.W[z_set.lgr.npoints][k]/2 |
| 1024 |
+ (1-z_set.up_down) |
| 1025 |
*z_set.lgr.W[0][k]/2)*x_coeff[i][k] |
| 1026 |
| k IN [0..x_order]]; |
| 1027 |
frac_y_top[i]: topvap.state.y[i] |
| 1028 |
= SUM[((z_set.up_down+1) |
| 1029 |
*z_set.lgr.W[z_set.lgr.npoints][k]/2 |
| 1030 |
+ (1-z_set.up_down) |
| 1031 |
*z_set.lgr.W[0][k]/2)*y_coeff[i][k] |
| 1032 |
| k IN [0..y_order]]; |
| 1033 |
frac_y_bot[i]: botvap.state.y[i] |
| 1034 |
= SUM[((z_set.up_down+1) |
| 1035 |
*z_set.lgr.W[0][k]/2 |
| 1036 |
+ (1-z_set.up_down) |
| 1037 |
*z_set.lgr.W[z_set.lgr.npoints][k]/2) |
| 1038 |
*y_coeff[i][k] |
| 1039 |
| k IN [0..y_order]]; |
| 1040 |
END FOR; |
| 1041 |
|
| 1042 |
FOR i IN components - [inactive_component] CREATE |
| 1043 |
trans_x_top[i]: end_x_hat['top'][i] |
| 1044 |
= SUM[(((z_set.up_down+1)*z_set.lgr.W[z_set.lgr.npoints][k]/2 |
| 1045 |
+ (1-z_set.up_down)*z_set.lgr.W[0][k]/2))*x_coeff[i][k] |
| 1046 |
| k IN [0..x_order]]; |
| 1047 |
trans_y_top[i]: end_y_hat['top'][i] |
| 1048 |
= SUM[(((z_set.up_down+1)*z_set.lgr.W[z_set.lgr.npoints][k]/2 |
| 1049 |
+ (1-z_set.up_down)*z_set.lgr.W[0][k]/2))*y_coeff[i][k] |
| 1050 |
| k IN [0..y_order]]; |
| 1051 |
trans_y_bot[i]: end_y_hat['bot'][i] |
| 1052 |
= SUM[((z_set.up_down+1)*z_set.lgr.W[0][k]/2 |
| 1053 |
+ (1-z_set.up_down) |
| 1054 |
*z_set.lgr.W[z_set.lgr.npoints][k]/2)*y_coeff[i][k] |
| 1055 |
| k IN [0..y_order]]; |
| 1056 |
END FOR; |
| 1057 |
|
| 1058 |
|
| 1059 |
slope[components] IS_A factor; |
| 1060 |
|
| 1061 |
FOR i IN components CREATE |
| 1062 |
slope[i]*z_set.stot = abs(topliq.state.y[i] - botliq.state.y[i]); |
| 1063 |
END FOR; |
| 1064 |
|
| 1065 |
|
| 1066 |
aslope[components] IS_A factor; |
| 1067 |
intercept[components] IS_A fraction; |
| 1068 |
slope_slack[1..ntrays][components] IS_A factor; |
| 1069 |
|
| 1070 |
|
| 1071 |
|
| 1072 |
|
| 1073 |
FOR i IN components CREATE |
| 1074 |
botpoint[i]: botliq.state.y[i] = aslope[i]*z_set.zbot + |
| 1075 |
intercept[i]; |
| 1076 |
toppoint[i]: topliq.state.y[i] = aslope[i]*z_set.ztop + |
| 1077 |
intercept[i]; |
| 1078 |
FOR j IN [1..ntrays] CREATE |
| 1079 |
midpoint[j][i]: tray[j].liqout.state.y[i] = |
| 1080 |
aslope[i]*(z_set.z_values[j] - z_set.zbot) + |
| 1081 |
intercept[i] + slope_slack[j][i]; |
| 1082 |
END FOR; |
| 1083 |
END FOR; |
| 1084 |
|
| 1085 |
WHEN(hat_on) |
| 1086 |
CASE TRUE: |
| 1087 |
USE trans_x_out; |
| 1088 |
USE trans_x_in; |
| 1089 |
USE trans_y_out; |
| 1090 |
USE trans_y_in; |
| 1091 |
USE trans_x_top; |
| 1092 |
USE trans_y_top; |
| 1093 |
USE trans_y_bot; |
| 1094 |
CASE FALSE: |
| 1095 |
USE frac_x_in; |
| 1096 |
USE frac_y_in; |
| 1097 |
USE frac_x_out; |
| 1098 |
USE frac_y_out; |
| 1099 |
USE frac_x_top; |
| 1100 |
USE frac_y_top; |
| 1101 |
USE frac_y_bot; |
| 1102 |
END WHEN; |
| 1103 |
|
| 1104 |
(* ENTHALPY / HEAT-BALANCE SECTION *) |
| 1105 |
h_order ALIASES ntrays; |
| 1106 |
h_coeff['liquid','vapor'][0..h_order] IS_A molar_energy; |
| 1107 |
Qtot, |
| 1108 |
Qin[1..ntrays] IS_A energy_rate; |
| 1109 |
|
| 1110 |
Overall_HB: Qtot + topliq.H_flow + botvap.H_flow = |
| 1111 |
botliq.H_flow + topvap.H_flow; |
| 1112 |
|
| 1113 |
FOR j IN [1..ntrays] CREATE |
| 1114 |
tot_trayHB[j]: Qin[j] +topliq.H_flow - topvap.H_flow = |
| 1115 |
tray[j].liqout.H_flow - |
| 1116 |
tray[j].vapin.H_flow; |
| 1117 |
END FOR; |
| 1118 |
|
| 1119 |
(* end points *) |
| 1120 |
|
| 1121 |
h_end_topliq: topliq.state.H = SUM[((z_set.up_down+1) |
| 1122 |
*z_set.lgr.W[z_set.lgr.npoints][k]/2 |
| 1123 |
+ (1-z_set.up_down)*z_set.lgr.W[0][k]/2) |
| 1124 |
*h_coeff['liquid'][k] |
| 1125 |
| k IN [0..h_order]]; |
| 1126 |
h_end_topvap: topvap.state.H = SUM[((z_set.up_down+1) |
| 1127 |
*z_set.lgr.W[z_set.lgr.npoints][k]/2 |
| 1128 |
+ (1-z_set.up_down)*z_set.lgr.W[0][k]/2) |
| 1129 |
*h_coeff['vapor'][k] |
| 1130 |
| k IN [0..h_order]]; |
| 1131 |
h_end_botliq: botliq.state.H = SUM[((z_set.up_down+1) |
| 1132 |
*z_set.lgr.W[0][k]/2 |
| 1133 |
+ (1-z_set.up_down) |
| 1134 |
*z_set.lgr.W[z_set.lgr.npoints][k]/2) |
| 1135 |
*h_coeff['liquid'][k] |
| 1136 |
| k IN [0..h_order]]; |
| 1137 |
h_end_botvap: botvap.state.H = SUM[((z_set.up_down+1) |
| 1138 |
*z_set.lgr.W[0][k]/2 |
| 1139 |
+ (1-z_set.up_down) |
| 1140 |
*z_set.lgr.W[z_set.lgr.npoints][k]/2) |
| 1141 |
*h_coeff['vapor'][k] |
| 1142 |
| k IN [0..h_order]]; |
| 1143 |
(* interior points *) |
| 1144 |
FOR j IN [1..ntrays] CREATE |
| 1145 |
|
| 1146 |
h_int_liqout[j]: tray[j].liqout.state.H = |
| 1147 |
SUM[z_set.lgr.W[2*j-1][k]*h_coeff['liquid'][k] |
| 1148 |
| k IN [0..h_order]]; |
| 1149 |
h_int_liqin[j]: tray[j].liqin.state.H = |
| 1150 |
SUM[z_set.lgr.W[2*j][k]*h_coeff['liquid'][k] |
| 1151 |
| k IN [0..h_order]]; |
| 1152 |
h_int_vapout[j]: tray[j].vapout.state.H = |
| 1153 |
SUM[z_set.lgr.W[2*j][k]*h_coeff['vapor'][k] |
| 1154 |
| k IN [0..h_order]]; |
| 1155 |
h_int_vapin[j]: tray[j].vapin.state.H = |
| 1156 |
SUM[z_set.lgr.W[2*j-1][k]*h_coeff['vapor'][k] |
| 1157 |
| k IN [0..h_order]]; |
| 1158 |
END FOR; |
| 1159 |
|
| 1160 |
use_H_eqns IS_A boolean; |
| 1161 |
WHEN(use_H_eqns) |
| 1162 |
CASE TRUE: |
| 1163 |
USE Overall_HB; |
| 1164 |
USE tot_trayHB; |
| 1165 |
USE h_end_topliq; |
| 1166 |
USE h_end_topvap; |
| 1167 |
USE h_end_botliq; |
| 1168 |
USE h_end_botvap; |
| 1169 |
USE h_int_liqout; |
| 1170 |
USE h_int_liqin; |
| 1171 |
USE h_int_vapout; |
| 1172 |
USE h_int_vapin; |
| 1173 |
OTHERWISE: |
| 1174 |
END WHEN; |
| 1175 |
|
| 1176 |
|
| 1177 |
|
| 1178 |
(* Plotting Section *) |
| 1179 |
z_shift IS_A factor; |
| 1180 |
s_shift IS_A factor; |
| 1181 |
|
| 1182 |
n_plt_points IS_A set OF integer_constant; |
| 1183 |
n_plt_points :== [0..ntrays+1]; |
| 1184 |
z_tray_loc[0..ntrays+1] IS_A factor; |
| 1185 |
s_tray_loc[0..ntrays+1] IS_A factor; |
| 1186 |
x_plot[components][0..ntrays+1] IS_A fraction; |
| 1187 |
y_plot[components][0..ntrays+1] IS_A fraction; |
| 1188 |
|
| 1189 |
z_tray_0: z_tray_loc[0] = z_set.z_values[0] + z_shift; |
| 1190 |
z_tray_end: z_tray_loc[ntrays+1] = z_set.z_values[ntrays+1] + z_shift; |
| 1191 |
s_tray_0: s_tray_loc[0] = z_set.s_values[0] + s_shift; |
| 1192 |
s_tray_end: s_tray_loc[ntrays+1] = z_set.s_values[ntrays+1] + s_shift; |
| 1193 |
FOR i IN [1..ntrays] CREATE |
| 1194 |
z_tray[i]: z_tray_loc[i] = |
| 1195 |
(1+up_down)*(z_set.z_values[ntrays+1] |
| 1196 |
- z_set.z_values[ntrays+1-i])*0.5 |
| 1197 |
+ (1-up_down)*z_set.z_values[i]*0.5 + z_shift; |
| 1198 |
|
| 1199 |
s_tray[i]: s_tray_loc[i] = |
| 1200 |
(1+up_down)*(z_set.s_values[ntrays+1] |
| 1201 |
- z_set.s_values[ntrays+1-i])*0.5 |
| 1202 |
+ (1-up_down)*z_set.s_values[i]*0.5 + s_shift; |
| 1203 |
END FOR; |
| 1204 |
|
| 1205 |
FOR i IN components CREATE |
| 1206 |
x_plot[i][0] = topliq.state.y[i]; |
| 1207 |
y_plot[i][0] = topvap.state.y[i]; |
| 1208 |
FOR j IN [1..ntrays] CREATE |
| 1209 |
x_plot[i][j] = |
| 1210 |
(1 - up_down)*tray[j].liqout.state.y[i]/2 + |
| 1211 |
(1 + up_down)*tray[ntrays - j + 1].liqout.state.y[i]/2; |
| 1212 |
|
| 1213 |
y_plot[i][j] = |
| 1214 |
(1 - up_down)*tray[j].vapout.state.y[i]/2 + |
| 1215 |
(1 + up_down)*tray[ntrays - j + 1].vapout.state.y[i]/2; |
| 1216 |
END FOR; |
| 1217 |
x_plot[i][ntrays+1] = botliq.state.y[i]; |
| 1218 |
y_plot[i][ntrays+1] = botvap.state.y[i]; |
| 1219 |
|
| 1220 |
x_z_curves[i] IS_A plt_curve(n_plt_points,x_plot[i],z_tray_loc); |
| 1221 |
x_s_curves[i] IS_A plt_curve(n_plt_points,x_plot[i],s_tray_loc); |
| 1222 |
y_z_curves[i] IS_A plt_curve(n_plt_points,y_plot[i],z_tray_loc); |
| 1223 |
y_s_curves[i] IS_A plt_curve(n_plt_points,y_plot[i],s_tray_loc); |
| 1224 |
END FOR; |
| 1225 |
|
| 1226 |
Plot_xz IS_A plt_plot_symbol(components,x_z_curves); |
| 1227 |
Plot_xs IS_A plt_plot_symbol(components,x_s_curves); |
| 1228 |
Plot_yz IS_A plt_plot_symbol(components,y_z_curves); |
| 1229 |
Plot_ys IS_A plt_plot_symbol(components,y_s_curves); |
| 1230 |
|
| 1231 |
METHODS |
| 1232 |
METHOD default_self; |
| 1233 |
y_coeff[components - [inactive_component]][0..y_order] := 0.5; |
| 1234 |
x_coeff[components - [inactive_component]][0..x_order] := 0.5; |
| 1235 |
td := 1.0; |
| 1236 |
|
| 1237 |
tray_x_hat['in','out'][components][1..ntrays].nominal := 20; |
| 1238 |
tray_y_hat['in','out'][components][1..ntrays].nominal := 20; |
| 1239 |
end_x_hat['top','bot'][components].nominal := 20; |
| 1240 |
end_y_hat['top','bot'][components].nominal := 20; |
| 1241 |
|
| 1242 |
tray_x_hat['in','out'][components][1..ntrays] := 1; |
| 1243 |
tray_y_hat['in','out'][components][1..ntrays] := 1; |
| 1244 |
end_x_hat['top','bot'][components] := 1; |
| 1245 |
end_y_hat['top','bot'][components] := 1; |
| 1246 |
|
| 1247 |
RUN liqin_mix[1..ntrays].default_self; |
| 1248 |
RUN liqout_mix[1..ntrays].default_self; |
| 1249 |
RUN vapin_mix[1..ntrays].default_self; |
| 1250 |
RUN vapout_mix[1..ntrays].default_self; |
| 1251 |
|
| 1252 |
RUN liqin_state[1..ntrays].default_self; |
| 1253 |
RUN liqout_state[1..ntrays].default_self; |
| 1254 |
RUN vapin_state[1..ntrays].default_self; |
| 1255 |
RUN vapout_state[1..ntrays].default_self; |
| 1256 |
RUN tray_state[1..ntrays].default_self; |
| 1257 |
|
| 1258 |
RUN liqin[1..ntrays].default_self; |
| 1259 |
RUN liqout[1..ntrays].default_self; |
| 1260 |
RUN vapin[1..ntrays].default_self; |
| 1261 |
RUN vapout[1..ntrays].default_self; |
| 1262 |
RUN tray[1..ntrays].default_self; |
| 1263 |
|
| 1264 |
RUN z_set.default_self; |
| 1265 |
|
| 1266 |
z_shift := 0.0; |
| 1267 |
s_shift := 0.0; |
| 1268 |
|
| 1269 |
Plot_xz.title := 'Liquid Compositions vs. z'; |
| 1270 |
Plot_xz.YLabel := 'Liquid Compositions'; |
| 1271 |
Plot_xz.XLabel := 'transformed stage location (z)'; |
| 1272 |
Plot_xz.Ylow := 0; |
| 1273 |
Plot_xz.Yhigh := 1; |
| 1274 |
|
| 1275 |
Plot_xs.title := 'Liquid Compositions vs. s'; |
| 1276 |
Plot_xs.YLabel := 'Liquid Compositions'; |
| 1277 |
Plot_xs.XLabel := 'stage location (s)'; |
| 1278 |
Plot_xs.Ylow := 0; |
| 1279 |
Plot_xs.Yhigh := 1; |
| 1280 |
|
| 1281 |
Plot_yz.title := 'Vapor Compositions vs. z'; |
| 1282 |
Plot_yz.YLabel := 'Vapor Compositions'; |
| 1283 |
Plot_yz.XLabel := 'transformed stage location (z)'; |
| 1284 |
Plot_yz.Ylow := 0; |
| 1285 |
Plot_yz.Yhigh := 1; |
| 1286 |
|
| 1287 |
Plot_ys.title := 'Vapor Compositions vs. s'; |
| 1288 |
Plot_ys.YLabel := 'Vapor Compositions'; |
| 1289 |
Plot_ys.XLabel := 'stage location (s)'; |
| 1290 |
Plot_ys.Ylow := 0; |
| 1291 |
Plot_ys.Yhigh := 1; |
| 1292 |
|
| 1293 |
FOR i IN components DO |
| 1294 |
Plot_xz.curve[i].legend := i; |
| 1295 |
Plot_xs.curve[i].legend := i; |
| 1296 |
Plot_yz.curve[i].legend := i; |
| 1297 |
Plot_ys.curve[i].legend := i; |
| 1298 |
END FOR; |
| 1299 |
|
| 1300 |
END default_self; |
| 1301 |
METHOD default_all; |
| 1302 |
RUN default_self; |
| 1303 |
z_on := FALSE; |
| 1304 |
hat_on := FALSE; |
| 1305 |
|
| 1306 |
RUN topliq[1..ntrays].default_all; |
| 1307 |
RUN botliq[1..ntrays].default_all; |
| 1308 |
RUN topvap[1..ntrays].default_all; |
| 1309 |
RUN botvap[1..ntrays].default_all; |
| 1310 |
|
| 1311 |
END default_all; |
| 1312 |
|
| 1313 |
METHOD values; |
| 1314 |
|
| 1315 |
END values; |
| 1316 |
|
| 1317 |
METHOD seqmod_massbal; |
| 1318 |
hb_on := FALSE; |
| 1319 |
equilibrated := FALSE; |
| 1320 |
use_H_eqns := hb_on OR equilibrated; |
| 1321 |
|
| 1322 |
cmo[1..ntrays].fixed := TRUE; |
| 1323 |
cmotot.fixed := TRUE; |
| 1324 |
|
| 1325 |
RUN tray[1..ntrays].seqmod_massbal; |
| 1326 |
RUN z_set.specify; |
| 1327 |
|
| 1328 |
RUN topliq.seqmod; |
| 1329 |
RUN botvap.seqmod; |
| 1330 |
RUN topvap.seqmod; |
| 1331 |
RUN botliq.seqmod; |
| 1332 |
|
| 1333 |
RUN CMO; |
| 1334 |
|
| 1335 |
topvap.state.H.fixed := TRUE; |
| 1336 |
botliq.state.H.fixed := TRUE; |
| 1337 |
|
| 1338 |
liqin_state[1..ntrays].H.fixed := TRUE; |
| 1339 |
tray[1..ntrays].Qin.fixed := TRUE; |
| 1340 |
s_shift.fixed := FALSE; |
| 1341 |
z_shift.fixed := FALSE; |
| 1342 |
END seqmod_massbal; |
| 1343 |
|
| 1344 |
METHOD seqmod_fullthermo; |
| 1345 |
hb_on := FALSE; |
| 1346 |
equilibrated := TRUE; |
| 1347 |
use_H_eqns := hb_on OR equilibrated; |
| 1348 |
|
| 1349 |
cmo[1..ntrays].fixed := TRUE; |
| 1350 |
cmotot.fixed := TRUE; |
| 1351 |
RUN tray[1..ntrays].seqmod_fullthermo; |
| 1352 |
RUN z_set.specify; |
| 1353 |
|
| 1354 |
RUN topliq.seqmod; |
| 1355 |
RUN botvap.seqmod; |
| 1356 |
RUN topvap.seqmod; |
| 1357 |
RUN botliq.seqmod; |
| 1358 |
|
| 1359 |
RUN CMO; |
| 1360 |
|
| 1361 |
topliq.state.T.fixed := FALSE; |
| 1362 |
botvap.state.T.fixed := FALSE; |
| 1363 |
topvap.state.T.fixed := FALSE; |
| 1364 |
botliq.state.T.fixed := FALSE; |
| 1365 |
|
| 1366 |
|
| 1367 |
topliq.state.H.fixed := FALSE; |
| 1368 |
botvap.state.H.fixed := FALSE; |
| 1369 |
topvap.state.H.fixed := FALSE; |
| 1370 |
botliq.state.H.fixed := FALSE; |
| 1371 |
|
| 1372 |
s_shift.fixed := FALSE; |
| 1373 |
z_shift.fixed := FALSE; |
| 1374 |
END seqmod_fullthermo; |
| 1375 |
|
| 1376 |
METHOD seqmod_adiabatic; |
| 1377 |
hb_on := TRUE; |
| 1378 |
equilibrated := TRUE; |
| 1379 |
use_H_eqns := hb_on OR equilibrated; |
| 1380 |
RUN seqmod_fullthermo; |
| 1381 |
RUN heat_balance; |
| 1382 |
s_shift.fixed := FALSE; |
| 1383 |
z_shift.fixed := FALSE; |
| 1384 |
END seqmod_adiabatic; |
| 1385 |
|
| 1386 |
METHOD heat_balance; |
| 1387 |
hb_on := TRUE; |
| 1388 |
RUN tray[1..ntrays].heat_balance; |
| 1389 |
Qtot.fixed := TRUE; |
| 1390 |
cmotot.fixed := FALSE; |
| 1391 |
Qin[1..ntrays].fixed := TRUE; |
| 1392 |
cmo[1..ntrays].fixed := FALSE; |
| 1393 |
END heat_balance; |
| 1394 |
METHOD CMO; |
| 1395 |
hb_on := FALSE; |
| 1396 |
tray[1..ntrays].cmo_ratio.fixed := TRUE; |
| 1397 |
tray[1..ntrays].Qin.fixed := FALSE; |
| 1398 |
Qtot.fixed := FALSE; |
| 1399 |
cmotot.fixed := TRUE; |
| 1400 |
Qin[1..ntrays].fixed := FALSE; |
| 1401 |
cmo[1..ntrays].fixed := TRUE; |
| 1402 |
END CMO; |
| 1403 |
METHOD specify; |
| 1404 |
IF (hb_on AND NOT(equilibrated)) THEN |
| 1405 |
equilibrated := TRUE; |
| 1406 |
END IF; |
| 1407 |
IF (hb_on AND equilibrated) THEN |
| 1408 |
RUN seqmod_adiabatic; |
| 1409 |
END IF; |
| 1410 |
IF (NOT(hb_on) AND equilibrated) THEN |
| 1411 |
RUN seqmod_fullthermo; |
| 1412 |
END IF; |
| 1413 |
IF (NOT(hb_on) AND NOT(equilibrated)) THEN |
| 1414 |
RUN seqmod_massbal; |
| 1415 |
END IF; |
| 1416 |
|
| 1417 |
RUN topliq.specify; |
| 1418 |
RUN botvap.specify; |
| 1419 |
s_shift.fixed := TRUE; |
| 1420 |
z_shift.fixed := TRUE; |
| 1421 |
END specify; |
| 1422 |
METHOD reset; |
| 1423 |
RUN ClearAll; |
| 1424 |
RUN specify; |
| 1425 |
END reset; |
| 1426 |
|
| 1427 |
METHOD reset_to_massbal; |
| 1428 |
hb_on := FALSE; |
| 1429 |
equilibrated := FALSE; |
| 1430 |
RUN reset; |
| 1431 |
END reset_to_massbal; |
| 1432 |
|
| 1433 |
METHOD reset_to_fullthermo; |
| 1434 |
hb_on := FALSE; |
| 1435 |
equilibrated := TRUE; |
| 1436 |
RUN reset; |
| 1437 |
END reset_to_fullthermo; |
| 1438 |
|
| 1439 |
METHOD reset_to_adiabatic; |
| 1440 |
hb_on := TRUE; |
| 1441 |
equilibrated := TRUE; |
| 1442 |
RUN reset; |
| 1443 |
END reset_to_adiabatic; |
| 1444 |
|
| 1445 |
METHOD zero_Q; |
| 1446 |
reduce := 0; |
| 1447 |
RUN reduce_Q; |
| 1448 |
END zero_Q; |
| 1449 |
|
| 1450 |
METHOD reduce_Q; |
| 1451 |
Qtot := reduce * Qtot; |
| 1452 |
FOR i IN [1..ntrays] DO |
| 1453 |
tray[i].Qin := reduce * tray[i].Qin; |
| 1454 |
Qin[i] := reduce * Qin[i]; |
| 1455 |
END FOR; |
| 1456 |
END reduce_Q; |
| 1457 |
|
| 1458 |
METHOD scale_self; |
| 1459 |
RUN tray[1..ntrays].scale_self; |
| 1460 |
RUN z_set.scale_self; |
| 1461 |
|
| 1462 |
RUN liqin_mix[1..ntrays].scale_self; |
| 1463 |
RUN liqout_mix[1..ntrays].scale_self; |
| 1464 |
RUN vapin_mix[1..ntrays].scale_self; |
| 1465 |
RUN vapout_mix[1..ntrays].scale_self; |
| 1466 |
|
| 1467 |
RUN liqin_state[1..ntrays].scale_self; |
| 1468 |
RUN liqout_state[1..ntrays].scale_self; |
| 1469 |
RUN vapin_state[1..ntrays].scale_self; |
| 1470 |
RUN vapout_state[1..ntrays].scale_self; |
| 1471 |
RUN tray_state[1..ntrays].scale_self; |
| 1472 |
|
| 1473 |
RUN liqin[1..ntrays].scale_self; |
| 1474 |
RUN liqout[1..ntrays].scale_self; |
| 1475 |
RUN vapin[1..ntrays].scale_self; |
| 1476 |
RUN vapout[1..ntrays].scale_self; |
| 1477 |
|
| 1478 |
FOR i IN components - [inactive_component] DO |
| 1479 |
FOR j IN [0..x_order] DO |
| 1480 |
x_coeff[i][j].nominal := |
| 1481 |
abs(x_coeff[i][j]) + 0.00001; |
| 1482 |
END FOR; |
| 1483 |
FOR j IN [0..y_order] DO |
| 1484 |
y_coeff[i][j].nominal := |
| 1485 |
abs(y_coeff[i][j]) + 0.00001; |
| 1486 |
END FOR; |
| 1487 |
END FOR; |
| 1488 |
FOR j IN [1..ntrays] DO |
| 1489 |
cmo[j].nominal := cmo[j]; |
| 1490 |
END FOR; |
| 1491 |
cmotot.nominal := cmotot; |
| 1492 |
FOR i IN components DO |
| 1493 |
FOR j IN [1..ntrays] DO |
| 1494 |
x[j][i].nominal := x[j][i]; |
| 1495 |
y[j][i].nominal := y[j][i]; |
| 1496 |
x_hat[j][i].nominal := abs(x_hat[j][i]); |
| 1497 |
|
| 1498 |
FOR k IN ['in','out'] DO |
| 1499 |
tray_x_hat[k][i][j].nominal := |
| 1500 |
abs(tray_x_hat[k][i][j]); |
| 1501 |
tray_y_hat[k][i][j].nominal := |
| 1502 |
abs(tray_y_hat[k][i][j]); |
| 1503 |
END FOR; |
| 1504 |
END FOR; |
| 1505 |
FOR k IN ['top','bot'] DO |
| 1506 |
end_x_hat[k][i].nominal := abs(end_x_hat[k][i]); |
| 1507 |
end_y_hat[k][i].nominal := abs(end_y_hat[k][i]); |
| 1508 |
END FOR; |
| 1509 |
slope[i].nominal := abs(slope[i]); |
| 1510 |
END FOR; |
| 1511 |
FOR i IN ['liquid','vapor'] DO |
| 1512 |
FOR j IN [0..h_order] DO |
| 1513 |
h_coeff[i][j].nominal := abs(h_coeff[i][j]); |
| 1514 |
END FOR; |
| 1515 |
END FOR; |
| 1516 |
(* |
| 1517 |
THIS CAUSES SEVERE PROBLEMS WHEN SWITCHING BETWEEN ADIABATIC AND |
| 1518 |
MASS BALANCE: we need better scaling here |
| 1519 |
Qtot.nominal := abs(Qtot); |
| 1520 |
FOR j IN [1..ntrays] DO |
| 1521 |
Qin[j].nominal := abs(Qin[j]); |
| 1522 |
END FOR; |
| 1523 |
*) |
| 1524 |
END scale_self; |
| 1525 |
|
| 1526 |
METHOD scale_all; |
| 1527 |
RUN topliq.scale_all; |
| 1528 |
RUN topvap.scale_all; |
| 1529 |
RUN botliq.scale_all; |
| 1530 |
RUN botvap.scale_all; |
| 1531 |
RUN scale_self; |
| 1532 |
END scale_all; |
| 1533 |
|
| 1534 |
METHOD bound_self; |
| 1535 |
RUN tray[1..ntrays].bound_self; |
| 1536 |
RUN z_set.bound_self; |
| 1537 |
|
| 1538 |
(* NEED BETTER BOUNDING HERE! |
| 1539 |
running these methods leads to convergence problems*) |
| 1540 |
RUN liqin_mix[1..ntrays].bound_self; |
| 1541 |
RUN liqout_mix[1..ntrays].bound_self; |
| 1542 |
RUN vapin_mix[1..ntrays].bound_self; |
| 1543 |
RUN vapout_mix[1..ntrays].bound_self; |
| 1544 |
|
| 1545 |
RUN liqin_state[1..ntrays].bound_self; |
| 1546 |
RUN liqout_state[1..ntrays].bound_self; |
| 1547 |
RUN vapin_state[1..ntrays].bound_self; |
| 1548 |
RUN vapout_state[1..ntrays].bound_self; |
| 1549 |
RUN tray_state[1..ntrays].bound_self; |
| 1550 |
|
| 1551 |
RUN liqin[1..ntrays].bound_self; |
| 1552 |
RUN liqout[1..ntrays].bound_self; |
| 1553 |
RUN vapin[1..ntrays].bound_self; |
| 1554 |
RUN vapout[1..ntrays].bound_self; |
| 1555 |
|
| 1556 |
|
| 1557 |
IF (hat_on == TRUE) THEN |
| 1558 |
x_coeff[components - [inactive_component]][0..x_order].lower_bound |
| 1559 |
:= -18; |
| 1560 |
x_coeff[components - [inactive_component]][0..x_order].upper_bound |
| 1561 |
:= 18; |
| 1562 |
ELSE |
| 1563 |
x_coeff[components - [inactive_component]][0..x_order].lower_bound |
| 1564 |
:= 0; |
| 1565 |
x_coeff[components - [inactive_component]][0..x_order].upper_bound |
| 1566 |
:= 0; |
| 1567 |
END IF; |
| 1568 |
FOR j IN [1..ntrays] DO |
| 1569 |
cmo[j].lower_bound := 1e-8; |
| 1570 |
cmo[j].upper_bound := cmo[j] + scale*cmo[j].nominal; |
| 1571 |
END FOR; |
| 1572 |
cmotot.lower_bound := 1e-8; |
| 1573 |
(* NEED BETTER SCALING HERE |
| 1574 |
cmotot.upper_bound := cmotot + scale*cmotot.nominal; |
| 1575 |
*) |
| 1576 |
x_hat[1..ntrays][components].lower_bound |
| 1577 |
:= -18; |
| 1578 |
x_hat[1..ntrays][components].upper_bound |
| 1579 |
:= 18; |
| 1580 |
FOR i IN components DO |
| 1581 |
FOR j IN [1..ntrays] DO |
| 1582 |
FOR k IN ['in','out'] DO |
| 1583 |
tray_x_hat[k][i][j].lower_bound := -18; |
| 1584 |
tray_x_hat[k][i][j].upper_bound := 18; |
| 1585 |
tray_y_hat[k][i][j].lower_bound := -18; |
| 1586 |
tray_y_hat[k][i][j].upper_bound := 18; |
| 1587 |
END FOR; |
| 1588 |
END FOR; |
| 1589 |
FOR k IN ['top','bot'] DO |
| 1590 |
end_x_hat[k][i].lower_bound := -18; |
| 1591 |
end_x_hat[k][i].upper_bound := 18; |
| 1592 |
end_y_hat[k][i].lower_bound := -18; |
| 1593 |
end_y_hat[k][i].upper_bound := 18; |
| 1594 |
END FOR; |
| 1595 |
slope[i].lower_bound := 0; |
| 1596 |
slope[i].upper_bound := 1/z_set.stot.lower_bound; |
| 1597 |
END FOR; |
| 1598 |
|
| 1599 |
(* NEED BETTER BOUNDING HERE! |
| 1600 |
h_coeff['vapor'][1..h_order].lower_bound := |
| 1601 |
tray[1].vapout.state.H.lower_bound; |
| 1602 |
h_coeff['vapor'][1..h_order].upper_bound := |
| 1603 |
tray[1].vapout.state.H.upper_bound; |
| 1604 |
h_coeff['liquid'][1..h_order].lower_bound := |
| 1605 |
tray[1].vapout.state.H.lower_bound; |
| 1606 |
h_coeff['liquid'][1..h_order].upper_bound := |
| 1607 |
tray[1].vapout.state.H.upper_bound; |
| 1608 |
*) |
| 1609 |
(* |
| 1610 |
THIS CAUSES SEVERE PROBLEMS WHEN SWITCHING BETWEEN ADIABATIC AND |
| 1611 |
MASS BALANCE: we need better bounding here |
| 1612 |
Qtot.lower_bound := Qtot - scale*Qtot.nominal; |
| 1613 |
Qtot.upper_bound := Qtot + scale*Qtot.nominal; |
| 1614 |
FOR j IN [1..ntrays] DO |
| 1615 |
Qin[j].lower_bound := Qin[j] - scale*Qin[j].nominal; |
| 1616 |
Qin[j].upper_bound := Qin[j] + scale*Qin[j].nominal; |
| 1617 |
END FOR; |
| 1618 |
*) |
| 1619 |
END bound_self; |
| 1620 |
|
| 1621 |
METHOD bound_all; |
| 1622 |
RUN topliq.bound_all; |
| 1623 |
RUN topvap.bound_all; |
| 1624 |
RUN botliq.bound_all; |
| 1625 |
RUN botvap.bound_all; |
| 1626 |
RUN bound_self; |
| 1627 |
END bound_all; |
| 1628 |
|
| 1629 |
|
| 1630 |
METHOD s_off; |
| 1631 |
RUN z_set.s_off; |
| 1632 |
END s_off; |
| 1633 |
END coll; |
| 1634 |
|
| 1635 |
|
| 1636 |
|
| 1637 |
MODEL std_coll_stack( |
| 1638 |
ntrays WILL_BE integer_constant; |
| 1639 |
topvap WILL_BE stream; |
| 1640 |
topliq WILL_BE stream; |
| 1641 |
botvap WILL_BE stream; |
| 1642 |
botliq WILL_BE stream; |
| 1643 |
pdL WILL_BE phases_data; |
| 1644 |
pdV WILL_BE phases_data; |
| 1645 |
reduce WILL_BE fraction; |
| 1646 |
equilibrated WILL_BE boolean; |
| 1647 |
z_on WILL_BE boolean; |
| 1648 |
hat_on WILL_BE boolean; |
| 1649 |
hb_on WILL_BE boolean; |
| 1650 |
); |
| 1651 |
|
| 1652 |
cd ALIASES topliq.state.cd; |
| 1653 |
vap_option ALIASES pdV.vapor_option; |
| 1654 |
liq_option ALIASES pdL.liquid1_option; |
| 1655 |
pdVL IS_A phases_data('VL', vap_option, liq_option, 'none'); |
| 1656 |
pdM IS_A phases_data('M', 'none', 'none', 'none'); |
| 1657 |
mat_option ALIASES pdM.liquid1_option; (* none *) |
| 1658 |
|
| 1659 |
FOR i IN [1..ncolls-1] CREATE |
| 1660 |
internal_liquid[i] IS_A coll_material_stream(cd,pdM,equilibrated); |
| 1661 |
internal_vapor[i] IS_A coll_material_stream(cd,pdM,equilibrated); |
| 1662 |
END FOR; |
| 1663 |
|
| 1664 |
coll_vapin[csV] ALIASES |
| 1665 |
(topvap, internal_vapor[1..ncolls-1], botvap) |
| 1666 |
WHERE csV IS_A set OF integer_constant |
| 1667 |
WITH_VALUE (0..ncolls); |
| 1668 |
coll_liqin[csL] ALIASES |
| 1669 |
(topliq, internal_liquid[1..ncolls-1], botliq) |
| 1670 |
WHERE csL IS_A set OF integer_constant |
| 1671 |
WITH_VALUE (1..ncolls+1); |
| 1672 |
|
| 1673 |
Coll_set IS_A set OF integer_constant; |
| 1674 |
|
| 1675 |
ncolls IS_A integer_constant; |
| 1676 |
ncolls :== 2; |
| 1677 |
|
| 1678 |
up_down[1..ncolls] IS_A real; |
| 1679 |
|
| 1680 |
a IS_A factor; |
| 1681 |
|
| 1682 |
FOR i IN [1..ncolls] CREATE |
| 1683 |
coll[i] IS_A coll( |
| 1684 |
ntrays, |
| 1685 |
coll_vapin[i-1], |
| 1686 |
coll_liqin[i], |
| 1687 |
coll_vapin[i], |
| 1688 |
coll_liqin[i+1], |
| 1689 |
pdL, |
| 1690 |
pdV, |
| 1691 |
reduce, |
| 1692 |
equilibrated, |
| 1693 |
up_down[i], |
| 1694 |
a, |
| 1695 |
z_on, |
| 1696 |
hat_on, |
| 1697 |
hb_on |
| 1698 |
); |
| 1699 |
END FOR; |
| 1700 |
|
| 1701 |
straight_choice IS_A symbol_constant; |
| 1702 |
split[1..ncolls] IS_A fraction; |
| 1703 |
stot IS_A factor; |
| 1704 |
scale IS_A scaling_constant; |
| 1705 |
|
| 1706 |
FOR j IN [1..ncolls] CREATE |
| 1707 |
tray_split[j]: coll[j].z_set.stot = split[j]*stot; |
| 1708 |
END FOR; |
| 1709 |
|
| 1710 |
stot_def: stot = SUM[coll[j].z_set.stot | j IN [1..ncolls]]; |
| 1711 |
|
| 1712 |
|
| 1713 |
(* Plotting Section *) |
| 1714 |
z_shift IS_A factor; |
| 1715 |
s_shift IS_A factor; |
| 1716 |
|
| 1717 |
n_plt_points IS_A set OF integer_constant; |
| 1718 |
n_plt_points :== [0..ncolls*(ntrays+1)]; |
| 1719 |
|
| 1720 |
z_loc_1: coll[1].z_shift = z_shift; |
| 1721 |
s_loc_1: coll[1].s_shift = s_shift; |
| 1722 |
FOR i IN [2..ncolls] CREATE |
| 1723 |
z_loc[i]: coll[i].z_shift = coll[i-1].z_shift + |
| 1724 |
coll[i-1].z_set.z_values[ntrays+1]; |
| 1725 |
s_loc[i]: coll[i].s_shift = coll[i-1].s_shift + |
| 1726 |
coll[i-1].z_set.s_values[ntrays+1]; |
| 1727 |
END FOR; |
| 1728 |
|
| 1729 |
|
| 1730 |
z_tray_loc[tp] ALIASES ( |
| 1731 |
coll[1].z_tray_loc[0], |
| 1732 |
coll[1..ncolls].z_tray_loc[1..ntrays+1] |
| 1733 |
) WHERE |
| 1734 |
tp IS_A set OF integer_constant |
| 1735 |
WITH_VALUE (0..ncolls*(ntrays+1)); |
| 1736 |
|
| 1737 |
s_tray_loc[tp2] ALIASES ( |
| 1738 |
coll[1].s_tray_loc[0], |
| 1739 |
coll[1..ncolls].s_tray_loc[1..ntrays+1] |
| 1740 |
) WHERE |
| 1741 |
tp2 IS_A set OF integer_constant |
| 1742 |
WITH_VALUE (0..ncolls*(ntrays+1)); |
| 1743 |
|
| 1744 |
|
| 1745 |
FOR i IN topliq.components CREATE |
| 1746 |
x_plot[i][np[i]] ALIASES ( |
| 1747 |
topliq.state.y[i], |
| 1748 |
coll[1..ncolls].x_plot[i][1..ntrays+1] |
| 1749 |
) WHERE |
| 1750 |
np[i] IS_A set OF integer_constant |
| 1751 |
WITH_VALUE (0..ncolls*(ntrays+1)); |
| 1752 |
y_plot[i][np2[i]] ALIASES ( |
| 1753 |
topvap.state.y[i], |
| 1754 |
coll[1..ncolls].y_plot[i][1..ntrays+1] |
| 1755 |
) WHERE |
| 1756 |
np2[i] IS_A set OF integer_constant |
| 1757 |
WITH_VALUE (0..ncolls*(ntrays+1)); |
| 1758 |
END FOR; |
| 1759 |
|
| 1760 |
FOR i IN topliq.components CREATE |
| 1761 |
x_z_curves[i] IS_A plt_curve(n_plt_points,x_plot[i],z_tray_loc); |
| 1762 |
x_s_curves[i] IS_A plt_curve(n_plt_points,x_plot[i],s_tray_loc); |
| 1763 |
y_z_curves[i] IS_A plt_curve(n_plt_points,y_plot[i],z_tray_loc); |
| 1764 |
y_s_curves[i] IS_A plt_curve(n_plt_points,y_plot[i],s_tray_loc); |
| 1765 |
END FOR; |
| 1766 |
|
| 1767 |
Plot_xz IS_A plt_plot_symbol(topliq.components,x_z_curves); |
| 1768 |
Plot_xs IS_A plt_plot_symbol(topliq.components,x_s_curves); |
| 1769 |
|
| 1770 |
Plot_yz IS_A plt_plot_symbol(topliq.components,y_z_curves); |
| 1771 |
Plot_ys IS_A plt_plot_symbol(topliq.components,y_s_curves); |
| 1772 |
|
| 1773 |
METHODS |
| 1774 |
METHOD default_self; |
| 1775 |
up_down[1] := -1; |
| 1776 |
up_down[2] := 1; |
| 1777 |
a := 0.1; |
| 1778 |
a.lower_bound := 0.0; |
| 1779 |
a.upper_bound := 3.0; |
| 1780 |
stot := 2; |
| 1781 |
stot.lower_bound := 2; |
| 1782 |
split[1..ncolls] := 1.0/ncolls; |
| 1783 |
RUN internal_liquid[1..ncolls-1].default_self; |
| 1784 |
RUN internal_vapor[1..ncolls-1].default_self; |
| 1785 |
RUN coll[1..ncolls].default_self; |
| 1786 |
|
| 1787 |
z_shift := 0.0; |
| 1788 |
s_shift := 0.0; |
| 1789 |
|
| 1790 |
Plot_xz.title := 'Liquid Compositions vs. z'; |
| 1791 |
Plot_xz.YLabel := 'Liquid Compositions'; |
| 1792 |
Plot_xz.XLabel := 'transformed stage location (z)'; |
| 1793 |
Plot_xz.Ylow := 0; |
| 1794 |
Plot_xz.Yhigh := 1; |
| 1795 |
|
| 1796 |
Plot_xs.title := 'Liquid Compositions vs. s'; |
| 1797 |
Plot_xs.YLabel := 'Liquid Compositions'; |
| 1798 |
Plot_xs.XLabel := 'stage location (s)'; |
| 1799 |
Plot_xs.Ylow := 0; |
| 1800 |
Plot_xs.Yhigh := 1; |
| 1801 |
|
| 1802 |
Plot_yz.title := 'Vapor Compositions vs. z'; |
| 1803 |
Plot_yz.YLabel := 'Vapor Compositions'; |
| 1804 |
Plot_yz.XLabel := 'transformed stage location (z)'; |
| 1805 |
Plot_yz.Ylow := 0; |
| 1806 |
Plot_yz.Yhigh := 1; |
| 1807 |
|
| 1808 |
Plot_ys.title := 'Vapor Compositions vs. s'; |
| 1809 |
Plot_ys.YLabel := 'Vapor Compositions'; |
| 1810 |
Plot_ys.XLabel := 'stage location (s)'; |
| 1811 |
Plot_ys.Ylow := 0; |
| 1812 |
Plot_ys.Yhigh := 1; |
| 1813 |
|
| 1814 |
|
| 1815 |
FOR i IN topliq.components DO |
| 1816 |
Plot_xz.curve[i].legend := i; |
| 1817 |
Plot_xs.curve[i].legend := i; |
| 1818 |
Plot_yz.curve[i].legend := i; |
| 1819 |
Plot_ys.curve[i].legend := i; |
| 1820 |
END FOR; |
| 1821 |
|
| 1822 |
END default_self; |
| 1823 |
METHOD default_all; |
| 1824 |
RUN topvap[1..ntrays].default_all; |
| 1825 |
RUN topliq[1..ntrays].default_all; |
| 1826 |
RUN botvap[1..ntrays].default_all; |
| 1827 |
RUN botliq[1..ntrays].default_all; |
| 1828 |
(* reduce := *) |
| 1829 |
RUN default_self; |
| 1830 |
END default_all; |
| 1831 |
METHOD scale_self; |
| 1832 |
stot.nominal := stot; |
| 1833 |
RUN internal_liquid[1..ncolls-1].scale_self; |
| 1834 |
RUN internal_vapor[1..ncolls-1].scale_self; |
| 1835 |
RUN coll[1..ncolls].scale_self; |
| 1836 |
END scale_self; |
| 1837 |
METHOD scale_all; |
| 1838 |
RUN topvap[1..ntrays].scale_all; |
| 1839 |
RUN topliq[1..ntrays].scale_all; |
| 1840 |
RUN botvap[1..ntrays].scale_all; |
| 1841 |
RUN botliq[1..ntrays].scale_all; |
| 1842 |
(* reduce := *) |
| 1843 |
RUN scale_self; |
| 1844 |
END scale_all; |
| 1845 |
METHOD bound_self; |
| 1846 |
coll[1..ncolls].z_set.stot.upper_bound := |
| 1847 |
stot.upper_bound/ncolls + 1.0; |
| 1848 |
RUN internal_liquid[1..ncolls-1].bound_self; |
| 1849 |
RUN internal_vapor[1..ncolls-1].bound_self; |
| 1850 |
RUN coll[1..ncolls].bound_self; |
| 1851 |
END bound_self; |
| 1852 |
METHOD bound_all; |
| 1853 |
RUN topvap[1..ntrays].bound_all; |
| 1854 |
RUN topliq[1..ntrays].bound_all; |
| 1855 |
RUN botvap[1..ntrays].bound_all; |
| 1856 |
RUN botliq[1..ntrays].bound_all; |
| 1857 |
(* reduce := *) |
| 1858 |
RUN bound_self; |
| 1859 |
END bound_all; |
| 1860 |
METHOD check_self; |
| 1861 |
END check_self; |
| 1862 |
METHOD check_all; |
| 1863 |
RUN check_self; |
| 1864 |
END check_all; |
| 1865 |
|
| 1866 |
METHOD values; |
| 1867 |
|
| 1868 |
RUN coll[1..ncolls].values; |
| 1869 |
END values; |
| 1870 |
METHOD seqmod_massbal; |
| 1871 |
hb_on := FALSE; |
| 1872 |
equilibrated := FALSE; |
| 1873 |
RUN coll[1..ncolls].seqmod_massbal; |
| 1874 |
FOR j IN [1..ncolls] DO |
| 1875 |
(*coll[j].botliq.state.H.fixed := FALSE;*) |
| 1876 |
|
| 1877 |
coll[j].z_set |
| 1878 |
.z_values[coll[j].ntrays+1].fixed := FALSE; |
| 1879 |
coll[j].z_set.stot.fixed := FALSE; |
| 1880 |
END FOR; |
| 1881 |
stot.fixed := TRUE; |
| 1882 |
split[1..ncolls-1].fixed := TRUE; |
| 1883 |
IF (hb_on) THEN |
| 1884 |
RUN heat_balance; |
| 1885 |
END IF; |
| 1886 |
z_shift.fixed := FALSE; |
| 1887 |
s_shift.fixed := FALSE; |
| 1888 |
END seqmod_massbal; |
| 1889 |
|
| 1890 |
METHOD seqmod_fullthermo; |
| 1891 |
hb_on := FALSE; |
| 1892 |
equilibrated := TRUE; |
| 1893 |
RUN coll[1..ncolls].seqmod_fullthermo; |
| 1894 |
FOR j IN [1..ncolls] DO |
| 1895 |
(*coll[j].botliq.state.H.fixed := FALSE;*) |
| 1896 |
|
| 1897 |
coll[j].z_set |
| 1898 |
.z_values[coll[j].ntrays+1].fixed := FALSE; |
| 1899 |
coll[j].z_set.stot.fixed := FALSE; |
| 1900 |
END FOR; |
| 1901 |
stot.fixed := TRUE; |
| 1902 |
split[1..ncolls-1].fixed := TRUE; |
| 1903 |
IF (hb_on) THEN |
| 1904 |
RUN heat_balance; |
| 1905 |
END IF; |
| 1906 |
|
| 1907 |
z_shift.fixed := FALSE; |
| 1908 |
s_shift.fixed := FALSE; |
| 1909 |
END seqmod_fullthermo; |
| 1910 |
|
| 1911 |
METHOD seqmod_adiabatic; |
| 1912 |
hb_on := TRUE; |
| 1913 |
equilibrated := TRUE; |
| 1914 |
RUN coll[1..ncolls].seqmod_adiabatic; |
| 1915 |
FOR j IN [1..ncolls] DO |
| 1916 |
(*coll[j].botliq.state.H.fixed := FALSE;*) |
| 1917 |
|
| 1918 |
coll[j].z_set |
| 1919 |
.z_values[coll[j].ntrays+1].fixed := FALSE; |
| 1920 |
coll[j].z_set.stot.fixed := FALSE; |
| 1921 |
END FOR; |
| 1922 |
stot.fixed := TRUE; |
| 1923 |
split[1..ncolls-1].fixed := TRUE; |
| 1924 |
IF (hb_on) THEN |
| 1925 |
RUN heat_balance; |
| 1926 |
END IF; |
| 1927 |
|
| 1928 |
z_shift.fixed := FALSE; |
| 1929 |
s_shift.fixed := FALSE; |
| 1930 |
END seqmod_adiabatic; |
| 1931 |
|
| 1932 |
|
| 1933 |
METHOD specify; |
| 1934 |
IF (hb_on AND NOT(equilibrated)) THEN |
| 1935 |
equilibrated := TRUE; |
| 1936 |
END IF; |
| 1937 |
IF (hb_on AND equilibrated) THEN |
| 1938 |
RUN seqmod_adiabatic; |
| 1939 |
END IF; |
| 1940 |
IF (NOT(hb_on) AND equilibrated) THEN |
| 1941 |
RUN seqmod_fullthermo; |
| 1942 |
END IF; |
| 1943 |
IF (NOT(hb_on) AND NOT(equilibrated)) THEN |
| 1944 |
RUN seqmod_massbal; |
| 1945 |
END IF; |
| 1946 |
RUN coll[1].topliq.specify; |
| 1947 |
RUN coll[ncolls].botvap.specify; |
| 1948 |
z_shift.fixed := TRUE; |
| 1949 |
s_shift.fixed := TRUE; |
| 1950 |
END specify; |
| 1951 |
METHOD reset; |
| 1952 |
RUN ClearAll; |
| 1953 |
RUN specify; |
| 1954 |
END reset; |
| 1955 |
METHOD standard_poly; |
| 1956 |
RUN coll[1..ncolls].standard_poly; |
| 1957 |
END standard_poly; |
| 1958 |
METHOD trans_poly; |
| 1959 |
RUN coll[1..ncolls].trans_poly; |
| 1960 |
END trans_poly; |
| 1961 |
METHOD z_based_poly; |
| 1962 |
RUN coll[1..ncolls].z_based_poly; |
| 1963 |
END z_based_poly; |
| 1964 |
METHOD s_based_poly; |
| 1965 |
RUN coll[1..ncolls].s_based_poly; |
| 1966 |
END s_based_poly; |
| 1967 |
|
| 1968 |
METHOD heat_balance; |
| 1969 |
RUN coll[1..ncolls].heat_balance; |
| 1970 |
END heat_balance; |
| 1971 |
|
| 1972 |
METHOD reset_to_massbal; |
| 1973 |
hb_on := FALSE; |
| 1974 |
equilibrated := FALSE; |
| 1975 |
RUN reset; |
| 1976 |
END reset_to_massbal; |
| 1977 |
|
| 1978 |
METHOD reset_to_fullthermo; |
| 1979 |
hb_on := FALSE; |
| 1980 |
equilibrated := TRUE; |
| 1981 |
RUN reset; |
| 1982 |
END reset_to_fullthermo; |
| 1983 |
|
| 1984 |
METHOD reset_to_adiabatic; |
| 1985 |
hb_on := TRUE; |
| 1986 |
equilibrated := TRUE; |
| 1987 |
RUN reset; |
| 1988 |
END reset_to_adiabatic; |
| 1989 |
|
| 1990 |
METHOD reduce_Q; |
| 1991 |
RUN coll[1..ncolls].reduce_Q; |
| 1992 |
END reduce_Q; |
| 1993 |
|
| 1994 |
METHOD zero_Q; |
| 1995 |
reduce := 0; |
| 1996 |
RUN reduce_Q; |
| 1997 |
END zero_Q; |
| 1998 |
|
| 1999 |
METHOD CMO; |
| 2000 |
RUN coll[1..ncolls].CMO; |
| 2001 |
END CMO; |
| 2002 |
|
| 2003 |
|
| 2004 |
END std_coll_stack; |
| 2005 |
|
| 2006 |
MODEL simple_coll_column( |
| 2007 |
ntrays WILL_BE integer_constant; |
| 2008 |
pdVL WILL_BE phases_data; |
| 2009 |
distillate WILL_BE stream; |
| 2010 |
feed WILL_BE stream; |
| 2011 |
bottoms WILL_BE stream; |
| 2012 |
equilibrated WILL_BE boolean; |
| 2013 |
reduce WILL_BE fraction; |
| 2014 |
z_on WILL_BE boolean; |
| 2015 |
hat_on WILL_BE boolean; |
| 2016 |
hb_on WILL_BE boolean; |
| 2017 |
) WHERE ( |
| 2018 |
distillate, bottoms, feed WILL_NOT_BE_THE_SAME; |
| 2019 |
feed.cd, distillate.cd, bottoms.cd WILL_BE_THE_SAME; |
| 2020 |
pdVL.phase_indicator == 'VL'; |
| 2021 |
distillate.pd.phase_indicator IN ['L','VL'] == TRUE; |
| 2022 |
pdVL.liquid1_option == distillate.pd.liquid1_option; |
| 2023 |
feed.pd.phase_indicator IN ['V','L','VL'] == TRUE; |
| 2024 |
); |
| 2025 |
|
| 2026 |
pdL ALIASES bottoms.pd; |
| 2027 |
pdV IS_A phases_data('V', pdVL.vapor_option, 'none', 'none'); |
| 2028 |
pdM IS_A phases_data('M', 'none', 'none', 'none'); |
| 2029 |
cd ALIASES feed.cd; |
| 2030 |
components ALIASES feed.components; |
| 2031 |
|
| 2032 |
nfeeds IS_A integer_constant; |
| 2033 |
nfeeds :== 1; |
| 2034 |
|
| 2035 |
coll_stack[cs] ALIASES |
| 2036 |
(rectifying_section,stripping_section) |
| 2037 |
WHERE cs IS_A set OF integer_constant |
| 2038 |
WITH_VALUE (1..2); |
| 2039 |
|
| 2040 |
(*feed condition*) |
| 2041 |
saturated_liquid_feed IS_A start_true; |
| 2042 |
saturated_vapor_feed IS_A start_false; |
| 2043 |
|
| 2044 |
(* inter-section streams *) |
| 2045 |
rectifier_vapin "vapor rising from feed tray", |
| 2046 |
stripper_vapin "vapor rising from reboiler" |
| 2047 |
IS_A stream(cd, pdV, equilibrated); |
| 2048 |
|
| 2049 |
condenser_vapin "vapor rising to condenser", |
| 2050 |
feed_tray_vapin "vapor rising from stripper" |
| 2051 |
IS_A coll_material_stream(cd, pdM, equilibrated); |
| 2052 |
|
| 2053 |
rectifier_liqin "reflux condensate", |
| 2054 |
stripper_liqin "liquid falling from feed tray" |
| 2055 |
IS_A stream(cd, pdL, equilibrated); |
| 2056 |
|
| 2057 |
feed_tray_liqin "liquid falling from rectifier", |
| 2058 |
reboiler_liqin "liquid falling to reboiler" |
| 2059 |
IS_A coll_material_stream(cd, pdM, equilibrated); |
| 2060 |
|
| 2061 |
(* typical heat duties *) |
| 2062 |
Qin_condenser "condenser duty", |
| 2063 |
Qin_feed "feed heater duty", |
| 2064 |
Qin_reboiler "reboiler duty" IS_A energy_rate; |
| 2065 |
|
| 2066 |
(* column sections *) |
| 2067 |
condenser IS_A coll_partial_condenser( |
| 2068 |
Qin_condenser, |
| 2069 |
condenser_vapin, |
| 2070 |
rectifier_liqin, |
| 2071 |
distillate, |
| 2072 |
equilibrated |
| 2073 |
); |
| 2074 |
rectifying_section "the trays above the feed" IS_A std_coll_stack( |
| 2075 |
ntrays, |
| 2076 |
condenser_vapin, |
| 2077 |
rectifier_liqin, |
| 2078 |
rectifier_vapin, |
| 2079 |
feed_tray_liqin, |
| 2080 |
pdL, |
| 2081 |
pdV, |
| 2082 |
reduce, |
| 2083 |
equilibrated, |
| 2084 |
z_on, |
| 2085 |
hat_on, |
| 2086 |
hb_on |
| 2087 |
); |
| 2088 |
feed_tray IS_A coll_feed_tray( |
| 2089 |
Qin_feed, |
| 2090 |
equilibrated, |
| 2091 |
feed, |
| 2092 |
feed_tray_liqin, |
| 2093 |
feed_tray_vapin, |
| 2094 |
stripper_liqin, |
| 2095 |
rectifier_vapin |
| 2096 |
); |
| 2097 |
stripping_section "the trays below the feed" IS_A std_coll_stack( |
| 2098 |
ntrays, |
| 2099 |
feed_tray_vapin, |
| 2100 |
stripper_liqin, |
| 2101 |
stripper_vapin, |
| 2102 |
reboiler_liqin, |
| 2103 |
pdL, |
| 2104 |
pdV, |
| 2105 |
reduce, |
| 2106 |
equilibrated, |
| 2107 |
z_on, |
| 2108 |
hat_on, |
| 2109 |
hb_on |
| 2110 |
); |
| 2111 |
reboiler IS_A coll_simple_reboiler( |
| 2112 |
Qin_reboiler, |
| 2113 |
equilibrated, |
| 2114 |
reboiler_liqin, |
| 2115 |
stripper_vapin, |
| 2116 |
bottoms |
| 2117 |
); |
| 2118 |
|
| 2119 |
stot, |
| 2120 |
s_stack[1..nfeeds+1] IS_A factor; |
| 2121 |
split[1..nfeeds+1] IS_A fraction; |
| 2122 |
xsi[components] IS_A fraction; |
| 2123 |
xsi_set[components] IS_A fraction; |
| 2124 |
xsi_diff[components] IS_A fraction; |
| 2125 |
scale IS_A scaling_constant; |
| 2126 |
|
| 2127 |
s_stack[1], |
| 2128 |
rectifying_section.stot ARE_THE_SAME; |
| 2129 |
s_stack[2], |
| 2130 |
stripping_section.stot ARE_THE_SAME; |
| 2131 |
stot = SUM[s_stack[1..nfeeds+1]]; |
| 2132 |
|
| 2133 |
FOR j IN [1..nfeeds+1] CREATE |
| 2134 |
|
| 2135 |
tray_split[j]: s_stack[j] = split[j]*stot; |
| 2136 |
END FOR; |
| 2137 |
|
| 2138 |
FOR i IN components CREATE |
| 2139 |
OverallMB[i]: feed_tray.feed.f[i] = |
| 2140 |
condenser.distillate.f[i] + |
| 2141 |
reboiler.bottoms.f[i]; |
| 2142 |
END FOR; |
| 2143 |
|
| 2144 |
FOR i IN components CREATE |
| 2145 |
xsi[i]*feed_tray.feed.f[i] |
| 2146 |
= condenser.distillate.f[i]; |
| 2147 |
xsi_diff[i] = 0.5*sqr(xsi[i] - xsi_set[i]); |
| 2148 |
END FOR; |
| 2149 |
|
| 2150 |
recovery: MINIMIZE SUM[xsi_diff[i] | i IN components]; |
| 2151 |
|
| 2152 |
binary_sep[components][components] IS_A factor; |
| 2153 |
|
| 2154 |
FOR i IN components CREATE |
| 2155 |
FOR j IN components CREATE |
| 2156 |
binary_sep[i][j] * |
| 2157 |
(condenser.distillate.f[i] + condenser.distillate.f[j]) * |
| 2158 |
(reboiler.bottoms.f[i] + reboiler.bottoms.f[j]) = |
| 2159 |
(condenser.distillate.f[i] * |
| 2160 |
(reboiler.bottoms.f[i] + reboiler.bottoms.f[j]) - |
| 2161 |
reboiler.bottoms.f[i] * |
| 2162 |
(condenser.distillate.f[i] + condenser.distillate.f[j])); |
| 2163 |
|
| 2164 |
sep_opt[i][j]: MINIMIZE -sqr(binary_sep[i][j]); |
| 2165 |
|
| 2166 |
END FOR; |
| 2167 |
END FOR; |
| 2168 |
|
| 2169 |
(* costing *) |
| 2170 |
V[ns] ALIASES |
| 2171 |
(coll_stack[1..nfeeds+1].coll[1].tray[1].vapout.flow) |
| 2172 |
WHERE ns IS_A set OF integer_constant |
| 2173 |
WITH_VALUE (1..nfeeds+1); |
| 2174 |
|
| 2175 |
V_bar[ns2] ALIASES |
| 2176 |
(coll_stack[1..nfeeds+1].coll[1].tray[1].vapout.state.V) |
| 2177 |
WHERE ns2 IS_A set OF integer_constant |
| 2178 |
WITH_VALUE (1..nfeeds+1); |
| 2179 |
|
| 2180 |
M_g IS_A molar_mass; |
| 2181 |
|
| 2182 |
mol_mass: M_g = SUM[feed.Details.state.cd.data[i].mw* |
| 2183 |
feed_tray.vapout.state.y[i] |
| 2184 |
| i IN components]; |
| 2185 |
|
| 2186 |
nsections IS_A integer_constant; |
| 2187 |
nsections :== nfeeds+1; |
| 2188 |
|
| 2189 |
column_cost IS_A cost_per_time; |
| 2190 |
cost_calc IS_A cost_calc( |
| 2191 |
column_cost, |
| 2192 |
distillate.state.T, |
| 2193 |
condenser.Qin, |
| 2194 |
reboiler.Qin, |
| 2195 |
nsections, |
| 2196 |
V, |
| 2197 |
V_bar, |
| 2198 |
stot, |
| 2199 |
M_g, |
| 2200 |
feed.flow |
| 2201 |
); |
| 2202 |
|
| 2203 |
objmult IS_A factor; |
| 2204 |
opcost, capcost IS_A cost_per_time; |
| 2205 |
optime IS_A fraction; |
| 2206 |
op_cost_def: opcost = cost_calc.water_cost + cost_calc.steam_cost; |
| 2207 |
cap_cost_def: capcost = cost_calc.column_cost + |
| 2208 |
cost_calc.condenser_cost + |
| 2209 |
cost_calc.reboiler_cost; |
| 2210 |
tot_cost: MINIMIZE objmult*(capcost + optime*opcost); |
| 2211 |
cap_cost: MINIMIZE objmult*capcost; |
| 2212 |
op_cost: MINIMIZE objmult*opcost; |
| 2213 |
|
| 2214 |
(* |
| 2215 |
* Cost calculation doesn't mean much for constant alpha case. |
| 2216 |
* We do provide overide though. :) |
| 2217 |
*) |
| 2218 |
|
| 2219 |
WHEN (equilibrated) |
| 2220 |
CASE TRUE: |
| 2221 |
USE cost_calc; |
| 2222 |
USE mol_mass; |
| 2223 |
USE tot_cost; |
| 2224 |
USE cap_cost; |
| 2225 |
USE op_cost; |
| 2226 |
USE cap_cost_def; |
| 2227 |
USE op_cost_def; |
| 2228 |
OTHERWISE: |
| 2229 |
END WHEN; |
| 2230 |
|
| 2231 |
do_cost_calc IS_A boolean; |
| 2232 |
WHEN (do_cost_calc) |
| 2233 |
CASE TRUE: |
| 2234 |
USE cost_calc; |
| 2235 |
USE mol_mass; |
| 2236 |
USE tot_cost; |
| 2237 |
USE cap_cost; |
| 2238 |
USE op_cost; |
| 2239 |
USE cap_cost_def; |
| 2240 |
USE op_cost_def; |
| 2241 |
OTHERWISE: |
| 2242 |
END WHEN; |
| 2243 |
|
| 2244 |
|
| 2245 |
(* Plotting Section *) |
| 2246 |
z_shift IS_A factor; |
| 2247 |
s_shift IS_A factor; |
| 2248 |
|
| 2249 |
n_plt_points_x IS_A set OF integer_constant; |
| 2250 |
n_plt_points_x :== [0..(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)]; |
| 2251 |
n_plt_points_y IS_A set OF integer_constant; |
| 2252 |
n_plt_points_y :== [0..(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)-1]; |
| 2253 |
|
| 2254 |
z_loc_1: coll_stack[1].z_shift = z_shift; |
| 2255 |
s_loc_1: coll_stack[1].s_shift = s_shift; |
| 2256 |
|
| 2257 |
z_space IS_A factor; |
| 2258 |
|
| 2259 |
FOR i IN [2..nfeeds+1] CREATE |
| 2260 |
z_loc[i]: coll_stack[i].z_shift = |
| 2261 |
coll_stack[i-1].z_tray_loc[CARD[coll_stack[i-1].n_plt_points]-1] |
| 2262 |
+ z_space; (* add arbitrary factor *) |
| 2263 |
s_loc[i]: coll_stack[i].s_shift = |
| 2264 |
coll_stack[i-1].s_tray_loc[coll_stack[1].ncolls*(ntrays+1)] |
| 2265 |
+ 1; (* FOR feed tray *) |
| 2266 |
END FOR; |
| 2267 |
|
| 2268 |
|
| 2269 |
reboiler_s_loc, reboiler_z_loc IS_A factor; |
| 2270 |
|
| 2271 |
z_tray_loc_x[tp] ALIASES ( |
| 2272 |
coll_stack[1..nfeeds+1].z_tray_loc[0..coll_stack[1].ncolls*(ntrays+1)] |
| 2273 |
, reboiler_z_loc |
| 2274 |
) WHERE |
| 2275 |
tp IS_A set OF integer_constant |
| 2276 |
WITH_VALUE (0..(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)); |
| 2277 |
|
| 2278 |
s_tray_loc_x[tp2] ALIASES ( |
| 2279 |
coll_stack[1..nfeeds+1].s_tray_loc[0..coll_stack[1].ncolls*(ntrays+1)] |
| 2280 |
, reboiler_s_loc |
| 2281 |
) WHERE |
| 2282 |
tp2 IS_A set OF integer_constant |
| 2283 |
WITH_VALUE (0..(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)); |
| 2284 |
|
| 2285 |
reb_s_loc: reboiler_s_loc = 1 + |
| 2286 |
s_tray_loc_x[(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)-1]; |
| 2287 |
reb_z_loc: reboiler_z_loc = |
| 2288 |
coll_stack[nfeeds+1]. |
| 2289 |
z_tray_loc[CARD[coll_stack[nfeeds+1].n_plt_points]-1] + |
| 2290 |
z_space; |
| 2291 |
|
| 2292 |
z_tray_loc_y[tp3] ALIASES ( |
| 2293 |
coll_stack[1..nfeeds+1].z_tray_loc[0..coll_stack[1].ncolls*(ntrays+1)] |
| 2294 |
) WHERE |
| 2295 |
tp3 IS_A set OF integer_constant |
| 2296 |
WITH_VALUE (0..(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)-1); |
| 2297 |
|
| 2298 |
s_tray_loc_y[tp4] ALIASES ( |
| 2299 |
coll_stack[1..nfeeds+1].s_tray_loc[0..coll_stack[1].ncolls*(ntrays+1)] |
| 2300 |
) WHERE |
| 2301 |
tp4 IS_A set OF integer_constant |
| 2302 |
WITH_VALUE (0..(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)-1); |
| 2303 |
|
| 2304 |
|
| 2305 |
FOR i IN coll_stack[1].topliq.components CREATE |
| 2306 |
x_plot[i][np[i]] ALIASES ( |
| 2307 |
coll_stack[1..nfeeds+1]. |
| 2308 |
x_plot[i][0..coll_stack[1].ncolls*(ntrays+1)], |
| 2309 |
reboiler.bottoms.state.y[i] |
| 2310 |
) WHERE |
| 2311 |
np[i] IS_A set OF integer_constant |
| 2312 |
WITH_VALUE (0..(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)); |
| 2313 |
y_plot[i][np2[i]] ALIASES ( |
| 2314 |
coll_stack[1..nfeeds+1]. |
| 2315 |
y_plot[i][0..coll_stack[1].ncolls*(ntrays+1)] |
| 2316 |
) WHERE |
| 2317 |
np2[i] IS_A set OF integer_constant |
| 2318 |
WITH_VALUE (0..(nfeeds+1)*(coll_stack[1].ncolls*ntrays+3)-1); |
| 2319 |
END FOR; |
| 2320 |
|
| 2321 |
FOR i IN coll_stack[1].topliq.components CREATE |
| 2322 |
x_z_curves[i] IS_A plt_curve(n_plt_points_x,x_plot[i],z_tray_loc_x); |
| 2323 |
x_s_curves[i] IS_A plt_curve(n_plt_points_x,x_plot[i],s_tray_loc_x); |
| 2324 |
y_z_curves[i] IS_A plt_curve(n_plt_points_y,y_plot[i],z_tray_loc_y); |
| 2325 |
y_s_curves[i] IS_A plt_curve(n_plt_points_y,y_plot[i],s_tray_loc_y); |
| 2326 |
END FOR; |
| 2327 |
|
| 2328 |
Plot_xz IS_A plt_plot_symbol(coll_stack[1].topliq.components,x_z_curves); |
| 2329 |
Plot_xs IS_A plt_plot_symbol(coll_stack[1].topliq.components,x_s_curves); |
| 2330 |
|
| 2331 |
Plot_yz IS_A plt_plot_symbol(coll_stack[1].topliq.components,y_z_curves); |
| 2332 |
Plot_ys IS_A plt_plot_symbol(coll_stack[1].topliq.components,y_s_curves); |
| 2333 |
|
| 2334 |
ncomps IS_A integer_constant; |
| 2335 |
ncomps :== CARD[components]; |
| 2336 |
|
| 2337 |
SELECT (ncomps) |
| 2338 |
CASE 3: |
| 2339 |
T_Liq_diagram_e IS_A |
| 2340 |
ternary_plot_equilateral('liquid composition profiles', |
| 2341 |
components, |
| 2342 |
CHOICE[components], |
| 2343 |
CHOICE[components - [CHOICE[components]]], |
| 2344 |
n_plt_points_x,x_plot); |
| 2345 |
T_Vap_diagram_e IS_A |
| 2346 |
ternary_plot_equilateral('vapor composition profiles', |
| 2347 |
components, |
| 2348 |
CHOICE[components], |
| 2349 |
CHOICE[components - [CHOICE[components]]], |
| 2350 |
n_plt_points_y,y_plot); |
| 2351 |
END SELECT; |
| 2352 |
|
| 2353 |
METHODS |
| 2354 |
|
| 2355 |
METHOD default_self; |
| 2356 |
|
| 2357 |
RUN condenser_vapin.default_self; |
| 2358 |
RUN rectifier_liqin.default_self; |
| 2359 |
RUN rectifier_vapin.default_self; |
| 2360 |
RUN feed_tray_liqin.default_self; |
| 2361 |
RUN feed_tray_vapin.default_self; |
| 2362 |
RUN stripper_liqin.default_self; |
| 2363 |
RUN stripper_vapin.default_self; |
| 2364 |
RUN reboiler_liqin.default_self; |
| 2365 |
|
| 2366 |
RUN condenser.default_self; |
| 2367 |
RUN coll_stack[1..nfeeds+1].default_self; |
| 2368 |
RUN feed_tray.default_self; |
| 2369 |
RUN reboiler.default_self; |
| 2370 |
|
| 2371 |
RUN cost_calc.default_self; |
| 2372 |
|
| 2373 |
hb_on := FALSE; |
| 2374 |
equilibrated := FALSE; |
| 2375 |
do_cost_calc := FALSE; |
| 2376 |
objmult.fixed := TRUE; |
| 2377 |
objmult := 10000; |
| 2378 |
optime.fixed := TRUE; |
| 2379 |
optime := 1.0; |
| 2380 |
split[1..nfeeds+1] := 1.0/(nfeeds+1); |
| 2381 |
|
| 2382 |
z_shift.fixed := TRUE; |
| 2383 |
s_shift.fixed := TRUE; |
| 2384 |
z_shift := 0; |
| 2385 |
s_shift := 0; |
| 2386 |
z_space := 0.1; |
| 2387 |
|
| 2388 |
distillate.state.phase_fraction['vapor'] := 0; |
| 2389 |
|
| 2390 |
Plot_xz.title := 'Liquid Compositions vs. z'; |
| 2391 |
Plot_xz.YLabel := 'Liquid Compositions'; |
| 2392 |
Plot_xz.XLabel := 'transformed stage location (z)'; |
| 2393 |
Plot_xz.Ylow := 0; |
| 2394 |
Plot_xz.Yhigh := 1; |
| 2395 |
|
| 2396 |
Plot_xs.title := 'Liquid Compositions vs. s'; |
| 2397 |
Plot_xs.YLabel := 'Liquid Compositions'; |
| 2398 |
Plot_xs.XLabel := 'stage location (s)'; |
| 2399 |
Plot_xs.Ylow := 0; |
| 2400 |
Plot_xs.Yhigh := 1; |
| 2401 |
|
| 2402 |
Plot_yz.title := 'Vapor Compositions vs. z'; |
| 2403 |
Plot_yz.YLabel := 'Vapor Compositions'; |
| 2404 |
Plot_yz.XLabel := 'transformed stage location (z)'; |
| 2405 |
Plot_yz.Ylow := 0; |
| 2406 |
Plot_yz.Yhigh := 1; |
| 2407 |
|
| 2408 |
Plot_ys.title := 'Vapor Compositions vs. s'; |
| 2409 |
Plot_ys.YLabel := 'Vapor Compositions'; |
| 2410 |
Plot_ys.XLabel := 'stage location (s)'; |
| 2411 |
Plot_ys.Ylow := 0; |
| 2412 |
Plot_ys.Yhigh := 1; |
| 2413 |
|
| 2414 |
FOR i IN components DO |
| 2415 |
Plot_xz.curve[i].legend := i; |
| 2416 |
Plot_xs.curve[i].legend := i; |
| 2417 |
Plot_yz.curve[i].legend := i; |
| 2418 |
Plot_ys.curve[i].legend := i; |
| 2419 |
END FOR; |
| 2420 |
|
| 2421 |
IF (ncomps == 3) THEN |
| 2422 |
RUN T_Liq_diagram_e.default_self; |
| 2423 |
RUN T_Vap_diagram_e.default_self; |
| 2424 |
END IF; |
| 2425 |
|
| 2426 |
END default_self; |
| 2427 |
METHOD default_all; |
| 2428 |
RUN distillate.default_all; |
| 2429 |
RUN feed.default_all; |
| 2430 |
RUN bottoms.default_all; |
| 2431 |
RUN default_self; |
| 2432 |
END default_all; |
| 2433 |
|
| 2434 |
METHOD scale_self; |
| 2435 |
stot.nominal := stot; |
| 2436 |
coll_stack[1..nfeeds+1].stot.upper_bound := |
| 2437 |
stot.upper_bound/(nfeeds+1) + 1.0; |
| 2438 |
RUN condenser.scale_self; |
| 2439 |
RUN coll_stack[1..nfeeds+1].scale_self; |
| 2440 |
RUN feed_tray.scale_self; |
| 2441 |
RUN reboiler.scale_self; |
| 2442 |
FOR i IN components DO |
| 2443 |
xsi[i].nominal := xsi[i]; |
| 2444 |
xsi_set[i].nominal := xsi_set[i]; |
| 2445 |
xsi_diff[i].nominal := xsi_diff[i]; |
| 2446 |
END FOR; |
| 2447 |
END scale_self; |
| 2448 |
METHOD scale_all; |
| 2449 |
RUN scale_self; |
| 2450 |
RUN distillate.scale_all; |
| 2451 |
RUN feed.scale_all; |
| 2452 |
RUN bottoms.scale_all; |
| 2453 |
END scale_all; |
| 2454 |
METHOD bound_self; |
| 2455 |
stot.lower_bound := 4; |
| 2456 |
stot.upper_bound := 100; |
| 2457 |
RUN condenser.bound_self; |
| 2458 |
RUN coll_stack[1..nfeeds+1].bound_self; |
| 2459 |
RUN feed_tray.bound_self; |
| 2460 |
RUN reboiler.bound_self; |
| 2461 |
END bound_self; |
| 2462 |
METHOD bound_all; |
| 2463 |
RUN bound_self; |
| 2464 |
RUN distillate.bound_all; |
| 2465 |
RUN feed.bound_all; |
| 2466 |
RUN bottoms.bound_all; |
| 2467 |
END bound_all; |
| 2468 |
METHOD check_self; |
| 2469 |
END check_self; |
| 2470 |
METHOD check_all; |
| 2471 |
RUN check_self; |
| 2472 |
RUN distillate.check_all; |
| 2473 |
RUN feed.check_all; |
| 2474 |
RUN bottoms.check_all; |
| 2475 |
END check_all; |
| 2476 |
|
| 2477 |
METHOD values; |
| 2478 |
RUN coll_stack[1..nfeeds+1].values; |
| 2479 |
END values; |
| 2480 |
|
| 2481 |
METHOD heat_balance; |
| 2482 |
RUN coll_stack[1..nfeeds+1].heat_balance; |
| 2483 |
feed_tray.q.fixed := FALSE; |
| 2484 |
feed_tray.Qin.fixed := TRUE; |
| 2485 |
hb_on := TRUE; |
| 2486 |
END heat_balance; |
| 2487 |
METHOD CMO; |
| 2488 |
RUN coll_stack[1..nfeeds+1].CMO; |
| 2489 |
feed_tray[1..nfeeds].q.fixed := TRUE; |
| 2490 |
feed_tray[1..nfeeds].Qin.fixed := FALSE; |
| 2491 |
hb_on := FALSE; |
| 2492 |
END CMO; |
| 2493 |
METHOD reduce_Q; |
| 2494 |
FOR i IN [1..nfeeds+1] DO |
| 2495 |
FOR j IN [1..coll_stack[i].ncolls] DO |
| 2496 |
coll_stack[i].coll[j].Qtot := |
| 2497 |
coll_stack[i].coll[j].Qtot*reduce; |
| 2498 |
FOR k IN [1..coll_stack[i].coll[j].ntrays] DO |
| 2499 |
coll_stack[i].coll[j].Qin[k] := |
| 2500 |
coll_stack[i].coll[j].Qin[k]*reduce; |
| 2501 |
coll_stack[i].coll[j].tray[k].Qin := |
| 2502 |
coll_stack[i].coll[j].tray[k].Qin*reduce; |
| 2503 |
END FOR; |
| 2504 |
END FOR; |
| 2505 |
END FOR; |
| 2506 |
feed_tray.Qin := |
| 2507 |
feed_tray.Qin*reduce; |
| 2508 |
END reduce_Q; |
| 2509 |
METHOD zero_Q; |
| 2510 |
reduce := 0; |
| 2511 |
RUN reduce_Q; |
| 2512 |
END zero_Q; |
| 2513 |
|
| 2514 |
METHOD specify_feed; |
| 2515 |
RUN feed.ClearAll; |
| 2516 |
IF (feed.pd.phase_indicator == 'VL') THEN |
| 2517 |
feed.equilibrated := equilibrated; |
| 2518 |
RUN feed.specify; |
| 2519 |
IF (equilibrated == TRUE) THEN |
| 2520 |
IF (saturated_liquid_feed == TRUE) THEN |
| 2521 |
saturated_vapor_feed := FALSE; |
| 2522 |
feed.T.fixed := FALSE; |
| 2523 |
feed.state.phase_fraction['vapor'].fixed := TRUE; |
| 2524 |
feed.state.phase_fraction['vapor'] := 0.0; |
| 2525 |
END IF; |
| 2526 |
IF (saturated_vapor_feed == TRUE) THEN |
| 2527 |
feed.T.fixed := FALSE; |
| 2528 |
feed.state.phase_fraction['vapor'].fixed := TRUE; |
| 2529 |
feed.state.phase_fraction['vapor'] := 1.0; |
| 2530 |
END IF; |
| 2531 |
END IF; |
| 2532 |
ELSE |
| 2533 |
RUN feed.specify; |
| 2534 |
END IF; |
| 2535 |
END specify_feed; |
| 2536 |
METHOD seqmod; |
| 2537 |
RUN condenser.seqmod; |
| 2538 |
RUN coll_stack[1..nfeeds+1].seqmod; |
| 2539 |
RUN feed_tray.seqmod; |
| 2540 |
RUN reboiler.seqmod; |
| 2541 |
OverallMB[components].included := FALSE; |
| 2542 |
reboiler.reboil_ratio.fixed := FALSE; |
| 2543 |
condenser.distillate.flow.fixed := TRUE; |
| 2544 |
xsi_set[components].fixed := TRUE; |
| 2545 |
IF (hb_on) THEN |
| 2546 |
RUN heat_balance; |
| 2547 |
END IF; |
| 2548 |
recovery.included := FALSE; |
| 2549 |
sep_opt[components][components].included := FALSE; |
| 2550 |
z_space.fixed := TRUE; |
| 2551 |
s_shift.fixed := TRUE; |
| 2552 |
z_shift.fixed := TRUE; |
| 2553 |
END seqmod; |
| 2554 |
|
| 2555 |
METHOD seqmod_massbal; |
| 2556 |
objmult.fixed := TRUE; |
| 2557 |
optime.fixed := TRUE; |
| 2558 |
hb_on := FALSE; |
| 2559 |
equilibrated := FALSE; |
| 2560 |
|
| 2561 |
RUN cost_calc.seqmod; |
| 2562 |
RUN condenser.seqmod; |
| 2563 |
RUN coll_stack[1..nfeeds+1].seqmod_massbal; |
| 2564 |
RUN feed_tray.seqmod_massbal; |
| 2565 |
RUN reboiler.seqmod; |
| 2566 |
OverallMB[components].included := FALSE; |
| 2567 |
reboiler.reboil_ratio.fixed := FALSE; |
| 2568 |
condenser.distillate.flow.fixed := TRUE; |
| 2569 |
xsi_set[components].fixed := TRUE; |
| 2570 |
recovery.included := FALSE; |
| 2571 |
sep_opt[components][components].included := FALSE; |
| 2572 |
|
| 2573 |
z_space.fixed := TRUE; |
| 2574 |
s_shift.fixed := TRUE; |
| 2575 |
z_shift.fixed := TRUE; |
| 2576 |
|
| 2577 |
END seqmod_massbal; |
| 2578 |
|
| 2579 |
METHOD seqmod_fullthermo; |
| 2580 |
objmult.fixed := TRUE; |
| 2581 |
optime.fixed := TRUE; |
| 2582 |
hb_on := FALSE; |
| 2583 |
equilibrated := TRUE; |
| 2584 |
|
| 2585 |
RUN cost_calc.seqmod; |
| 2586 |
RUN condenser.seqmod; |
| 2587 |
RUN coll_stack[1..nfeeds+1].seqmod_fullthermo; |
| 2588 |
RUN feed_tray.seqmod_fullthermo; |
| 2589 |
RUN reboiler.seqmod; |
| 2590 |
OverallMB[components].included := FALSE; |
| 2591 |
reboiler.reboil_ratio.fixed := FALSE; |
| 2592 |
condenser.distillate.flow.fixed := TRUE; |
| 2593 |
xsi_set[components].fixed := TRUE; |
| 2594 |
recovery.included := FALSE; |
| 2595 |
sep_opt[components][components].included := FALSE; |
| 2596 |
|
| 2597 |
z_space.fixed := TRUE; |
| 2598 |
s_shift.fixed := TRUE; |
| 2599 |
z_shift.fixed := TRUE; |
| 2600 |
|
| 2601 |
END seqmod_fullthermo; |
| 2602 |
|
| 2603 |
METHOD seqmod_adiabatic; |
| 2604 |
objmult.fixed := TRUE; |
| 2605 |
optime.fixed := TRUE; |
| 2606 |
hb_on := TRUE; |
| 2607 |
equilibrated := TRUE; |
| 2608 |
RUN seqmod_fullthermo; |
| 2609 |
RUN heat_balance; |
| 2610 |
|
| 2611 |
z_space.fixed := TRUE; |
| 2612 |
s_shift.fixed := TRUE; |
| 2613 |
z_shift.fixed := TRUE; |
| 2614 |
|
| 2615 |
END seqmod_adiabatic; |
| 2616 |
|
| 2617 |
METHOD specify; |
| 2618 |
IF (hb_on AND NOT(equilibrated)) THEN |
| 2619 |
equilibrated := TRUE; |
| 2620 |
END IF; |
| 2621 |
IF (hb_on AND equilibrated) THEN |
| 2622 |
RUN seqmod_adiabatic; |
| 2623 |
END IF; |
| 2624 |
IF (NOT(hb_on) AND equilibrated) THEN |
| 2625 |
RUN seqmod_fullthermo; |
| 2626 |
END IF; |
| 2627 |
IF (NOT(hb_on) AND NOT(equilibrated)) THEN |
| 2628 |
RUN seqmod_massbal; |
| 2629 |
END IF; |
| 2630 |
RUN specify_feed; |
| 2631 |
|
| 2632 |
condenser.liqout.T.fixed := FALSE; |
| 2633 |
condenser.liqout.P.fixed := FALSE; |
| 2634 |
END specify; |
| 2635 |
METHOD reset; |
| 2636 |
RUN ClearAll; |
| 2637 |
RUN specify; |
| 2638 |
END reset; |
| 2639 |
METHOD standard_poly; |
| 2640 |
hat_on := FALSE; |
| 2641 |
END standard_poly; |
| 2642 |
METHOD trans_poly; |
| 2643 |
hat_on := TRUE; |
| 2644 |
END trans_poly; |
| 2645 |
METHOD z_based_poly; |
| 2646 |
z_on := TRUE; |
| 2647 |
END z_based_poly; |
| 2648 |
METHOD s_based_poly; |
| 2649 |
z_on := FALSE; |
| 2650 |
END s_based_poly; |
| 2651 |
METHOD propagate_feed_values; |
| 2652 |
FOR i IN components DO |
| 2653 |
FOR k IN [1..nfeeds+1] DO |
| 2654 |
FOR j IN [1..coll_stack[k].ncolls] DO |
| 2655 |
coll_stack[k].coll[j].tray[1..coll_stack[k] |
| 2656 |
.coll[j].ntrays].alpha[i] |
| 2657 |
:= feed_tray.alpha[i]; |
| 2658 |
END FOR; |
| 2659 |
END FOR; |
| 2660 |
reboiler.alpha[i] := |
| 2661 |
feed_tray.alpha[i]; |
| 2662 |
END FOR; |
| 2663 |
END propagate_feed_values; |
| 2664 |
METHOD initialize_feed_tray_state; |
| 2665 |
FOR i IN components DO |
| 2666 |
feed_tray.state.y[i] := |
| 2667 |
feed.f[i]/SUM[feed.f[j] | j IN components]; |
| 2668 |
END FOR; |
| 2669 |
feed_tray.state.T := feed.T; |
| 2670 |
feed_tray.state.P := feed.P; |
| 2671 |
END initialize_feed_tray_state; |
| 2672 |
|
| 2673 |
METHOD overallMB; |
| 2674 |
OverallMB[components].included := TRUE; |
| 2675 |
feed_tray[1].totfeedflow[components].included := FALSE; |
| 2676 |
END overallMB; |
| 2677 |
|
| 2678 |
METHOD reset_to_massbal; |
| 2679 |
hb_on := FALSE; |
| 2680 |
equilibrated := FALSE; |
| 2681 |
RUN reset; |
| 2682 |
END reset_to_massbal; |
| 2683 |
|
| 2684 |
METHOD reset_to_fullthermo; |
| 2685 |
hb_on := FALSE; |
| 2686 |
equilibrated := TRUE; |
| 2687 |
RUN reset; |
| 2688 |
distillate.T.fixed := FALSE; |
| 2689 |
distillate.state.phase_fraction['vapor'].fixed := TRUE; |
| 2690 |
distillate.state.phase_fraction['vapor'] := 0; |
| 2691 |
END reset_to_fullthermo; |
| 2692 |
|
| 2693 |
METHOD reset_to_adiabatic; |
| 2694 |
hb_on := TRUE; |
| 2695 |
equilibrated := TRUE; |
| 2696 |
RUN reset; |
| 2697 |
distillate.T.fixed := FALSE; |
| 2698 |
distillate.state.phase_fraction['vapor'].fixed := TRUE; |
| 2699 |
distillate.state.phase_fraction['vapor'] := 0; |
| 2700 |
END reset_to_adiabatic; |
| 2701 |
|
| 2702 |
METHOD equipment_bounds; |
| 2703 |
RUN cost_calc.equipment_bounds; |
| 2704 |
END equipment_bounds; |
| 2705 |
|
| 2706 |
METHOD optimization_DOF; |
| 2707 |
distillate.flow.fixed := FALSE; |
| 2708 |
condenser.reflux_ratio.fixed := FALSE; |
| 2709 |
s_stack[1..2].fixed := FALSE; |
| 2710 |
END optimization_DOF; |
| 2711 |
END simple_coll_column; |
| 2712 |
|
| 2713 |
|
| 2714 |
MODEL test_coll_column(); |
| 2715 |
cd IS_A components_data( |
| 2716 |
['acetone','benzene','chloroform'],'chloroform' |
| 2717 |
); |
| 2718 |
pdVL IS_A phases_data('VL','Pitzer_vapor_mixture', |
| 2719 |
'Wilson_liquid_mixture','none'); |
| 2720 |
pdV IS_A phases_data('V','Pitzer_vapor_mixture','none','none'); |
| 2721 |
pdL IS_A phases_data('L','none','Wilson_liquid_mixture','none'); |
| 2722 |
|
| 2723 |
|
| 2724 |
Feed_equil, Equilibrated IS_A start_false; |
| 2725 |
Feed IS_A stream(cd, pdVL, Feed_equil); |
| 2726 |
Distillate IS_A stream(cd, pdVL, Equilibrated); |
| 2727 |
Bottoms IS_A stream(cd, pdL, Equilibrated); |
| 2728 |
|
| 2729 |
ntrays IS_A integer_constant; |
| 2730 |
ntrays :== 2; |
| 2731 |
|
| 2732 |
reduce IS_A fraction; |
| 2733 |
|
| 2734 |
z_on, hat_on, hb_on IS_A start_false; |
| 2735 |
|
| 2736 |
Column IS_A simple_coll_column( |
| 2737 |
ntrays, |
| 2738 |
pdVL, |
| 2739 |
Distillate, |
| 2740 |
Feed, |
| 2741 |
Bottoms, |
| 2742 |
Equilibrated, |
| 2743 |
reduce, |
| 2744 |
z_on, |
| 2745 |
hat_on, |
| 2746 |
hb_on |
| 2747 |
); |
| 2748 |
boundwidth IS_A bound_width; |
| 2749 |
|
| 2750 |
METHODS |
| 2751 |
|
| 2752 |
METHOD default_self; |
| 2753 |
RUN Feed.default_self; |
| 2754 |
RUN Distillate.default_self; |
| 2755 |
RUN Bottoms.default_self; |
| 2756 |
RUN Column.default_self; |
| 2757 |
boundwidth := 100; |
| 2758 |
END default_self; |
| 2759 |
|
| 2760 |
METHOD check_self; |
| 2761 |
RUN Feed.check_self; |
| 2762 |
RUN Distillate.check_self; |
| 2763 |
RUN Bottoms.check_self; |
| 2764 |
RUN Column.check_self; |
| 2765 |
END check_self; |
| 2766 |
|
| 2767 |
METHOD scale_self; |
| 2768 |
RUN Feed.scale_self; |
| 2769 |
RUN Distillate.scale_self; |
| 2770 |
RUN Bottoms.scale_self; |
| 2771 |
RUN Column.scale_self; |
| 2772 |
END scale_self; |
| 2773 |
|
| 2774 |
METHOD bound_self; |
| 2775 |
Column.boundwidth := boundwidth; |
| 2776 |
Profile.boundwidth := boundwidth; |
| 2777 |
Feed.boundwidth := boundwidth; |
| 2778 |
Distillate.boundwidth := boundwidth; |
| 2779 |
Bottoms.boundwidth := boundwidth; |
| 2780 |
RUN Feed.bound_self; |
| 2781 |
RUN Distillate.bound_self; |
| 2782 |
RUN Bottoms.bound_self; |
| 2783 |
RUN Column.bound_self; |
| 2784 |
END bound_self; |
| 2785 |
|
| 2786 |
METHOD bound_all; |
| 2787 |
RUN bound_self; |
| 2788 |
END bound_all; |
| 2789 |
|
| 2790 |
METHOD scale_all; |
| 2791 |
RUN scale_self; |
| 2792 |
END scale_all; |
| 2793 |
|
| 2794 |
METHOD check_all; |
| 2795 |
RUN check_self; |
| 2796 |
END check_all; |
| 2797 |
|
| 2798 |
METHOD default_all; |
| 2799 |
RUN default_self; |
| 2800 |
END default_all; |
| 2801 |
|
| 2802 |
METHOD values; |
| 2803 |
Column.condenser.reflux_ratio := 2.0; |
| 2804 |
Column.s_stack[1] := 10; |
| 2805 |
Column.s_stack[2] := 10; |
| 2806 |
Feed.T := 298 {K}; |
| 2807 |
Feed.P := 1{atm}; |
| 2808 |
Feed.f['acetone'] := 3.6 {mole/s}; |
| 2809 |
Feed.f['benzene'] := 4 {mole/s}; |
| 2810 |
Feed.f['chloroform'] := 2.4 {mole/s}; |
| 2811 |
Distillate.flow := 6.0 {mole/s}; |
| 2812 |
|
| 2813 |
RUN Column.initialize_feed_tray_state; |
| 2814 |
END values; |
| 2815 |
|
| 2816 |
END test_coll_column; |
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