| 1 |
REQUIRE "atoms.a4l"; |
| 2 |
(* => atoms.a4l, measures.a4l, system.a4l, basemodel.a4l *) |
| 3 |
PROVIDE "cost_column.a4l"; |
| 4 |
|
| 5 |
(* |
| 6 |
* cost_column.a4l |
| 7 |
* by Robert S. Huss |
| 8 |
* Part of the ASCEND Library |
| 9 |
* $Date: 1998/06/17 18:56:15 $ |
| 10 |
* $Revision: 1.6 $ |
| 11 |
* $Author: mthomas $ |
| 12 |
* $Source: /afs/cs.cmu.edu/project/ascend/Repository/models/cost_column.a4l,v $ |
| 13 |
* |
| 14 |
* This file is part of the ASCEND Modeling Library. |
| 15 |
* |
| 16 |
* Copyright (C) 1994, 1997 Carnegie Mellon University |
| 17 |
* |
| 18 |
* The ASCEND Modeling Library is free software; you can redistribute |
| 19 |
* it and/or modify it under the terms of the GNU General Public |
| 20 |
* License as published by the Free Software Foundation; either |
| 21 |
* version 2 of the License, or (at your option) any later version. |
| 22 |
* |
| 23 |
* The ASCEND Modeling Library is distributed in hope that it |
| 24 |
* will be useful, but WITHOUT ANY WARRANTY; without even the implied |
| 25 |
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
| 26 |
* See the GNU General Public License for more details. |
| 27 |
* |
| 28 |
* You should have received a copy of the GNU General Public License |
| 29 |
* along with the program; if not, write to the Free Software |
| 30 |
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139 USA. Check |
| 31 |
* the file named COPYING. |
| 32 |
*) |
| 33 |
|
| 34 |
(* |
| 35 |
C O S T _ C O L U M N . A 4 L |
| 36 |
----------------------------- |
| 37 |
|
| 38 |
AUTHOR: Robert S. Huss |
| 39 |
|
| 40 |
DATES: 5/95 - First Public Release |
| 41 |
4/96 - Modified for using constant instance types |
| 42 |
6/97 - Updated to use parameterized types |
| 43 |
|
| 44 |
CONTENTS: Collocation models for distillation modeling. |
| 45 |
|
| 46 |
|
| 47 |
|
| 48 |
|
| 49 |
REQUIRES: "system.a4l" |
| 50 |
"atoms.a4l" |
| 51 |
"components.a4l" |
| 52 |
"thermodynamics.a4l" |
| 53 |
"plot.a4l" |
| 54 |
"stream.a4l" |
| 55 |
"flash.a4l" |
| 56 |
|
| 57 |
*) |
| 58 |
|
| 59 |
MODEL cost_calc( |
| 60 |
column_cost WILL_BE cost_per_time; (* cost/time: capital and operating |
| 61 |
* cost OF column *) |
| 62 |
Tc WILL_BE temperature; (* temperature of condenser *) |
| 63 |
QC WILL_BE energy_rate; (* heat duty of condenser *) |
| 64 |
QR WILL_BE energy_rate; (* heat duty of reboiler *) |
| 65 |
nsections WILL_BE integer_constant; (* number OF column sections *) |
| 66 |
V[1..nsections] WILL_BE molar_rate; (* molar vapor flow rate out |
| 67 |
* of section *) |
| 68 |
V_bar[1..nsections] WILL_BE molar_volume; (* corresponding molar vapor |
| 69 |
* volume *) |
| 70 |
stot WILL_BE factor; (* total number of trays in column *) |
| 71 |
M_g WILL_BE molar_mass; (* average molar mass of vapor *) |
| 72 |
Feedtot WILL_BE molar_rate; (* molar rate OF feed *) |
| 73 |
); |
| 74 |
|
| 75 |
Afrac IS_A real; (* fraction of area taken by tray *) |
| 76 |
|
| 77 |
Fp1, |
| 78 |
Fm1 IS_A real; (* material factors for column p 574*) |
| 79 |
Fd2, |
| 80 |
Fp2, |
| 81 |
Fm2 IS_A real; (* material factors for exchangers p 572*) |
| 82 |
M_S IS_A real; |
| 83 |
Tin IS_A real; (* in temperature of cooling water *) |
| 84 |
Uc IS_A real; (* heat transfer coefficient for condenser *) |
| 85 |
CpW IS_A real; (* heat capacity of cooling water *) |
| 86 |
Hs IS_A real; (* heat of vaporization of steam *) |
| 87 |
Cw IS_A real; (* price of cooling water *) |
| 88 |
Cs IS_A real; (* price of steam *) |
| 89 |
Tray_height IS_A real; (* height of each tray *) |
| 90 |
|
| 91 |
|
| 92 |
cost IS_A factor; |
| 93 |
|
| 94 |
condenser_cost, |
| 95 |
condenser_min, |
| 96 |
condenser_max, |
| 97 |
reboiler_cost, |
| 98 |
reboiler_min, |
| 99 |
reboiler_max, |
| 100 |
water_cost, |
| 101 |
water_min, |
| 102 |
water_max, |
| 103 |
steam_cost, |
| 104 |
steam_min, |
| 105 |
steam_max IS_A cost_per_time; |
| 106 |
boundwidth IS_A bound_width; |
| 107 |
Area IS_A area; (* total cross-sectional area of column *) |
| 108 |
D IS_A distance; (* diameter of column *) |
| 109 |
H IS_A distance; (* height of column *) |
| 110 |
pi IS_A circle_constant; |
| 111 |
DT_C IS_A temperature; (* change in cooling water temperature *) |
| 112 |
Ac, |
| 113 |
Ar, |
| 114 |
Acmin, |
| 115 |
Acmax, |
| 116 |
Armin, |
| 117 |
Armax IS_A area; (* area of condenser and reboiler *) |
| 118 |
Tout IS_A temperature; |
| 119 |
Fc1 IS_A factor; |
| 120 |
Fc2 IS_A factor; |
| 121 |
Feedmax, |
| 122 |
Feedmin IS_A molar_rate; |
| 123 |
F[1..nsections], |
| 124 |
Fmax, |
| 125 |
Fmin IS_A factor; (* flooding factor *) |
| 126 |
LMT IS_A factor; (* log mean temperature difference in condenser *) |
| 127 |
|
| 128 |
|
| 129 |
FOR j IN [1..nsections] CREATE |
| 130 |
Area = 1{ft^2}*V[j]*1{hr/lb_mole} |
| 131 |
*sqrt(M_g*1{lb_mole^2/lbm/ft^3} |
| 132 |
*V_bar[j])/Afrac/F[j]/3600; |
| 133 |
END FOR; |
| 134 |
|
| 135 |
F[1]*Feedmin = Fmin*Feedtot; |
| 136 |
F[1]*Feedmax = Fmax*Feedtot; |
| 137 |
|
| 138 |
Acmin*F[1] = Fmin*Ac; |
| 139 |
Acmax*F[1] = Fmax*Ac; |
| 140 |
Armin*F[1] = Fmin*Ar; |
| 141 |
Armax*F[1] = Fmax*Ar; |
| 142 |
|
| 143 |
|
| 144 |
|
| 145 |
D = (4*Area/pi)^0.5; |
| 146 |
|
| 147 |
H = Tray_height*1.15*stot; |
| 148 |
|
| 149 |
Fc1 = Fm1*Fp1; |
| 150 |
Fc2 = (Fd2+Fp2)*Fm1; |
| 151 |
|
| 152 |
DT_C = (Tout - Tin); |
| 153 |
|
| 154 |
LMT = ln((Tc-Tin)/(Tc-Tout)); |
| 155 |
Ac = -QC*LMT/((Tout-Tin)*Uc); |
| 156 |
Ar = QR/11250{BTU/hr/ft^2}; |
| 157 |
Tout IS_REFINED_TO temperature; |
| 158 |
Tout = Tc - 5{K}; |
| 159 |
|
| 160 |
c1: column_cost = (M_S/280/3{yr})*(120*(D/1{ft}) |
| 161 |
*((H/1{ft})^0.8))*(2.18 + Fc1); |
| 162 |
c2: condenser_cost = (M_S/280/3{yr})*(101.3) |
| 163 |
*(2.29+Fc2)*((Ac/1{ft^2})^0.65); |
| 164 |
c3: reboiler_cost = (M_S/280/3{yr})*(101.3) |
| 165 |
*(2.29+Fc2)*((Ar/1{ft^2})^0.65); |
| 166 |
c4: water_cost = Cw*(-QC)*1{ml/g}*18{g/mole}/(CpW*DT_C); |
| 167 |
c5: steam_cost = Cs*QR/Hs; |
| 168 |
|
| 169 |
|
| 170 |
condenser_min = (M_S/280/3{yr})*(101.3)*(2.29+Fc2)*((Acmin/1{ft^2})^0.65); |
| 171 |
condenser_max = (M_S/280/3{yr})*(101.3)*(2.29+Fc2)*((Acmax/1{ft^2})^0.65); |
| 172 |
reboiler_min = (M_S/280/3{yr})*(101.3)*(2.29+Fc2)*((Armin/1{ft^2})^0.65); |
| 173 |
reboiler_max = (M_S/280/3{yr})*(101.3)*(2.29+Fc2)*((Armax/1{ft^2})^0.65); |
| 174 |
water_min*F[1] = Fmin*water_cost; |
| 175 |
water_max*F[1] = Fmax*water_cost; |
| 176 |
steam_min*F[1] = Fmin*steam_cost; |
| 177 |
steam_max*F[1] = Fmax*steam_cost; |
| 178 |
|
| 179 |
|
| 180 |
|
| 181 |
|
| 182 |
c_tot1: cost*1.0{USD/yr} = column_cost + condenser_cost |
| 183 |
+ reboiler_cost + water_cost + steam_cost; |
| 184 |
|
| 185 |
|
| 186 |
METHODS |
| 187 |
METHOD default_self; |
| 188 |
F[1..nsections] := 1.51{}; |
| 189 |
Fmax := 2.5; |
| 190 |
Fmin := 0.75; |
| 191 |
|
| 192 |
Afrac := 0.88{}; |
| 193 |
Fp1 := 1.0{}; |
| 194 |
Fm1 := 1.0{}; |
| 195 |
Fd2 := 1.0{}; |
| 196 |
Fp2 := 0.0{}; |
| 197 |
Fm2 := 1.0{}; |
| 198 |
|
| 199 |
M_S := 900{USD}; |
| 200 |
|
| 201 |
Tin := 459.67{R} + 70{R}; |
| 202 |
Tout := 459.67{R} + 90{R}; |
| 203 |
Uc := 100{BTU/hr/ft^2/R}; |
| 204 |
CpW := 1{cal/mole/K}; |
| 205 |
Hs := 933{BTU/lbm}; |
| 206 |
Cw := 0.03{USD}/1000{gallon}; |
| 207 |
Cs := 2.5{USD}/1000{lbm}; |
| 208 |
Tray_height := 2.0{ft}; |
| 209 |
|
| 210 |
|
| 211 |
V_bar[1..nsections] := 24{liter/mol}; |
| 212 |
M_g := 70{g/mol}; |
| 213 |
Tc := 350{K}; |
| 214 |
QC := -30{kW}; |
| 215 |
QR := 30{kW}; |
| 216 |
END default_self; |
| 217 |
METHOD default_all; |
| 218 |
RUN default_self; |
| 219 |
END default_all; |
| 220 |
|
| 221 |
METHOD check_self; |
| 222 |
END check_self; |
| 223 |
|
| 224 |
METHOD scale_self; |
| 225 |
END scale_self; |
| 226 |
|
| 227 |
METHOD bound_self; |
| 228 |
END bound_self; |
| 229 |
|
| 230 |
METHOD bound_all; |
| 231 |
RUN bound_self; |
| 232 |
END bound_all; |
| 233 |
|
| 234 |
METHOD scale_all; |
| 235 |
RUN scale_self; |
| 236 |
END scale_all; |
| 237 |
|
| 238 |
METHOD check_all; |
| 239 |
RUN check_self; |
| 240 |
END check_all; |
| 241 |
|
| 242 |
METHOD clear; |
| 243 |
cost.fixed := FALSE; |
| 244 |
column_cost.fixed := FALSE; |
| 245 |
condenser_cost.fixed := FALSE; |
| 246 |
reboiler_cost.fixed := FALSE; |
| 247 |
water_cost.fixed := FALSE; |
| 248 |
steam_cost.fixed := FALSE; |
| 249 |
Area.fixed := FALSE; |
| 250 |
V[1..nsections].fixed := FALSE; |
| 251 |
V_bar[1..nsections].fixed := FALSE; |
| 252 |
M_g.fixed := FALSE; |
| 253 |
D.fixed := FALSE; |
| 254 |
H.fixed := FALSE; |
| 255 |
DT_C.fixed := FALSE; |
| 256 |
QC.fixed := FALSE; |
| 257 |
QR.fixed := FALSE; |
| 258 |
F[1..nsections].fixed := FALSE; |
| 259 |
Fmax.fixed := FALSE; |
| 260 |
Fmin.fixed := FALSE; |
| 261 |
Feedtot.fixed := FALSE; |
| 262 |
Feedmin.fixed := FALSE; |
| 263 |
Feedmax.fixed := FALSE; |
| 264 |
Fc1.fixed := FALSE; |
| 265 |
Fc2.fixed := FALSE; |
| 266 |
Tc.fixed := FALSE; |
| 267 |
stot.fixed := FALSE; |
| 268 |
condenser_min.fixed := FALSE; |
| 269 |
condenser_max.fixed := FALSE; |
| 270 |
reboiler_min.fixed := FALSE; |
| 271 |
reboiler_max.fixed := FALSE; |
| 272 |
water_min.fixed := FALSE; |
| 273 |
water_max.fixed := FALSE; |
| 274 |
steam_min.fixed := FALSE; |
| 275 |
steam_max.fixed := FALSE; |
| 276 |
Acmin.fixed := FALSE; |
| 277 |
Acmax.fixed := FALSE; |
| 278 |
Armin.fixed := FALSE; |
| 279 |
Armax.fixed := FALSE; |
| 280 |
END clear; |
| 281 |
METHOD seqmod; |
| 282 |
F[1].fixed := TRUE; |
| 283 |
Fmin.fixed := TRUE; |
| 284 |
Fmax.fixed := TRUE; |
| 285 |
END seqmod; |
| 286 |
METHOD specify; |
| 287 |
Tc.fixed := TRUE; |
| 288 |
M_g.fixed := TRUE; |
| 289 |
QC.fixed := TRUE; |
| 290 |
QR.fixed := TRUE; |
| 291 |
V[1..nsections].fixed := TRUE; |
| 292 |
V_bar[1..nsections].fixed := TRUE; |
| 293 |
stot.fixed := TRUE; |
| 294 |
END specify; |
| 295 |
METHOD reset; |
| 296 |
RUN clear; |
| 297 |
RUN specify; |
| 298 |
END reset; |
| 299 |
METHOD scale; |
| 300 |
RUN col.scale; |
| 301 |
column_cost.nominal := column_cost; |
| 302 |
condenser_cost.nominal := condenser_cost; |
| 303 |
condenser_min.nominal := condenser_min; |
| 304 |
condenser_max.nominal := condenser_max; |
| 305 |
reboiler_cost.nominal := reboiler_cost; |
| 306 |
reboiler_min.nominal := reboiler_min; |
| 307 |
reboiler_max.nominal := reboiler_max; |
| 308 |
water_cost.nominal := water_cost; |
| 309 |
water_min.nominal := water_min; |
| 310 |
water_max.nominal := water_max; |
| 311 |
steam_cost.nominal := steam_cost; |
| 312 |
steam_min.nominal := steam_min; |
| 313 |
steam_max.nominal := steam_max; |
| 314 |
|
| 315 |
column_cost.upper_bound := column_cost + |
| 316 |
boundwidth*column_cost.nominal; |
| 317 |
condenser_cost.upper_bound := condenser_cost + |
| 318 |
boundwidth*condenser_cost.nominal; |
| 319 |
condenser_min.upper_bound := condenser_min + |
| 320 |
boundwidth*condenser_min.nominal; |
| 321 |
condenser_max.upper_bound := condenser_max + |
| 322 |
boundwidth*condenser_max.nominal; |
| 323 |
reboiler_cost.upper_bound := reboiler_cost + |
| 324 |
boundwidth*reboiler_cost.nominal; |
| 325 |
reboiler_min.upper_bound := reboiler_min + |
| 326 |
boundwidth*reboiler_min.nominal; |
| 327 |
reboiler_max.upper_bound := reboiler_max + |
| 328 |
boundwidth*reboiler_max.nominal; |
| 329 |
water_cost.upper_bound := water_cost + |
| 330 |
boundwidth*water_cost.nominal; |
| 331 |
water_min.upper_bound := water_min + boundwidth*water_min.nominal; |
| 332 |
water_max.upper_bound := water_max + boundwidth*water_max.nominal; |
| 333 |
steam_cost.upper_bound := steam_cost + |
| 334 |
boundwidth*steam_cost.nominal; |
| 335 |
steam_min.upper_bound := steam_min + boundwidth*steam_min.nominal; |
| 336 |
steam_max.upper_bound := steam_max + boundwidth*steam_max.nominal; |
| 337 |
|
| 338 |
FOR j IN [1..nsections] DO |
| 339 |
V[j].nominal := V[j]; |
| 340 |
V_bar[j].nominal := V_bar[j]; |
| 341 |
F[j].nominal := sqrt(sqr(F[j])); |
| 342 |
F[j].lower_bound := F[j] - boundwidth*F[j].nominal; |
| 343 |
V[j].upper_bound := V[j] + boundwidth*V[j]; |
| 344 |
V_bar[j].upper_bound := V_bar[j] + boundwidth*V_bar[j]; |
| 345 |
F[j].upper_bound := F[j] + boundwidth*F[j].nominal; |
| 346 |
END FOR; |
| 347 |
|
| 348 |
|
| 349 |
Area.nominal := Area; |
| 350 |
M_g.nominal := M_g; |
| 351 |
D.nominal := D; |
| 352 |
H.nominal := H; |
| 353 |
DT_C.nominal := DT_C; |
| 354 |
Ac.nominal := Ac; |
| 355 |
Ar.nominal := Ar; |
| 356 |
Acmin.nominal := Acmin; |
| 357 |
Acmax.nominal := Acmax; |
| 358 |
Armin.nominal := Armin; |
| 359 |
Armax.nominal := Armax; |
| 360 |
QC.nominal := sqrt(sqr(QC)); |
| 361 |
QR.nominal := sqrt(sqr(QR)); |
| 362 |
Tc.nominal := Tc; |
| 363 |
Tout.nominal := Tout; |
| 364 |
Fc1.nominal := Fc1; |
| 365 |
Fc2.nominal := Fc2; |
| 366 |
|
| 367 |
Feedtot.nominal := Feedtot; |
| 368 |
Feedmax.nominal := Feedmax; |
| 369 |
Feedmin.nominal := Feedmin; |
| 370 |
Fmax.nominal := Fmax; |
| 371 |
Fmin.nominal := Fmin; |
| 372 |
LMT.nominal := LMT; |
| 373 |
stot.nominal := stot; |
| 374 |
|
| 375 |
Area.upper_bound := Area + boundwidth*Area.nominal; |
| 376 |
M_g.upper_bound := M_g + boundwidth*M_g.nominal; |
| 377 |
D.upper_bound := D + boundwidth*D.nominal; |
| 378 |
H.upper_bound := H + boundwidth*H.nominal; |
| 379 |
DT_C.upper_bound := DT_C + boundwidth*DT_C.nominal; |
| 380 |
Ac.upper_bound := Ac + boundwidth*Ac.nominal; |
| 381 |
Ar.upper_bound := Ar + boundwidth*Ar.nominal; |
| 382 |
Acmin.upper_bound := Acmin + boundwidth*Acmin.nominal; |
| 383 |
Acmax.upper_bound := Acmax + boundwidth*Acmax.nominal; |
| 384 |
Armin.upper_bound := Armin + boundwidth*Armin.nominal; |
| 385 |
Armax.upper_bound := Armax + boundwidth*Armax.nominal; |
| 386 |
QC.upper_bound := QC + boundwidth*QC.nominal; |
| 387 |
QR.upper_bound := QR + boundwidth*QR.nominal; |
| 388 |
Tc.upper_bound := Tc + boundwidth*Tc.nominal; |
| 389 |
Tout.upper_bound := Tout + boundwidth*Tout.nominal; |
| 390 |
Fc1.upper_bound := Fc1 + boundwidth*Fc1.nominal; |
| 391 |
Fc2.upper_bound := Fc2 + boundwidth*Fc2.nominal; |
| 392 |
|
| 393 |
Feedtot.upper_bound := Feedtot + boundwidth*Feedtot.nominal; |
| 394 |
Feedmax.upper_bound := Feedmax + boundwidth*Feedmax.nominal; |
| 395 |
Feedmin.upper_bound := Feedmin + boundwidth*Feedmin.nominal; |
| 396 |
Fmax.upper_bound := Fmax + boundwidth*Fmax.nominal; |
| 397 |
Fmin.upper_bound := Fmin + boundwidth*Fmin.nominal; |
| 398 |
LMT.upper_bound := LMT + boundwidth*LMT.nominal; |
| 399 |
stot.upper_bound := stot + boundwidth*stot.nominal; |
| 400 |
|
| 401 |
|
| 402 |
|
| 403 |
QC.lower_bound := QC - boundwidth*QC.nominal; |
| 404 |
QR.lower_bound := QR - boundwidth*QR.nominal; |
| 405 |
|
| 406 |
Fmax.lower_bound := Fmax + boundwidth*Fmax.nominal; |
| 407 |
Fmin.lower_bound := Fmin + boundwidth*Fmin.nominal; |
| 408 |
END scale; |
| 409 |
END cost_calc; |
| 410 |
(* |
| 411 |
MODEL cost_column; |
| 412 |
|
| 413 |
cost_calc IS_A cost_calc; |
| 414 |
col IS_A td_coll_column; |
| 415 |
|
| 416 |
cost_calc.Tc, |
| 417 |
col.condenser.VLE.T ARE_THE_SAME; |
| 418 |
cost_calc.QC, |
| 419 |
col.condenser.Qin ARE_THE_SAME; |
| 420 |
cost_calc.QR, |
| 421 |
col.reboiler.Qin ARE_THE_SAME; |
| 422 |
|
| 423 |
cost_calc.nsections :== col.nfeeds+1; |
| 424 |
|
| 425 |
|
| 426 |
FOR j IN [1..col.nfeeds+1] CREATE |
| 427 |
cost_calc.V[j], |
| 428 |
col.coll_stack[j].coll[1].tray[1].vapout['vapor'].Ftot ARE_THE_SAME; |
| 429 |
cost_calc.V_bar[j], |
| 430 |
col.coll_stack[j].coll[1].tray[1].vapout['vapor'].state.V ARE_THE_SAME; |
| 431 |
END FOR; |
| 432 |
|
| 433 |
|
| 434 |
|
| 435 |
cost_calc.stot, |
| 436 |
col.stot ARE_THE_SAME; |
| 437 |
|
| 438 |
cost_calc.M_g = SUM[col.feed_tray[1].data[i].mw |
| 439 |
*col.feed_tray[1].vapout['vapor'].state.y[i] |
| 440 |
| i IN col.components]; |
| 441 |
cost_calc.Feedtot, |
| 442 |
col.feed_tray[1].input['feed'].Ftot ARE_THE_SAME; |
| 443 |
|
| 444 |
|
| 445 |
METHODS |
| 446 |
METHOD clear; |
| 447 |
RUN col.clear; |
| 448 |
RUN cost_calc.clear; |
| 449 |
END clear; |
| 450 |
METHOD seqmod; |
| 451 |
RUN col.seqmod; |
| 452 |
RUN cost_calc.seqmod; |
| 453 |
END seqmod; |
| 454 |
METHOD specify; |
| 455 |
RUN seqmod; |
| 456 |
RUN col.feed_tray[1..col.nfeeds].input['feed'].specify; |
| 457 |
END specify; |
| 458 |
METHOD reset; |
| 459 |
RUN clear; |
| 460 |
RUN specify; |
| 461 |
END reset; |
| 462 |
END cost_column; |
| 463 |
|
| 464 |
|
| 465 |
MODEL opt_column REFINES cost_column; |
| 466 |
|
| 467 |
|
| 468 |
|
| 469 |
opt1: MINIMIZE cost_calc.cost; |
| 470 |
|
| 471 |
METHODS |
| 472 |
|
| 473 |
METHOD free; |
| 474 |
col.condenser.reflux_ratio.fixed := FALSE; |
| 475 |
col.condenser.totprod.Ftot.fixed := FALSE; |
| 476 |
col.s_stack[1..2].fixed := FALSE; |
| 477 |
END free; |
| 478 |
END opt_column; |
| 479 |
|
| 480 |
MODEL standard_cost REFINES column_w_plot; |
| 481 |
|
| 482 |
|
| 483 |
|
| 484 |
cc IS_A cost_column; |
| 485 |
|
| 486 |
cc.col, |
| 487 |
col ARE_THE_SAME; |
| 488 |
|
| 489 |
col.nfeeds :== 1; |
| 490 |
col.coll_stack[1..2].ncolls :== 2; |
| 491 |
|
| 492 |
col.coll_stack[1..2].coll[1].z_set.up_down := -1.0; |
| 493 |
col.coll_stack[1..2].coll[2].z_set.up_down := 1.0; |
| 494 |
|
| 495 |
col.coll_stack[1..col.nfeeds+1].coll |
| 496 |
[1..col.coll_stack[1].ncolls].z_set.lgr IS_REFINED_TO lgr_2_points; |
| 497 |
|
| 498 |
col IS_REFINED_TO td_coll_column; |
| 499 |
col.coll_stack[1..2].coll[1..2] IS_REFINED_TO h_coll; |
| 500 |
|
| 501 |
|
| 502 |
METHODS |
| 503 |
METHOD clear; |
| 504 |
RUN col.clear; |
| 505 |
RUN plots.clear; |
| 506 |
END clear; |
| 507 |
METHOD seqmod; |
| 508 |
plots.z_space.fixed := TRUE; |
| 509 |
plots.box_height.fixed := TRUE; |
| 510 |
RUN cc.seqmod; |
| 511 |
END seqmod; |
| 512 |
METHOD specify; |
| 513 |
RUN seqmod; |
| 514 |
RUN col.feed_tray[1..col.nfeeds].input['feed'].specify; |
| 515 |
END specify; |
| 516 |
METHOD values; |
| 517 |
col.feed_tray[1].alpha['c1'] := 1.5; |
| 518 |
col.feed_tray[1].alpha['c2'] := 1.2; |
| 519 |
col.feed_tray[1].alpha['c3'] := 1.0; |
| 520 |
RUN col.propogate_feed; |
| 521 |
FOR j IN [1..2] DO |
| 522 |
col.coll_stack[j].split[1] := 0.5; |
| 523 |
col.coll_stack[j].stot := 7; |
| 524 |
col.coll_stack[j].coll[1].z_set.stot := 3; |
| 525 |
col.coll_stack[j].coll[1..col.coll_stack[1].ncolls].z_set.a := 0.1; |
| 526 |
END FOR; |
| 527 |
col.feed_tray[1].input['feed'].f[col.components] := 3{mol/s}; |
| 528 |
col.feed_tray[1].q := 1.0; |
| 529 |
col.condenser.prodsplit['vapor_product'] := 0.0; |
| 530 |
col.reboiler.prodsplit['vapor_product'] := 0.0; |
| 531 |
col.condenser.totprod.Ftot := 3{mol/s}; |
| 532 |
col.condenser.reflux_ratio := 2.0; |
| 533 |
END values; |
| 534 |
END standard_cost; |
| 535 |
*) |
Parent Directory
| 
Revision Log