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/* This file is created by Hongke Zhu, 7-25-2010. |
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Chemical & Materials Engineering Department, |
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University of Alabama in Huntsville, United States. |
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|
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LITERATURE REFERENCE |
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Lemmon, E.W. and Span, R., |
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"Short Fundamental Equations of State for 20 Industrial Fluids," |
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J. Chem. Eng. Data, 51:785-850, 2006. |
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*/ |
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|
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#include "../helmholtz.h" |
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|
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#define R41_M 34.03292 /* kg/kmol */ |
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#define R41_R (8314.472/R41_M) /* J/kg/K */ |
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#define R41_TSTAR 317.28 /* K */ |
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|
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const IdealData ideal_data_r41 = { |
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-4.8676441160 /* constant */ |
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, 4.2527951258 /* linear */ |
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, R41_TSTAR /* Tstar */ |
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, R41_R /* cp0star */ |
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, 2 /* power terms */ |
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, (const IdealPowTerm[]){ |
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{4.0, 0.0} |
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, {0.00016937, 1.0} |
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} |
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, 2 /* exponential terms */ |
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, (const IdealExpTerm[]){ |
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{5.6936, 1841.0} |
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, {2.9351, 4232.0} |
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} |
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}; |
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|
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const HelmholtzData helmholtz_data_r41 = { |
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"r41" |
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, /* R */ R41_R /* J/kg/K */ |
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, /* M */ R41_M /* kg/kmol */ |
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, /* rho_star */ 9.3*R41_M /* kg/m3(= rho_c for this model) */ |
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, /* T_star */ R41_TSTAR /* K (= T_c for this model) */ |
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|
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, /* T_c */ R41_TSTAR |
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, /* rho_c */ 9.3*R41_M /* kg/m3 */ |
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, /* T_t */ 0 |
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|
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, 0.2004 /* acentric factor */ |
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, &ideal_data_r41 |
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, 12 /* power terms */ |
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, (const HelmholtzPowTerm[]){ |
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/* a_i, t_i, d_i, l_i */ |
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{1.6264, 0.52, 1.0, 0} |
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, {-2.8337, 1.12, 1.0, 0} |
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, {0.0010932, 4.0, 1.0, 0} |
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, {0.037136, 0.03, 3.0, 0} |
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, {0.00018724, 0.63, 7.0, 0} |
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, {-0.22189, 3.4, 1.0, 1} |
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, {0.55021, 2.2, 2.0, 1} |
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, {0.046100, 1.5, 5.0, 1} |
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, {-0.056405, 0.1, 1.0, 2} |
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, {-0.17005, 4.8, 1.0, 2} |
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, {-0.032409, 3.5, 4.0, 2} |
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, {-0.012276, 15.0, 2.0, 3} |
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} |
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, 0 /* gaussian terms */ |
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, 0 |
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, 0 /* critical terms */ |
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, 0 |
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}; |
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|
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/* |
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Test suite. These tests attempt to validate the current code using a few sample figures output by REFPROP 8.0. To compile and run the test: |
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|
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./test.py r41 |
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*/ |
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|
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#ifdef TEST |
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|
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#include "../test.h" |
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#include <math.h> |
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#include <assert.h> |
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#include <stdio.h> |
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|
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const TestData td[]; const unsigned ntd; |
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|
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int main(void){ |
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//return helm_check_u(&helmholtz_data_r41, ntd, td); |
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//return helm_check_dpdT_rho(&helmholtz_data_r41, ntd, td); |
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//return helm_check_dpdrho_T(&helmholtz_data_r41, ntd, td); |
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//return helm_check_dhdT_rho(&helmholtz_data_r41, ntd, td); |
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//return helm_check_dhdrho_T(&helmholtz_data_r41, ntd, td); |
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//return helm_check_dudT_rho(&helmholtz_data_r41, ntd, td); |
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//return helm_check_dudrho_T(&helmholtz_data_r41, ntd, td); |
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return helm_run_test_cases(&helmholtz_data_r41, ntd, td, 'C'); |
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} |
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|
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/* |
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A small set of data points calculated using REFPROP 8.0, for validation. |
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*/ |
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|
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const TestData td[] = { |
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/* Temperature, Pressure, Density, Int. Energy, Enthalpy, Entropy, Cv, Cp, Cp0, Helmholtz */ |
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/* (C), (MPa), (kg/m3), (kJ/kg), (kJ/kg), (kJ/kg-K), (kJ/kg-K), (kJ/kg-K), (kJ/kg-K), (kJ/kg) */ |
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{-1.00E+2, 1.E-1, 9.24980088556E+2, -1.99303694221E+1, -1.98222589869E+1, 1.6029011057E-2, 1.30940733353E+0, 2.06326405214E+0, 9.88184909757E-1, -2.27057926867E+1} |
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, {-5.0E+1, 1.E-1, 1.87849066134E+0, 4.91412081433E+2, 5.44646309347E+2, 2.91941311977E+0, 8.05659380714E-1, 1.08378525422E+0, 1.01120828777E+0, -1.60054956243E+2} |
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, {0.E+0, 1.E-1, 1.51562785032E+0, 5.32582349703E+2, 5.98561607065E+2, 3.13739666416E+0, 8.31253995863E-1, 1.08939305009E+0, 1.06347509421E+0, -3.24397549112E+2} |
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, {5.0E+1, 1.E-1, 1.27476690481E+0, 5.7609855393E+2, 6.54544267906E+2, 3.32544797075E+0, 9.04281166858E-1, 1.15600640953E+0, 1.14337775187E+0, -4.98519957819E+2} |
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, {1.00E+2, 1.E-1, 1.10124766361E+0, 6.23777907884E+2, 7.1458400292E+2, 3.49803946058E+0, 9.99451950233E-1, 1.24834298998E+0, 1.24109000437E+0, -6.81515516832E+2} |
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, {1.50E+2, 1.E-1, 9.69787990358E-1, 6.76434482867E+2, 7.79549803941E+2, 3.6612879683E+0, 1.10375467766E+0, 1.35115932339E+0, 1.34651126469E+0, -8.72839520921E+2} |
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, {-1.00E+2, 1.E+0, 9.25947274924E+2, -2.02937185905E+1, -1.92137434914E+1, 1.39269650927E-2, 1.3092377534E+0, 2.0609679334E+0, 9.88184909757E-1, -2.27051725963E+1} |
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, {-5.0E+1, 1.E+0, 8.18601882889E+2, 8.35028472243E+1, 8.47244422644E+1, 5.40924823566E-1, 1.21189322049E+0, 2.13191641089E+0, 1.01120828777E+0, -3.72045271545E+1} |
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, {0.E+0, 1.E+0, 1.70656169564E+1, 5.13898477586E+2, 5.72495831702E+2, 2.50517696416E+0, 9.67654410261E-1, 1.4160561752E+0, 1.06347509421E+0, -1.70390610175E+2} |
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, {5.0E+1, 1.E+0, 1.35510085069E+1, 5.64922367302E+2, 6.38717612836E+2, 2.72809551738E+0, 9.5398246117E-1, 1.28578376241E+0, 1.14337775187E+0, -3.16661699138E+2} |
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, {1.00E+2, 1.E+0, 1.14197334128E+1, 6.159534043E+2, 7.03521122727E+2, 2.91449545222E+0, 1.02393139471E+0, 1.31824235904E+0, 1.24109000437E+0, -4.71590573696E+2} |
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, {1.50E+2, 1.E+0, 9.92526990571E+0, 6.70490704963E+2, 7.71243632541E+2, 3.08471141936E+0, 1.11776489943E+0, 1.39462561108E+0, 1.34651126469E+0, -6.34804932138E+2} |
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, {-1.00E+2, 1.0E+1, 9.35141037806E+2, -2.37396059925E+1, -1.3046031873E+1, -6.30639886112E-3, 1.30798547289E+0, 2.04071698197E+0, 9.88184909757E-1, -2.26476530297E+1} |
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, {-5.0E+1, 1.E+1, 8.35307660891E+2, 7.70410371188E+1, 8.90126739996E+1, 5.1138340454E-1, 1.21075570262E+0, 2.06694489916E+0, 1.01120828777E+0, -3.70741696043E+1} |
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, {0.E+0, 1.E+1, 7.14978440371E+2, 1.83113509321E+2, 1.97099945044E+2, 9.4764148325E-1, 1.18919806525E+0, 2.30892751101E+0, 1.06347509421E+0, -7.5734761829E+1} |
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, {5.0E+1, 1.0E+1, 5.22729605608E+2, 3.14298254163E+2, 3.33428603568E+2, 1.40332399113E+0, 1.26328523711E+0, 3.580167677E+0, 1.14337775187E+0, -1.39185893572E+2} |
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, {1.00E+2, 1.0E+1, 1.89482571675E+2, 5.09688928852E+2, 5.62464231149E+2, 2.06413152473E+0, 1.29603321023E+0, 3.07868085845E+0, 1.24109000437E+0, -2.60541749599E+2} |
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, {1.50E+2, 1.0E+1, 1.27395304477E+2, 6.0355537795E+2, 6.82051206671E+2, 2.36616436094E+0, 1.25413475871E+0, 2.03231400813E+0, 1.34651126469E+0, -3.9768707138E+2} |
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}; |
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|
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const unsigned ntd = sizeof(td)/sizeof(TestData); |
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|
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#endif |
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