CIESC Journal ›› 2019, Vol. 70 ›› Issue (S2): 1-7.DOI: 10.11949/0438-1157.20190443
• Thermodynamics • Previous Articles Next Articles
Nan ZHANG1(),Longxiang CHEN2,Peng HU1()
Received:
2019-04-28
Revised:
2019-05-08
Online:
2019-09-06
Published:
2019-09-06
Contact:
Peng HU
通讯作者:
胡芃
作者简介:
张楠(1994—),男,博士研究生,基金资助:
CLC Number:
Nan ZHANG, Longxiang CHEN, Peng HU. Theoretical study on critical properties of 4 kinds of binary systems[J]. CIESC Journal, 2019, 70(S2): 1-7.
张楠, 陈龙祥, 胡芃. 混合工质临界性质的推算研究[J]. 化工学报, 2019, 70(S2): 1-7.
组分 | T c/K | P c/MPa | V c/(L/mol) | ω |
---|---|---|---|---|
CO2 | 304.13 | 7.3773 | 467.6 | 0.22394 |
R600 | 425.13 | 3.796 | 228.0 | 0.201 |
R1234yf | 367.85 | 3.3822 | 475.55 | 0.276 |
R1234ze | 382.51 | 3.6349 | 489.24 | 0.313 |
R32 | 351.26 | 5.782 | 424.0 | 0.2769 |
R125 | 339.17 | 3.6177 | 573.58 | 0.3052 |
Table 1 Critical parameters and eccentricity factors of pure working fluids[33]
组分 | T c/K | P c/MPa | V c/(L/mol) | ω |
---|---|---|---|---|
CO2 | 304.13 | 7.3773 | 467.6 | 0.22394 |
R600 | 425.13 | 3.796 | 228.0 | 0.201 |
R1234yf | 367.85 | 3.3822 | 475.55 | 0.276 |
R1234ze | 382.51 | 3.6349 | 489.24 | 0.313 |
R32 | 351.26 | 5.782 | 424.0 | 0.2769 |
R125 | 339.17 | 3.6177 | 573.58 | 0.3052 |
混合工质 | PR | SRK | MCP | Redlich-Kister | RBFNN | |||||
---|---|---|---|---|---|---|---|---|---|---|
δT c/% | δP c/% | δT c/% | δP c/% | δT c/% | δP c/% | δT c/% | δP c/% | δT c/% | δP c/% | |
CO2+R1234yf | 0.29 | 2.51 | 0.12 | 2.11 | 0.11 | 0.71 | 0.07 | 0.28 | 0.20 | 0.49 |
CO2+R1234ze | 0.30 | 2.26 | 0.18 | 1.88 | 0.17 | 1.67 | 0.17 | 0.51 | 0.06 | 0.67 |
CO2+R600 | 1.82 | 6.07 | 1.73 | 5.04 | 0.95 | 3.49 | 0.16 | 1.90 | 0.05 | 0.30 |
R32+R125 | 0.02 | 0.31 | 0.02 | 0.31 | 0.04 | 0.57 | 0.02 | 0.22 | 0.04 | 0.38 |
Table 2 Absolute average deviations of calculated results of five methods for four kinds of binary system
混合工质 | PR | SRK | MCP | Redlich-Kister | RBFNN | |||||
---|---|---|---|---|---|---|---|---|---|---|
δT c/% | δP c/% | δT c/% | δP c/% | δT c/% | δP c/% | δT c/% | δP c/% | δT c/% | δP c/% | |
CO2+R1234yf | 0.29 | 2.51 | 0.12 | 2.11 | 0.11 | 0.71 | 0.07 | 0.28 | 0.20 | 0.49 |
CO2+R1234ze | 0.30 | 2.26 | 0.18 | 1.88 | 0.17 | 1.67 | 0.17 | 0.51 | 0.06 | 0.67 |
CO2+R600 | 1.82 | 6.07 | 1.73 | 5.04 | 0.95 | 3.49 | 0.16 | 1.90 | 0.05 | 0.30 |
R32+R125 | 0.02 | 0.31 | 0.02 | 0.31 | 0.04 | 0.57 | 0.02 | 0.22 | 0.04 | 0.38 |
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