Phase Equilibria of CFC Alternative Refrigerant Mixtures. Binary Systems of Trifluoromethane (HFC-23) + 1,1,1,2-Tetrafluoroethane (HFC-134a) and Trifluoromethane (HFC-23) + 1,1,1,2,3,3,3-Heptafluoropropane (HFC-227ea) at 283.15 and 293.15 K
Phase Equilibria of CFC Alternative Refrigerant Mixtures. Binary Systems of Trifluoromethane (HFC-23) + 1,1,1,2-Tetrafluoroethane (HFC-134a) and Trifluoromethane (HFC-23) + 1,1,1,2,3,3,3-Heptafluoropropane (HFC-227ea) at 283.15 and 293.15 K
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DOI：
10.1021/je010103c
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发表时间：
2001-10
影响因子：
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通讯作者：
J. Lim;K. Park;B. Lee;Jae-Duck Kim
中科院分区：
文献类型：
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作者：
J. Lim;K. Park;B. Lee;Jae-Duck Kim
在283.15和293.15 K下测定了三氟甲烷（HFC-23）+1，1，1，2-四氟乙烷（HFC-134 a）和三氟甲烷+1，1，1，2，3，3，3-七氟丙烷（HFC-227 ea）二元混合物的等温汽液平衡。实验是用循环式平衡装置进行的，该装置测量了液相和气相的温度、压力和组成。实验数据与Peng−罗宾逊状态方程采用Wong−Sandler混合规则进行关联。计算结果与实验数据吻合较好。在这两种混合物中均未发现共沸行为。
Isothermal vapor−liquid equilibria for the binary mixtures of trifluoromethane (HFC-23) + 1,1,1,2-tetrafluoroethane (HFC-134a) and trifluoromethane + 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea) were measured at 283.15 and 293.15 K. The experiments were carried out with a circulation-type equilibrium apparatus with measurement of the temperature, pressure, and compositions of the liquid and vapor phases. The experimental data were correlated with the Peng−Robinson equation of state using the Wong−Sandler mixing rules. Results calculated with this equation showed good agreement with the experimental data. Azeotropic behavior has not been found in either of these mixtures.