Vapor-liquid equilibria of HFC-32/n-butane mixtures

被引：10

作者：

Shimawaki, S ^{[1
]}

Fujii, K ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Natl Metrol Inst Japan, Mat Properties & Metrol Stat Div, Fluid Properties Sect, Tsukuba, Ibaraki 3058563, Japan

来源：

INTERNATIONAL JOURNAL OF THERMOPHYSICS | 2003年 / 24卷 / 04期

关键词：

circulation method; HFC-32; mixture; n-butane; Peng-Robinson equation of state; vapor-liquid equilibrium; Wong and Sandler mixing rules;

D O I：

10.1023/A:1025052901472

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The vapor-liquid equilibria of HFC-32 and n-butane mixtures were measured in a temperature range of 283.15 to 313.15 K using a circulation method. The experimental standard uncertainties of temperature, pressure, and composition measurements were estimated to be within 10 mK, 2 kPa, and 0.2% in mole fraction, respectively. The measured data were correlated with the Peng-Robinson (PR) equation of state using Wong and Sandler mixing rules. The relative deviations of the measured bubble-point pressure from the calculated bubble-point pressure as a function of the measured bubble-point pressure were found to be less than 2.5%.

引用

页码：1033 / 1042

页数：10

共 12 条

[1] A recirculation apparatus for vapor-liquid equilibrium measurements of refrigerants. Binary mixtures of R600a, R134a and R236fa [J].