Helmholtz free energy equation of state for propane and R134a binary mixture

被引：8
作者：
Zhang, Haiyang [1 ]
Gao, Bo [1 ]
Wu, Wei [2 ]
Li, Huiya [1 ]
Zhong, Quan [1 ,3 ]
Chen, YanYan [1 ]
Liu, Wenjing [1 ]
Song, Yaonan [1 ]
Zhao, Yanxing [1 ]
Dong, Xueqiang [1 ]
Gong, Maoqiong [1 ,3 ]
Luo, Ercang [1 ]
Hu, Jianying [1 ]
机构：
[1] Chinese Acad Sci, Tech Inst Phys & Chem, Beijing 100190, Peoples R China
[2] Tsinghua Univ, Sch Architecture, Dept Bldg Sci, Beijing 100084, Peoples R China
[3] Univ Chinese Acad Sci, Beijing 100039, Peoples R China
来源：
INTERNATIONAL JOURNAL OF REFRIGERATION | 2018年 / 89卷
基金：
国家重点研发计划; 中国国家自然科学基金; 中国博士后科学基金;
关键词：
Helmholtz free energy; Equation of state; Binary mixture; R290; R134a; Refrigerant; MODEL PREDICTIVE 1978; PENG-ROBINSON EOS; 1,1,1,2-TETRAFLUOROETHANE PLUS PROPANE; PRESSURE PHASE-EQUILIBRIA; ISOTHERMAL FLASH PROBLEM; VAPOR-LIQUID-EQUILIBRIA; SULFHYDRYL-GROUP SH; PPR78; MODEL; THERMODYNAMIC PROPERTIES; INTERACTION PARAMETERS;
D O I：
10.1016/j.ijrefrig.2018.03.016
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
In this work, a Helmholtz free energy equation of state for R290 + R134a based on the multi-fluid approximations model was developed to describe the thermophysical properties of the binary mixture. The present equation shows more competitive than the default equation in REFPROP 9.1 (Lemmon et al., 2013). It covers a temperature range of (252-400) K and pressures up to 6.1 MPa. The estimated standard uncertainties of the present equation are 0.70% and 0.90% for the bubble point and dew point pressures, 0.26 K and 0.29 K for the bubble point and dew point temperatures, 0.13% and 0.60% for the saturated liquid and vapor densities, respectively. The main purpose is to provide a useful model for R290 + R134a, and thus to promote its better applications for the design and optimization of the refrigeration systems. (C) 2018 Elsevier Ltd and IIR. All rights reserved.
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页码：1 / 10
页数：10
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