CARNAHAN-STARLING-DESANTIS AND LEE-KESLER-PLOCKER INTERACTION COEFFICIENTS FOR SEVERAL BINARY-MIXTURES OF OZONE-SAFE REFRIGERANTS

被引:11
作者
SAND, JR [1 ]
FISCHER, SK [1 ]
JONES, JA [1 ]
机构
[1] JET PROP LAB,PASADENA,CA 91109
来源
INTERNATIONAL JOURNAL OF REFRIGERATION-REVUE INTERNATIONALE DU FROID | 1994年 / 17卷 / 02期
关键词
CFC ALTERNATIVES; BINARY INTERACTION COEFFICIENTS; EQUATIONS OF STATE; OZONE DEPLETION;
D O I
10.1016/0140-7007(94)90053-1
中图分类号
O414.1 [热力学];
学科分类号
摘要
Interaction coefficients (ICs) which characterize the non-ideal behaviour of refrigerant mixtures are an important parameters for predicting or modelling the thermodynamic performance of these mixtures in air-conditioning and refrigeration cycles. Experimental data which permit calculation of these parameters for many combinations of the newer, more environmentally acceptable refrigerants are scarce. Saturated vapour pressure data for 70 known mixtures of 8 different refrigerants in 18 binary combinations were analysed to find the interaction coefficients from the best correlation between vapour pressures calculated from the Carnahan-Starling-DeSantis (CSD) and Lee-Kesler-Plocker (LKP) refrigerant property routines and experimental data. Nine of the experimentally measured ICs were not previously given for the CSD routines in the current version of REFPROP(R) from the National Institute of Standards and Technology. Fifteen new LKP ICs are reported. Comparisons are made with both published values and those estimated using algorithms unique to each system of subroutines. Agreement between the ICs reported in this work and published or estimated values is reasonably good in most cases given the simplicity of the test apparatus and experimental procedures. Very good agreement was seen between the ICs calculated in this work and the literature values for R12/R152a, R134a/R134 and R22/F152a, but poor agreement was seen for R22/R142b. Comparisons of published to estimated ICs and reported to estimated ICs suggest that estimation techniques should be improved.
引用
收藏
页码:123 / 129
页数:7
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