R1234ze PVTx热物性模拟计算  

Simulation calculation of thermophysical properties of R1234ze

作　　者：黄致谦 许寒冰 HUANG Zhi-qian;XU Han-bing(Shanghai Merchant Ship Design&Reseerch Institute,Shanghai 201210,China)

机构地区：[1]上海船舶研究设计院,上海201210

出　　处：《能源工程》2022年第1期12-15,共4页Energy Engineering

摘　　要：寻找可靠高效的制冷剂已成为制冷行业中亟待解决的问题之一。通过使用基于量子化学的真实溶剂似导体屏蔽模型(COSMO-RS)来模拟计算混合制冷剂R1234ze的PVTx热物性,并将所得数据与美国国家标准研究所的Refprop 9.0数据相对比,结果表明:与以往的计算方法和实验方法相比,COSMO-RS所需参数少,耗时短,并且相对误差也较小;在253.15~323.15 K范围内比例因子为1、3、3.4时进行模拟计算,模拟结果与实验值相比较其最大相对误差为0.24%,大多温度下的饱和蒸汽压的相对误差的觉得值<0.1%,说明了采用COSMO-RS模型模拟单一制冷工质的饱和蒸汽压的结果是准确可靠的。Finding reliable and efficient refrigerants has become one of an urgent problem in refrigeration industry.Based on quantum chemistry,the real solvent-like conductor shielding model(COSMO-RS)was used to simulate and calculate the PVTx thermal properties of the mixed refrigerant R1234 ze,The modeled data were compared with Refprop 9.0 data by National Institute of Standards,and the results show that,compared with previous calculation and experimental methods,fewer parameters are required in COSMO-RS,less time taken with smaller relative error.Simulation was performed withscale factor of 1,3 and 3.4 in temperature range of 253.15~323.15 K.Compared with experimental data,the maximum relative error of simulated data is 0.24%.The relative errors of saturated vapor pressures at majority of temperatures are below 0.1%,which shows that the COSMO-RS model is preferably used to simulate saturated vapor pressure of single refrigerant.

关 键 词：R1234ze COSMO-RS 热物性 饱和蒸汽压 

分 类 号：TB64[一般工业技术—制冷工程]