几种二元混合制冷剂的汽液平衡研究  

Vapor Liquid Equilibria of Binary Refrigerant Mixtures

作　　者：王怀信[1] 孙军英[1] 张凤山[1] 吕灿仁[1] 

机构地区：[1]天津大学自动化学院热能与制冷工程系,天津300072

出　　处：《高校化学工程学报》1999年第5期398-402,共5页Journal of Chemical Engineering of Chinese Universities

基　　金：天津市自然科学基金!963001005

摘　　要：对臭氧安全二元混合物系HFC125／HFC143a和HFC152a／HFC143a进行了泡点、露点实验研究和相平衡关联计算，结果表明前者为近共沸混合物，后者为非共沸混合物。给出了10种低环害二元物系对应于RKS、PR、PT状态方程及二次型混合规则的交互作用系数。Fifteen measurements on bubble and dew point for HFC125/HFC143a andHFC152a/HFC143a were taken by means of PVTx apparatus with the uncertainties of ±78mK,±.4KPa, ±0.05% and ±0.01% for temperature, pressure, density and composition respectively-Theywere used to deterndne those binary interaction coefficients in drixing rules for RKS, PR, and PTequations of state. The vapor liquid equilibrium calculations showed that HFC125/HFC143a was anear-azeotropy ndxture while HFC152a/HFC143a was a nonazeotropy mixture. The optindzed binaryinteraction coefficients of other 8 binary mixtures were also given.

关 键 词：二元混合物 热力学性质 制冷剂 HFC125 HFC143a 

分 类 号：TB612[一般工业技术—制冷工程] TB64