二元混合工质HFC32/125绝热指数计算模型分析  

ANALYSIS ON THE MODEL FOR CALCULATION OF THE ADIABATIC EXPONENT OF HFC32/125 BINARY MIXTURE WORKING FLUID

作　　者：谷波[1] 裴勇华[1] 郑钢[1] 

机构地区：[1]上海交通大学制冷与低温工程研究所,上海200030

出　　处：《低温工程》2002年第4期10-14,共5页Cryogenics

基　　金：国家"973"重点基础研究发展规划项目 (G2 0 0 0 0 2 6 30 9);上海交通大学"985"重点建设项目

摘　　要：绝热指数与定压比热在制冷系统数值分析和计算中极为重要。本文以纯物质的PR状态方程为基础 ,利用适当的混合法则对绝热指数和定压比热进行理论推导 ,得出适用于二元混合工质的绝热指数与定压比热方程 ;对HFC32 /1 2 5的定压比热分区间进行数值拟合 ,得出定压比热的拟合方程。本文对理论推导和数值拟合的结果进行比较 。The adiabatic exponent and the specific heat of isobaric process are more important in the numerical analysis and calculation in the refrigeration system These two parameters are theoretic deduced with proper mixing principle based on the PR state equation of the pure material,which are used to binary mixture working fluid The specific heat of isobaric process of HFC32/125 is obtained by numerical matching in different ranges of pressure This paper provides the precise equation of thermal physical property,obtained by comparing the numerical result with the matching one

关 键 词：计算模型 二元混合工质 HFC32/125 绝热指数 定压比热 制冷剂 热物理性质 

分 类 号：TB64[一般工业技术—制冷工程]