【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 ,从而为系统分析和计算提供精确热物理性质方程更多还原

【Abstract】 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更多还原