混合工质R134a/R23焓-浓度图的绘制  

Enthalpy-composition Diagram Plotting for R134a/R23

作　　者：王雁[1] 杜垲[1] 

机构地区：[1]东南大学动力工程系,南京210096

出　　处：《制冷学报》2005年第2期51-56,共6页Journal of Refrigeration

基　　金：国家自然科学基金资助项目(50476045)

摘　　要：使用PR(Peng-Robinson)方程对混合工质R134a/R23进行了气液相平衡的预测和焓、熵的计算。针对PR方程液相精度比较差的问题,对PR方程引入了修正系数,重新推导了逸度系数、余函数等表达式,并将计算结果与实验数据进行了比较。根据计算得到的R134a/R23热物性数据,绘制了工程上广泛使用的二元混合工质的焓-浓度图,为基于该混合工质的循环计算,提供了重要的基础数据。R134a/R23 is a new refrigerant mixture and friendly to environment. In this research, the vapor-liquid equilibrium, enthalpy, and entropy of this mixture were calculated based on Peng-Robinson(PR)equation of state(EOS). To make PR equation more accurate, a correction factor was correlated and the fugacity coefficient and complementary function were recalculated. According to the result from this calculation, an enthalpy-composition diagram was plotted, which supplies important data for thermophysical properties and cycle analysis of R134a/R23.

关 键 词：R134A 浓度图 绘制 焓 二元混合工质 PR方程 气液相平衡 热物性数据 修正系数 逸度系数 实验数据 计算结果 循环计算 基础数据 表达式 余函数 

分 类 号：TB64[一般工业技术—制冷工程] TQ114.26[化学工程—无机化工]