摘要
根据1993 ASHRAE HANDBOOK中的制冷剂物性数据,对每种制冷剂以一系列饱和液相状态点的(T,P8)i作为输入参数,以饱和液相密度的平均相对误差值最小为目标函数,求解了33种制冷剂的PT状态方程参数-虚拟临界压缩因子ξc和斜率F.PT方程结合本文所确定的参数用于热力学性质计算,能够满足工程计算的精度要求。
Based on the saturated liquid data from 1993 ASHRAE HANDBOOK, two substance dependent parameters in PT equation of state, the pseudo-critical compressibility factor ξc and the slope F, were determined for 33 refrigerants by taking (T, P8)i as input quantities and minimizing the average deviation in saturated liquid densities for each substance. It was shown that the PT equation of state with the ξc and F values by this work represents the refrigerants' PVT behaviour in adequate accuracies for engineering applications.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2005年第3期373-375,共3页
Journal of Engineering Thermophysics
基金
国家自然科学基金资助课题"新型中高温热泵工质的热力学性质与循环性能研究"(No.50476062)
关键词
PT状态方程
虚拟临界压缩因子
斜率
制冷剂
PT equation of state
the pseudo-critical compressibility factor ξc
the slope F
refrigerants
