摘要
将Carl的热物理性质计算关联式应用于碳氢制冷剂HC2 90和HC6 0 0a ,在制冷空调的常用温度范围内 ,检验了Carl系数的计算精度 ,并进行了重新拟合 ,使拟合误差比应用Carl系数的误差减小了一个量级左右 ,效果良好 ,可用于系统仿真和快速工程计算。另外补充了新的饱和蒸汽的热物理性质计算方程及系数 ,给出了全部计算偏差结果 。
Carl's correlations are used to calculate thermophysical properties of propane(HC290)and iso butane(HC600a) and the precision of Carl's coefficients is inspected at the common temperature range used in refrigeration and air conditioning.The coefficients are successfully re fitted and the fitting errors are minished to be about a tenth of those of Carl's coefficients.The equation coefficients can well be used in system simulation and rapid engineering computation.The equations and coefficients calculating thermophysical properties of saturated steam are supplemented which are not given by Carl.The problem of data fitting precision is briefly analysed at the end.
出处
《流体机械》
CSCD
2004年第9期55-59,共5页
Fluid Machinery
基金
南开大学-天津大学联合研究院基金项目 (TD2 0 0 10 11)
关键词
碳氢制冷剂
丙烷
异丁烷
输运性质
热物理性质
hydrocarbon refrigerants
propane
iso butane
transport properties
thermophysical properties
