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Vapor Pressure of Pentafluoroethane and Trifluoroiodomethane
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作者 Zhang Chang Department of Mechanical Engineering, Wuhan Institute of Science and Technology, Wuhan 430073, China Duan Yuanyuan sbi lin +1 位作者 Zhu Mingshan Han Lizhong Department of Thermal Engineering, Tsinghua University, Beijing 100084, China. 《Journal of Thermal Science》 SCIE EI CAS CSCD 2001年第3期193-197,共5页
Pentafluoroethane (HEC-125) and trifluoroiodomethane (CF3I) are considered as promising refrigerant alternatives, especially as components in mixtures, to replace CFCs or HCFCs. Effective uses of HFC-125 and CF3I requ... Pentafluoroethane (HEC-125) and trifluoroiodomethane (CF3I) are considered as promising refrigerant alternatives, especially as components in mixtures, to replace CFCs or HCFCs. Effective uses of HFC-125 and CF3I require that the thermophysical properties be accurately measured. In the present work, vapor pressure data of HFC-125 and CF3I have been measured in the temperature range from 292 to 337 K and 288 to 336 K, respectively. Maximum total pressure uncertainty of HEC-125 data is estimated to be within ±1.2 kPa and ±780 Pa for CF3I. Based on the data set and literature values, the vapor pressure equations for HEC-125 and CF3I have been developed. The relative deviation of the equations correlate the measurements within 0.022% for HEC-125 and 0.068% for CF3I, respectively. 展开更多
关键词 PENTAFLUOROETHANE TRIFLUOROIODOMETHANE vapor pressure vapor pressure equation.
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