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Study of Thermodynamic Properties of Alternative Refringerant HCFC-123

替代制冷剂HCFC-123热力学性能研究

基本信息

批准号：
03650194
负责人：
OGUCHI Kosei
金额：
$ 1.41万
依托单位：
Kanagawa Institute of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1991
资助国家：
日本
起止时间：
1991 至 1993
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03650194/
关键词：
Alternative Refrigerant HCFC-123 Thermodynamic Properties Vapor Pressure PVT Properties Critical Point Liquid-Vapor Coexisting Curve HCFCー123 飽和隈界線

项目摘要

HCFC-123 (CHCl_2CF_3) has been expected to be one of the new environmentally acceptable CFC-11 alternative refrigerants and to be used for tirbo-refrigerators, effervescent agents of heat-insulating materials, and so on. The study of thermodynamic properties of HCFC-123 has been conducted experimentally and acalitically since 1991 for the present project. The 1994 produced amount of CFC-11 is regulated and reduced to 25% of 1993 amount, and is decided to be suspended in production until the beginning of 1996. A head investigator in cooperating with Dr.Takaishi has conducted the experimental studies, comparisons between the published data, correlation of equations as follows ;(1) Forty six data points of the vapor pressures of HCFC-123 were exprimentally obtained in the range of temperatures from 243 K to 453 K and pressures from 0.007 MPa to 3.45 MPa with in the accuracies of 5 mK and 2.2kPa, respectively. And forty nine data points of PVT properties of HCFC-123 has been measured in the range of temperatures from 304 K to 493 K, pressures up to 16.4 MPa and densities up to 1446 kg/m^3 within the accuracies of 5 mK, 2.2 kPa and 0.01%, respectively.(2) The critical constants were determined based on the vapor pressures and PVT properties along the liquid-vapor coexisting curve.(3) The vapor pressure equaion was formulated in 1990 International Temperature Scale based on the present observed data and previously published data.(4) The equation of state was correlated also in 1990 International Temperature Scale based on the present observed data and previously published data.

HCFC-123（CHCl_2CF_3）有望成为一种新型的环境可接受的CFC-11替代制冷剂，可用于制冷机、保温材料的增湿剂等。1994年CFC-11的生产量被调整为1993年的25%，并决定暂停生产至1996年初。一位首席研究员与Takaishi博士合作进行了实验研究，比较了已发表的数据，方程式的相关性如下;（1）氟氯烃蒸汽压力的46个数据点-在温度243 ~ 453 K、压力0.007 ~ 3.45 MPa范围内，实验测得了123个温度场，测量精度为5 mK，2.2kPa。在温度为304 ~ 493 K、压力为16.4 MPa、密度为1446 kg/m^3的范围内，测量了HCFC-123的49个PVT参数，测量精度分别为5 mK、2.2 kPa和0.01%。(2)根据汽液共存曲线沿着的蒸气压和PVT性质确定了临界常数。(3)根据现有观测资料和以前发表的资料，在1990年国际温标中建立了蒸汽压方程。(4)根据现有的观测数据和以前发表的数据，还关联了1990年国际温标中的状态方程。