低温区HFC152a饱和蒸汽压的实验测定  

MEASUREMENTS OF VAPOR PRESSURE FOR HFC152_a IN THE LOW TEMPERATURE REGION

作　　者：阴建民[1] 赵中友[1] 郭建翔 谭连城[1] 

机构地区：[1]西安交通大学

出　　处：《工程热物理学报》1991年第2期122-125,共4页Journal of Engineering Thermophysics

摘　　要：一、引言 HFCl52a作为一种制冷剂已越来越引人们的重视,它不但是性能优良的的共沸混合物R500的成分之一,而且因其对大氧自臭氧层的破坏势(ODP)为零,己有大量的研究致力于用HFCl52a或HFCl52a与其它工质的混合物来替代CFCl2作为冰箱的工作介质。对HFCl52a的基础物性虽然已有一些实验结果及数据关联工作发表,但其适用范围大多都在273.15K以上,ASHRAE数据手册中给出的物性表虽然已达—100℃。90 vapor pressure data of HFC152a were .measured, the temperature range cover 237.33 to 315K, the pressure rangs cover .058 to .999 MPa, .The purity of the sample is 99.9%. Ex-perimental uncertanties of temperature and pressure are ±12.8mK and ±5kPa for the temperature below 273.15K, respectively. For temperature higher than 273.15K, the uncertainties, are ±10.8mK and±1.0kPa, respectively. A new vapor presssure equation was correlated based on the present and other auther's data, the average deviation is .092%, the maximum deviation is - .54%. The new equation can be used in the range of temperature from 237 to 386 K.

关 键 词：制冷剂 低温区 蒸汽压 测定 冰箱 

分 类 号：TB64[一般工业技术—制冷工程]