摘要
研制了一套高精度制冷工质溶解度实验系统,由自行开发的测控软件进行计算机实时测控.实验系统包括高精度温度测量系统(在253.15~363.15K范围内,测量的不确定度小于±14mK),高精度压力测量系统(在0~3.5MPa范围内,测量的不确定度小于±1.6kPa),高精度恒温水浴(293.15~363.15K),高精度恒温酒精浴(253.15~293.15K),真空及配气系统等.对283.15~348.15K温度范围内HFC-134a的饱和蒸气压进行了测量,并与标准值进行了比较,测量的平均偏差为0.54%.用此装置对制冷剂R22在吸收剂N,N-二甲基甲酰胺中的溶解度进行了实验研究,并同文献提供的数据进行对比,结果表明该实验系统具有较高的精度.
A new apparatus was developed to investigate solubility characteristics of refrigerantabsorbent. It consists of a temperature measurement system (253.15 -363.15 K, temperature uncertainty less than ±14 mK), a pressure measurement system (0 - 3.5 MPa, pressure uncertainty less than ±1.6 kPa),a water thermostat bath (293.15 - 363. 15 K),an alcohol thermostat bath (253. 15 - 293. 15 K),a vacuum system, and a mixture make-up system. In order to check the reliability and accuracy of the system, several test measurements were conducted on the vapor pressure of R134a and p-T diagram for the binary mixture of R22+DMF. The test results are in good agreement with the reference data.
出处
《西安交通大学学报》
EI
CAS
CSCD
北大核心
2007年第7期862-866,共5页
Journal of Xi'an Jiaotong University
基金
国家自然科学基金资助项目(50276054)
浙江省自然科学基金资助项目(Z105034)
关键词
溶解度
制冷工质
实验系统
solubility
refrigerant
experimental system