研制了一套基于等体积饱和法的高精度制冷剂/润滑油溶解度实验系统,该系统主要由恒温装置、实验本体、磁力搅拌系统、温度测量系统、压力测量系统、真空系统等组成.在此基础上,测量了温度为283.15 K时二甲醚在两种直链POE基础油PEC7和PEC9中的溶解度.计算了283.15K时二甲醚与PEC4、PEC5、PEC6、PEC7、PEC8和PEC9六种二元混合体系的过量Gibbs自由能和亨利常数,分析了二甲醚在六种直链POE基础油中的溶解度变化规律,为二甲醚在制冷系统中的进一步深入研究和应用提供了依据.
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