中文摘要：

参照ASHRAE1990标准，本文设计了测量制冷剂／润滑油混合物互溶性的实验装置，通过观察法获得混合物的临界互溶温度。对R134a／矿物油、R134a／矿物油／纳米材料的互溶性进行了对比实验研究。结果表明，添加纳米材料，可以改善R134a和矿物油的互溶性。

英文摘要：

In this paper, an experimental apparatus was developed for measuring the critical solution temperature （CST） of refrigerant/lubricant mixtures based on ASHRAE 1990 standards, and tile critical solubility temperature of the mixtures were obtained by observing method. The miscibility of R134a/MO and R134a/MO/nanoparticles were compared. The results show that the miscibility of R134a and mineral oil should be improved because of the nanoparticles added.