制冷剂-润滑油互溶混合物系流动沸腾特性测试装置的研制

在对已有相关测试装置设计技术的利弊分析基础上,提出了一种测试制冷剂-润滑油互溶混合流体管内流动沸腾特性的装置,其特征是通过与制冷剂流动沸腾换热测量回路并联接入一开式的润滑油回路,从而实现灵活控制和调节实验段内润滑油量的目的.通过在压缩机出口串连接入3个油分离器进行三级油分,从而实现压缩机出口的润滑油零排放.该装置具有连续在线注油、达到稳态时间短、操作灵活、控制简单等优点.

A new experimental rig of testing flow boiling heat transfer of refrigerant-lubricant mutually soluble mixture

This paper reported a new experimental rig of testing flow boiling heat transfer of mutually soluble mixture of refrigerant and lubricant oil based on the review of the related open literatures.The quantity of oil in the test section can be controlled and regulated conveniently and accurately by connecting a separate lubricant oil open circuit with test section in parallel. It was built up by retrofitting a multiple air conditioner and installing three oil separators in series at the compressor outlet,so that the lubricant oil in the discharged refrigerant gas of compressor can be removed completely.The refrigerant flow rate through test section can be divided by the by path circuit of indoor unit. The advantages of this experimental rig are on line and continuous oil injection, short time of obtaining stability, flexible operation, simple control, etc. which can lead to high efficiency in the research of flow boiling heat transfer of refrigerant and lubricant oil mixture.