CO_2压缩机性能试验台-油循环率测试系统的设计

Performance test rig of CO_2 refrigeration compressor-design of oil circulating rate test system

根据CO2制冷循环的高温高压特点及CO2与PAG润滑油的混合性,并参考国标GB/T5773-2004,设计了CO2压缩机油循环率的测试系统,该系统采用特制的高效油分离器,可测试油循环率在0.5%-5%,制冷量为1000-8000 W的CO2制冷压缩机;通过计算两种方法下的油循环率,取平均值得到被测压缩机的油循环率。实验结果显示,本测试系统运行稳定可靠,测量精度较高,满足用户要求和国标规定,具有很好的实践指导作用,可为企业的相关研究提供一定参考。

Recording to the high working temperature and high working pressure of carbon dioxide and the performance of carbon dioxide and PAG mixture, the carbon dioxide refrigeration compressor oil circulation rate test system was designed, based on the national standard GB/T5773-2004. This test system adopts the special purpose high efficiency oil separator. The system can test the performance of carbon dioxide compressor that oil circulating rate range is 0.5% 5% , and refrigerating capacity range is 1000 -8000 W. The oil circulating rate of the two methods was calculated, and their average was taken. The experimental results showed that the test system running stability, high accuracy was higher, which could meet the user＇s requirements and current national standard requirements. The test system was of good practice and reference for enterprise to make revelent research.