P-V Diagram Measurement of a Variable Speed Rotary Compressor with Large Displacement

Conference Year

2018

Authors

Yang Qian, Shanghai Highly Electrical Appliances Co., Ltd, China, People's Republic ofFollow
Li Zhang, R&D Center, Shanghai Hitachi Electrical Appliances Co., Ltd.,Follow
Xia Zhang, Shanghai Highly Electrical Appliances Co., Ltd, China, People's Republic ofFollow
Zheqiang Ying, Shanghai Highly Electrical Appliances Co., Ltd, China, People's Republic ofFollow

Keywords

rotary compressor; variable speed; large displacement; P-V diagram; efficiency

Abstract

In order to deeply understand the internal thermodynamic process of a variable speed rotary compressor with large displacement, the P-V diagram was measured as an important way to analyze efficiencies of the compressor. A testing compressor was modified for measurement of the internal dynamic pressure and performance. The compressor was tested under different operating conditions, and the P-V diagram was finally obtained. Based on the test results, efficiencies of the compressor can be estimated accurately, which could be used to optimize the compressor structure parameters.