Performance Evaluation of Surface Texturing on Crank Shaft for Reciprocating Compressors

Abstract

It is very important to reduce the friction loss of the compressor for developing the refrigeration and air conditioning equipment with high efficiency. In this study, we focused on the low friction technology with the surface texturing on the crank shaft for reciprocating compressor. The characteristic of the crank shaft with the micro grooves was evaluated using calculation and experimental method. Compared to the crank shaft with smooth surface, the crank shaft with the micro grooves showed low friction characteristics. The performance of the reciprocating compressor with the textured crank shaft was also evaluated using the refrigeration cycle. The result of the performance test showed that the surface texturing on the crank shaft has the effect of decreasing the power consumption of the compressor and the coefficient of performance was improved.