| Title |
An Analytic and Experimental Study on the Performance Characteristic of the Rotary Compressor |
| Keywords |
Rotary compressor ; 로타리 압축기 ; Superheat ; 과열도 ; Map-based model ; 성능곡선 모델 ; Air-conditioner ; 공조기 ; Compressor calorimeter ; 압축기 열량계 |
| Abstract |
A study to improve the accuracy of a map-based compressor model with experiment was performed. Corrections on the effects of suction gas superheat and heat leakage from a compressor shell are required to apply the compressor map model based on the empirical performance data (map) of compressor manufacturers to the actual system. So experiments to assess the effects of superheat and heat leakage were performed and the corrected equations were made. Compressors and refrigerant used in the experiment were the high pressure type rotary compressor and R-22, experiments were performed by compressor calorimeter. From the experiment, a volumetric efficiency correction factor showed the value of 0.77, slightly higher than 0.75 proposed by Dabiri and Rice for low pressure type reciprocating compressor, and the heat leakage from the compressor shell turned out to be a factor that influenced the discharged mass flow rate. The relation between heat leakage of compressor shell and the variation of discharged mass flow rate from compressor was considered in compressor map modeling as an empirical function. With this function, the prediction accuracy of compressor model in system conditions was improved. |