Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)
- Volume 11 Issue 2
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- Pages.193-204
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- 1999
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- 1229-6422(pISSN)
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- 2465-7611(eISSN)
Analysis on the performance characteristics of a variable-speed, roller-type vane compressor operating at low evaporating temperature
낮은 증발온도에서 운전되는 가변속 롤러형 베인 압축기의 성능특성에 관한 분석
Abstract
Performance of a variable-speed, roller-type vane compressor was evaluated at low evaporating temperature. First, an experimental investigation was conducted to examine the performance variation as functions of both outdoor temperature and rotating speed. For this purpose, a typical heat pump was implemented as a test apparatus to measure mass flow rate and power input. Secondly, computational investigations corresponding to the heat pump test conditions were performed to predict compressor performance using ORNL Map-Based compressor model. Results obtained from the heat-pump experiments showed that both mass flow rate and power consumption were sensitively dependent on both evaporating temperature and compressor speed as was predicted from the computational results. From the comparisons of both experimental and computational results, it was well recognized that the ORNL model was subjected to larger error in the accuracy of prediction as outdoor temperature decreased. When the outdoor temperature was above
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