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자료유형
학술대회자료
저자정보
저널정보
대한설비공학회 대한설비공학회 학술발표대회논문집 대한설비공학회 1998년도 하계학술발표회 논문집(Ⅱ)
발행연도
1998.6
수록면
491 - 498 (8page)

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Performance of a variable-speed, roller-type compressor was evaluated at low evaporating temperature. First, an experimental investigation was conducted to examine performance variation as functions of both out-door 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 investigation corresponding to the heat pump test conditions was 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 of 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 percentage of error in the accuracy of prediction as out-door temperature decreased. When the out-door temperature is above -5℃, errors of predicted values corresponding to both mass flow rate and power consumption were estimated as ±10% and ±15%, respectively. Finally, it is suggested that the ORNL model needs to be re-evaluated if compressor map data tested below -10℃(in evaporating temperature) are available.

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ABSTRACT

1. 서론

2. 압축기 성능예측 모델

3. 실험 장치 구조 및 시험방법

4. 실험결과

5. 유량 및 소비입력의 예측

6. 결론

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