대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)
- 대한설비공학회 2006년도 하계학술발표대회 논문집
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- Pages.501-505
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- 2006
스크류 2단 압축 열펌프 시스템의 운전 제어 방안에 관한 연구
A Study on the Operating Control of a 2-Stage Heat Pump System with Screw Compressors
- 김지영 (한국에너지기술연구원(KIER) 미활용.지열에너지연구센터) ;
- 백영진 (한국에너지기술연구원(KIER) 미활용.지열에너지연구센터) ;
- 이영수 (한국에너지기술연구원(KIER) 미활용.지열에너지연구센터) ;
- 나호상 (한국에너지기술연구원(KIER) 미활용.지열에너지연구센터)
- Kim, Ji-Young (Unutilized and Geothermal Energy Research Center, Korea Institute of Energy Research(KIER)) ;
- Baik, Young-Jin (Unutilized and Geothermal Energy Research Center, Korea Institute of Energy Research(KIER)) ;
- Lee, Young-Soo (Unutilized and Geothermal Energy Research Center, Korea Institute of Energy Research(KIER)) ;
- Ra, Ho-Sang (Unutilized and Geothermal Energy Research Center, Korea Institute of Energy Research(KIER))
- 발행 : 2006.06.21
초록
A preliminary performance test of a 30RT 2-stage screw heat pump was carried out in order to develop a high performance large-scale unutilized energy source heat pump, which will be used in district heating and cooling. Two issues on the system control were investigated in this study, A stable 2-stage heating operation is guaranteed only if the load-side water inlet temperature is over a certain value, to where the 1-stage heating operation should be done first from a cold start. An oil shortage problem in low stage compressor, which depends on the degree of suction superheat, was solved by the proper oil level control scheme.