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운전조건에 따른 가변속 캐스케이드 열펌프의 성능 특성 연구
정광무(Kwangmoo Jeong),최종민(Jong Min Choi) 한국지열·수열에너지학회 2013 한국지열에너지학회논문집 Vol.9 No.2
Most researches done on heat pumps have been on heat pumps for refrigeration, cooling and heating. There is therefore the need for more research on hot water heat pumps, especially for high temperature. Even though the cascade heat pump cycle has a great potential more efficient hot water generation even at low evaporating temperatures, it has been researched least for this purpose. In this study, the heating performance of a variable speed cascade heat pump was investigated by varying operating conditions. For the same heating capacity values, it was found that increasing the low stage compressor speed was more suitable for enhancing the performance of the system to get a higher temperature.