한국신재생에너지학회:학술대회논문집
- 한국신재생에너지학회 2010년도 춘계학술대회 초록집
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- Pages.198.2-198.2
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- 2010
지열히트펌프의 작동시간 경과에 따른 COP 변화에 대한 연구
Study on COP Variations with the duration of Ground Source Heat Pump Systems Operation
- 발행 : 2010.06.17
초록
In this study, the COP variation with the duration of Ground Source Heat Pump (GSHP) systems operation was analyzed by experiment. This experimental facility was installed in residential house as a back-up device of solar thermal heating system. The capacity of heat pump is 2.5 kW with a vertical bore hole of 150m depth. The COP of GSHP is varied, depending on the ground temperature which is used as a heat source. The ground heat source temperature influencing heating COP is the soil or rock temperature which adjoin with geo-source heat exchanger. This temperature is decreased rapidly according to the operation duration of heat pump. As a result, COP of GSHP is decreased to 3 in one hour of continuous operation time.
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