http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
장형문(Xin Wen Zhang),이규남(Kyu Nam Rhee),정근주(Gun Joo Jung) 대한설비공학회 2019 대한설비공학회 학술발표대회논문집 Vol.2019 No.4
Ground source heat pump(GSHP) as heating or cooling system in the building has high energy performance, because the heat sourse is stable geothermal temperature. In summer time, long time operation of GSHP cooling system can reduce the stable geothermal temperature. With the result that heat pump system’s coefficient of performance(COP) will be decreased. In order to improve the performance of the heat pump system, the GSHP cooling system combined with hot water heat pump system is put forward. This system uses the condensation heat from the heat pump cooling part as a heat source for hot water heat pump. Hot water heat pump can cool the higher outlet water temperature which comes from cooling heat pump. Therefore, the geothermal temperature will be balanced, and the performance of the system will be improved. In this study, the COPs of single cooling and hot water GSHP systems are compared with the compound GSHP system. As the result, COP of cooling part in the compound GSHP system is 34% higher than the single cooling GSHP system. The COP of hot water part is 30% higher than the single hot water GSHP system.