동시냉난방 열펌프의 전열회수 성능 특성에 관한 연구Experimental Study on the Performance of a Simultaneous Heating and Cooling Heat Pump in the Heat Recovery Mode
- Other Titles
- Experimental Study on the Performance of a Simultaneous Heating and Cooling Heat Pump in the Heat Recovery Mode
- Authors
- 최종민; 정현준; 주영주; 강훈; 김용찬
- Issue Date
- 2008
- Publisher
- 대한설비공학회
- Keywords
- Simultaneous heating and cooling(동시냉난방); Heat pump(열펌프); Heat recovery (열회수); COP(성능계수)
- Citation
- 설비공학 논문집, v.20, no.11, pp.718 - 726
- Indexed
- KCI
- Journal Title
- 설비공학 논문집
- Volume
- 20
- Number
- 11
- Start Page
- 718
- End Page
- 726
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/124250
- ISSN
- 1229-6422
- Abstract
- The cooling load in winter is significant in buildings and hotels because of the usage of office equipments and the high efficiency of wall insulation. Hence, the development of a multi-heat pump that can cover heating and cooling simultaneously for each indoor unit is required. In this study, the performance of a simultaneous heating and cooling heat pump was investigated in the heat recovery mode (HR mode). The system adopted a variable speed compressor using R410A with four indoor units and one outdoor unit. In the HR mode, the capacity and COP were improved as compared with those in the cooling or heating mode because the waste heat in the outdoor unit was utilized as useful heat in the indoor units. However, energy imbalance between heating and cooling capacity of each indoor unit was observed in the 2H-1C HR mode. Therefore, the performance of the system in the 2H-1C HR mode was enhanced by controlling refrigerant flow rate through the outdoor unit.
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