냉방주체 운전모드에서 동시냉난방 열펌프 성능향상에 관한 실험적 연구Experimental Study on the Performance Improvement of a Simultaneous Heating and Cooling Heat Pump in the Cooling-main Operating Mode
- Other Titles
- Experimental Study on the Performance Improvement of a Simultaneous Heating and Cooling Heat Pump in the Cooling-main Operating Mode
- Authors
- 정현준; 주영주; 강훈; 김용찬; 최종민
- Issue Date
- 2008
- Publisher
- 대한설비공학회
- Keywords
- Simultaneous heating and cooling(동시냉난방); Heat pump(열펌프); Heat recovery (열회수); Operating mode(운전모드)
- Citation
- 설비공학 논문집, v.20, no.5, pp.314 - 320
- Indexed
- KCI
- Journal Title
- 설비공학 논문집
- Volume
- 20
- Number
- 5
- Start Page
- 314
- End Page
- 320
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/124851
- ISSN
- 1229-6422
- Abstract
- The cooling load in winter is significant in buildings and hotels because of the usage of office equipments and the improved wall insulation. Hence, a multi-heat pump is required to cover heating and cooling simultaneously for each indoor unit. In this study, the operating characteristics and performance of a simultaneous heating and cooling heat pump in the cooling-main operating mode were investigated experimentally.The system adopted a variable speed compressor using R410A with four indoor units and one outdoor unit. In the cooling-main mode, the heating capacity decreased due to reduction of flow rate to the indoor unit under heating mode operation. The EEV opening was adjusted to increase flow rate to the indoor unit under heating mode operation. The total capacity and COP in the cooling-main mode increased by 20.5% and 29.2%, respectively, compared with those in the cooling-only mode
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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