고온가스 및 액체 바이패스 적용 용량가변 히트펌프의 성능특성에 관한 실험적 연구An Experimental Study on the Performance Characteristics of Hot-gas and Liquid Bypass Heat Pump Systems for Capacity Modulation
- Other Titles
- An Experimental Study on the Performance Characteristics of Hot-gas and Liquid Bypass Heat Pump Systems for Capacity Modulation
- Authors
- 안재환; 주영주; 윤원재; 강훈; 김용찬
- Issue Date
- 2013
- Publisher
- 대한설비공학회
- Keywords
- Hot-gas bypass(고온가스 바이패스); Liquid bypass(액체 바이패스); Heat pump(히트펌프); Capacity modulation(용량가변)
- Citation
- 설비공학 논문집, v.25, no.3, pp.137 - 142
- Indexed
- KCI
- Journal Title
- 설비공학 논문집
- Volume
- 25
- Number
- 3
- Start Page
- 137
- End Page
- 142
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/104505
- DOI
- 10.6110/KJACR.2013.25.3.137
- ISSN
- 1229-6422
- Abstract
- A small air-conditioner or chiller for a constant temperature bath normally uses a constant speed compressor. The constant speed compressor is relatively inexpensive, but it uses on/off control for capacity modulation. The on/off control has several disadvantages, specifically energy loss and large temperature fluctuation. Continuous operation with a bypass system can be an alternative to on/off control, for capacity modulation. In this study, a heat pump system having a hot-gas bypass and a liquid bypass was adopted. The performance of the bypass-type heat pump was measured, by varying the bypass valve opening. The differences of the COP between the hot-gas bypass and the liquid bypass, in the cooling and heating operations, were within 2% and 1%, respectively. The liquid bypass showed a wider range of capacity control in the cooling operation but the hot-gas bypass showed a wider range of capacity control in the heating operation.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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