Performance comparison among two-phase, liquid, and vapor injection heat pumps with a scroll compressor using R410A
- Authors
- Kim, Dongwoo; Jeon, Yongseok; Jang, Dong Soo; Kim, Yongchan
- Issue Date
- 5-6월-2018
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Two-phase injection; Vapor injection; Liquid injection; Heat pump; Scroll compressor
- Citation
- APPLIED THERMAL ENGINEERING, v.137, pp.193 - 202
- Indexed
- SCIE
SCOPUS
- Journal Title
- APPLIED THERMAL ENGINEERING
- Volume
- 137
- Start Page
- 193
- End Page
- 202
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/74962
- DOI
- 10.1016/j.applthermaleng.2018.03.086
- ISSN
- 1359-4311
- Abstract
- Although two-phase injection technique is expected to improve the performance and reliability of heat pumps in cold climate conditions, its application is limited due to wet-compression. In this study, a numerical model was developed and validated to predict the performance of liquid, vapor, and two-phase injection heat pumps. The performance characteristics of the liquid, vapor, and two-phase injection heat pumps with a scroll compressor using R410A were compared with the others, based on the predicted data. The optimum injection quality in the two-phase injection heat pump to achieve maximum COP was analyzed as a function of the injection pressure, compressor frequency, and outdoor temperature. The two-phase injection heat pump with the optimum injection quality exhibited the highest COP among all injection types with a proper discharge temperature. In addition, the two-phase injection heat pump with the optimum injection quality was more effective in COP improvement with decreasing outdoor temperature.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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