Performance improvement of solar-assisted ground-source heat pumps with parallelly connected heat sources in heating-dominated areas
- Authors
- Lee, Minwoo; Lee, Dongchan; Park, Myeong Hyeon; Kang, Yong Tae; Kim, Yongchan
- Issue Date
- 1-2월-2022
- Publisher
- PERGAMON-ELSEVIER SCIENCE LTD
- Keywords
- Solar-assisted ground-source heat pump; TRNSYS; Heating-dominated areas; Parallel configuration; Serial configuration
- Citation
- ENERGY, v.240
- Indexed
- SCIE
SCOPUS
- Journal Title
- ENERGY
- Volume
- 240
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/135230
- DOI
- 10.1016/j.energy.2021.122807
- ISSN
- 0360-5442
- Abstract
- Solar-assisted ground-source heat pumps (SGSHPs) with a serial configuration have been introduced to reduce the performance degradation of ground-source heat pumps (GSHPs) for their long-term operation. However, SGSHPs with parallel configurations have rarely been investigated in heating-dominated areas. In this study, the heating performances of a GSHP and SGSHPs with serial and parallel configurations in a heating-dominated building are analyzed using TRNSYS and compared for 20 years by varying the borehole length and solar collector area. With a borehole length of 120 m and solar collector area of 10 m2, an SGSHP with a serial configuration showed a 12.6 and 11.5% higher ground temperature and solar collector efficiency, respectively, than the parallel configuration owing to the solar heat injection into the ground. However, an SGSHP with a parallel configuration decreased the energy consumption by 19.6 and 13.8% compared to those for the GSHP and SGSHP with a serial configuration, respectively, owing to an improved heating capacity. Furthermore, an SGSHP with a parallel configuration can considerably decrease initial costs by reducing the borehole length. (c) 2021 Elsevier Ltd. All rights reserved.
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Collections - College of Engineering > Department of Mechanical Engineering > 1. Journal Articles
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