EWT를 고려한 지중열교환기 파이프 선정에 관한 연구Study on Selection of Pipe Materials Considering EWT
- Other Titles
- Study on Selection of Pipe Materials Considering EWT
- Authors
- 류형규; 정민호; 이병석; 최현준; 최항석
- Issue Date
- 2014
- Publisher
- 한국지열에너지학회
- Keywords
- Geothermal energy; Open Type Ground Heat Exchanger; EWT; GHX; PVC; PE; 지열에너지; 개발형 지중열교환기; 히트펌프 입구 온도; 지중열교환기; 폴리염화비닐; 폴리에틸렌
- Citation
- 한국지열에너지학회논문집, v.10, no.2, pp.13 - 18
- Indexed
- KCI
OTHER
- Journal Title
- 한국지열에너지학회논문집
- Volume
- 10
- Number
- 2
- Start Page
- 13
- End Page
- 18
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/99938
- ISSN
- 1738-6985
- Abstract
- This paper proposes an optimum pipe material (PVC vs. PE) design & selection foropen loop ground heat exchangers. Heat exchange efficiency and/or workability, andthe need for trench insulation were investigated by comparing EWT (cooling mode) ofeach system. CFD simulations for the PVC and PE pipe with the same inner diametershow similar EWT. This is because the PVC pipe has a small thickness but a lowthermal conductivity as compared to the PE pipe, and thus these two properties tendto offset each other. However, a hypothetically insulated pipe led to a meaningfuldrop of EWT. This means pipe insulation is of importance in performance of groundheat exchangers. From analyzingclimate data and system operation, it is notadvantageous to insulate trench pipes due toconstruction difficulties and ground temperature characteristics that are seasonally varied.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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