이중관형 지중열교환기 구성에 따른 현장 열성능 평가Evaluation on in-situ Thermal Performance of Coaxial-type Ground Heat Exchanger with Different Configurations
- Other Titles
- Evaluation on in-situ Thermal Performance of Coaxial-type Ground Heat Exchanger with Different Configurations
- Authors
- 이석재; 정현석; 오광근; 박상우; 최항석
- Issue Date
- 2019
- Publisher
- 한국지열에너지학회
- Keywords
- Coaxial-type ground heat exchanger(이중관형 지중열교환기); Thermal response test(열응답 시험); Thermal performance test(열성능 시험); Pipe material(파이프 재료); Grouting material (그라우팅 재료)
- Citation
- 한국지열에너지학회논문집, v.15, no.4, pp.8 - 15
- Indexed
- KCI
- Journal Title
- 한국지열에너지학회논문집
- Volume
- 15
- Number
- 4
- Start Page
- 8
- End Page
- 15
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/69675
- ISSN
- 1738-6985
- Abstract
- In order to design coaxial-type Ground Heat Exchangers (GHEXs) efficiently, the effect of components (i.e, heat exchange pipe and grouting material) on the thermal performance of coaxial-type GHEXs should be identified in advance. In this paper, three coaxial-type GHEXs with different configurations were constructed in a test bed. Then, the effect of heat exchange pipes and grouting materials on the thermal performance of coaxial-type GHEXs was investigated by performing in-situ thermal response tests (TRTs) and thermal performance tests (TPTs). In the TRTs, the effective thermal conductivities of the coaxial-type GHEXs with concrete grouting and STS pipes were improved by 6.15 and 22.7%, respectively compared to those of bentonite grouting and HDPE pipes. Additionally, in the TPTs, the use of concrete grouting and STS pipes in the coaxial-type GHEXs enhanced the in-situ thermal performance by 15 and 33.8%, respectively.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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