현장 열성능 평가시험을 통한 강관 에너지파일의 적용성 평가 KCI

Title
현장 열성능 평가시험을 통한 강관 에너지파일의 적용성 평가
Alternative Title
Evaluation of Applicability of Steel-pipe Energy Piles Through Thermal Performance Test (TPT)
Author(s)
이석재; 최항석
KIOST Author(s)
Lee, Seokjae(이석재)
Alternative Author(s)
이석재
Publication Year
2022-06
Abstract
A novel steel-pipe energy pile is introduced, in which the deformed rebars for main reinforcing are replaced with steel pipes in a large diameter cast-in-place energy pile. Here, the steel pipes act as not only reinforcements but also heat exchangers by circulating the working fluid through the hollow hole in the steel pipes. Under this concept, the steel-pipe energy pile can serve a role of supporting main structures and exchanging heat with surrounding mediums without installing additional heat exchange pipes. In this study, the steel-pipe energy pile was constructed in a test bed considering the material properties of steel pipes and the subsoil investigation. Then, the thermal performance test (TPT) in cooling condition was conducted in the constructed energy pile to investigate thermal performance. In addition, the thermal performance of the steel-pipe energy pile was compared with that of the conventional large diameter cast-in-place energy pile to evaluate its applicability. As a result, the steel-pipe energy pile showed 11% higher thermal performance than the conventional energy pile along with much simpler construction processes.
ISSN
2799-4783
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/42522
DOI
10.17664/ksghe.2022.18.2.001
Bibliographic Citation
한국지열·수열에너지학회논문집, v.18, no.2, pp.1 - 9, 2022
Publisher
한국 지열 · 수열에너지학회
Keywords
Steel-pipe energy pile(강관 에너지파일); Steel pipe(강관); Large diameter cast-in-place energy pile(대구경 현장타설 에너지파일); Thermal performance test(현장 열성능 평가시험)
Type
Article
Language
Korean
Publisher
한국 지열 · 수열에너지학회
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