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자료유형
학술저널
저자정보
Yoon, Seok (Department of Civil and Environmental Engineering, Korean Advanced Institute for Science and Technology) Lee, Seung-Rae (Department of Civil and Environmental Engineering, Korean Advanced Institute for Science and Technology) Go, Gyu-Hyun (Department of Civil and Environmental Engineering, Korean Advanced Institute for Science and Technology) Xue, Jianfeng (School of Applied Science and Engineering, Monash University) Park, Hyunku (Division of Civil Engineering, Samsung C&T) Park, Dowon (Department of Civil and Environmental Engineering, Korean Advanced Institute for Science and Technology)
저널정보
테크노프레스 Geomechanics & engineering Geomechanics & engineering 제6권 제1호
발행연도
2014.1
수록면
79 - 98 (20page)

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This paper presents an experimental and numerical study on the evaluation of a thermal response test using a precast high-strength concrete (PHC) energy pile and a closed vertical system with W-type ground heat exchangers (GHEs). Field thermal response tests (TRTs) were conducted on a PHC energy pile and on a general vertical GHE installed in a multiple layered soil ground. The equivalent ground thermal conductivity was determined by using the results from TRTs. A simple analytical solution is suggested in this research to derive an equivalent ground thermal conductivity of the multilayered soils for vertically buried GHEs. The PHC energy pile and general vertical system were numerically modeled using a three dimensional finite element method to compare the results with TRTs'. Borehole thermal resistance values were also obtained from the numerical results, and they were compared with various analytical solutions. Additionally, the effect of ground thermal conductivity on the borehole thermal resistance was analyzed.

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