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코일형 PHC 에너지 파일의 최적 설계 및 시공에 관한 연구
류형규(Hyung-Kyou Ryu),이병석(Byung-Seok Lee),박상우(Sang-Woo Park),이철호(Cul-Ho Lee),최항석(Hang-Seok Choi) 대한설비공학회 2012 대한설비공학회 학술발표대회논문집 Vol.2012 No.6
An energy pile encases heat exchange pipes to exchange heat energy with the surrounding ground formation by circulating working fluid through the pipes. In this paper, a coil.type PHC energy pile was constructed in a test bed and its thermal performance was experimentally and numerically evaluated to make a preliminary design. An in-situ thermal response test(TRT) was performed in the coil-type PHC energy pile and its results were compared with the solid cylinder source model. In addition, a CFD numerical model using FLUNET was carried out to back-analyze the thermal conductivity of the ground formation from the TRT result. Finally, by using this CFD numerical model, the optimal length(pitch) of the coil pipe is calculated for efficient PHC energy pile design and construction.