Experimental and numerical analysis on thermal performance of large-diameter cast-in-place energy pile constructed in soft ground

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• 作者：Sangwoo Park^a ; Dongseop Lee^a ; Seokjae Lee^a ; Alexis Chauchois^b ; Hangseok Choi^a ; ^{hchoi2@korea.ac.kr}
• 关键词：Energy pile ; Large-diameter cast-in-place energy pile ; In-situ thermal performance test ; Computational fluid dynamics (CFD) analysis ; Heat exchange rate
• 刊名：Energy
• 出版年：2017
• 出版时间：1 January 2017
• 年：2017
• 卷：118
• 期：Complete
• 页码：297-311
• 全文大小：3445 K
• 卷排序：118

文摘

A large-diameter cast-in-place energy pile was constructed in reclaimed soft ground. Thermal performance tests were performed to estimate thermal performance of the energy pile. The heat exchange in cooling operation was about two times as large as that in heating operation. A parametric study was conducted to estimate the effect of temperature difference between fluid and ground formation. Tighter pipe layout causes thermal interference that reduces thermal performance of energy piles.