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Dual Performance of Novel Steel Pipe Heat Exchangers Equipped in Cast-in-Place Energy Pile by Lee, Seokjae ;Park, Sangwoo ;Kim, Dongkwan ;Ahn, Dongwook ;Choi, Hangseok is a Engineering article available to read on EtoBox.

What is Dual Performance of Novel Steel Pipe Heat Exchangers Equipped in Cast-in-Place Energy Pile about?

Pile foundations support superstructures by transferring structural loads into the ground, where rocks or hard ground formations exist. Energy piles additionally utilize geothermal energy for heating and cooling buildings via embedded heat exchange pipes. However, when constructing energy piles, additional budgets are required for materials and labor to install conventional high-density polyethylene (HDPE) heat exchange pipes. The applicability of cast-in-place energy piles equipped with novel steel pipe heat exchangers (SPHXs) is investigated herein as substitutes for deformed rebars to reinforce concrete. Energy piles encasing SPHXs are expected to fulfill multiple functions of supporting structural loads and operating as heat exchangers without requiring additional heat exchange pipes. Two cast-in-place energy piles encasing SPHXs of different diameters were constructed in a test bed. Then, pile load tests (i.e., dynamic load test and lateral load test) were conducted to estimate the bearing capacities of these energy piles. Consequently, both energy piles secured safety factors greater than 2.0, and the allowable lateral loads were sufficient, indicating acceptable structural c

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Author

Lee, Seokjae ;Park, Sangwoo ;Kim, Dongkwan ;Ahn, Dongwook ;Choi, Hangseok

Publisher

Elsevier BV

Published

2021

Language

EN

Field

Engineering (Physical Sciences)