SET Proceedings 2978-4387 Caravel Press 10.65582/set.2005.108 2005.108 Experimental Study on Underground Heat Exchanger with Different Types LiXinguo ChenYan ChenZhihao ZhaoJun Department of Thermal Engineering, School of Mechanical Engineering, Tianjin University, Tianjin 300072, P.R.China 23092005 4 1 978-7-112-07718-2 490 492 23 September 2005 © 2005 Copyright WSSET 2005

The design and application of Ground Coupled Heat Pump (GCHP) was mainly based on the heat transfer performance of underground heat exchanger. An experimental system with different types of U-vertical ground coupled heat exchanger (UGCHE) in situ was set up, for example, single or double UGCHE with sandstone backfilled, and single UGCHE with cement backfilled. The research on the thermal behaviour of UGCHE in different types, and in various conditions, such as different soil properties, backfill material, number of borehole exchangers, and different operation modes was carried out in the paper.

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