The analysis of Different Factors on Vertical U - tube Heat Exchanger

Gang Liu1, Honglin Zhang2, Bo Tang1, Shibao Zhu1

1Chongqing Bureau of Geology and Mineral Resources Exploration and Development Nanjiang Hydrogeology and Engineering Geological Team, Chongqing, China

2Chongqing Jiaotong University, Chongqing, China

Abstract: The effect of different thermal conductivity, inlet flow velocity, inlet water temperature and well depth on the heat transfer of ground ｓｏｕｒｃｅ heat pump system was analyzed by establishing U - tube single tube model. It is concluded that the increase of thermal conductivity will increase the heat transfer coefficient of ground ｓｏｕｒｃｅ heat pump , The increase of the inlet flow rate of the buried pipe will increase the heat exchange of the unit pipe and so on, which provides a reference for the practical application in the future.

Keywords: ground ｓｏｕｒｃｅ heat pump; buried pipe;heat transfer coefficient