Experimental Analysis of Influencing Factors on Heat Exchange Efficiency of Cast-in Place Energy Piles  

作　　者：CHEN Zhi XIAO Yu XIAO Henglin QUE Mengke SUN Yang 陈智;肖彧;肖衡林;阙梦珂;孙洋(School of Civil Engineering, Architecture and Environment, Hubei University of Technology, Wuhan 430068, China)

机构地区：[1]School of Civil Engineering,Architecture and Environment,Hubei University of Technology,Wuhan 430068,China

出　　处：《Journal of Donghua University(English Edition)》2020年第1期66-73,共8页东华大学学报（英文版）

基　　金：National Natural Science Foundation of China(No.51808203);Major Technological Innovation Projects of Hubei Province,China(No.2017AAA128);Youth Science and Technology Research Program of Hubei Education Department,China(No.Q20181405)。

摘　　要：The energy pile is a kind of building energy-saving technology using shallow geothermal energy,and its heat exchange performance is an important factor affecting its development.In this study,heat exchange tests were carried out on three full-size cast-in place energy piles,and the influence of various factors on the heat exchange amount and the heat exchange rate was analyzed.The following conclusions are drawn:(1)the heat exchange rate of the cast-in place energy pile is greatly affected by the inlet water temperature;(2)increasing the pile length can increase the heat exchange amount,but has little effect on improving the heat exchange rate;(3)the increase in the heat exchange amount by heat exchange pipes in series is not significant,and therefore the parallel-type heat exchange pipes should be considered in practical engineering;(4)the appropriate circulating water flow velocity gives the best heat exchange efficiency.

关 键 词：energy PILE CAST-IN PLACE HEAT EXCHANGE AMOUNT HEAT EXCHANGE rate 

分 类 号：TU437[建筑科学—岩土工程]