TY - JOUR
TI - Experimental study on heat transfer enhancement of heat storage material for energy pile
AU - Yan Jun-Bo
AU - Gao Song
JN - Thermal Science
PY - 2023
VL - 27
IS - 1
SP - 591
EP - 597
PT - Article
AB - As a kind of clean and renewable energy, shallow geothermal energy has the  characteristics of wide distribution and huge reserves. The use of pile  foundation heat exchange for building heating is a new technology to realize  the effective utilization of geothermal energy. Improving the mechanical  properties of the pile body material and improving the heat exchange  efficiency of the pile foundation concrete will effectively promote the  application of concrete in building structures. In this paper, the effect of  steel fiber content on the thermal conductivity and mechanical strength of  concrete is discussed by carrying out physical and mechanical properties  test of concrete material of pile body. It is proposed to incorporate steel  fibers into the concrete of the pile body to improve its thermal  conductivity, thereby improving its heat transfer efficiency per unit time.  At the same time, the role of steel fiber in enhancing heat transfer  performance in pile material is analyzed from the microscopic mechanism,  which provides theoretical support for the optimization process of concrete  ratio of pile foundation in practical engineering.