U型垂直埋管式土壤源热泵埋管周围温度场的理论研究

Research of the temperature field around the U-tubes of a ground-coupled heat pump

应用有限单元法对土壤热源地下U型垂直埋管周围土壤的非稳态温度场进行了数值模拟 ,其结果与实验测试值吻合良好。根据数值模拟计算程序可给出U型垂直埋管向地下放热量与埋管的埋深及埋管的热作用半径的对应关系 ,为U型垂直管埋深。

Numerically simulates the temperature field of the vertical U-tube, with the results in fine conformity with the measured data. Provides relationships of the heat rejection, the buried depth and the radial influencing radius of the U-tube, recommended as a practical reference for ground-coupled heat pump system design.