浅层土壤源埋管地温场热平衡性预测分析

Prediction and Analysis of Thermal Balance of Ground Temperature Field in ShallowSoil SourceBuriedPipe

考虑地温场冷热平衡对浅层土壤源埋管安全运行的重要性,以非稳态传热理论为基础,结合工程实例及监测数据,对双U形浅层土壤源埋管换热器地温场热平衡进行预测研究。通过模拟地埋换热器的工作情况,得出在连续运行工况下,U形管周围温度分布、热流量变化情况,进而确定换热器的热作用半径。

Considering the importance of the cold and hot balance of the geothermal field to safe operation of shallow soil source buried pipes,based on the theory of unsteady heat transfer,combined with engineering examples and monitoring data,the article predicts the thermal balance of the ground temperature field of double u-shaped shallow soil source.By simulating the working condition of the buried heat exchanger,the temperature distribution and heat flow change around the U-tube under the continuous operating condition are obtained,and then the heat action radius of the heat exchanger is determined.