地埋管地源热泵中长期数值模拟的土壤内热源法

Soil heat source method for long-term simulation of ground-source heat pump

在分析常规地埋管地源热泵中长期数值模拟方法——管群换热模拟法的基础上,提出了新的模拟方法——土壤内热源法。模拟结果表明,在内热源法网格数仅为管群换热模拟法网格数1/8的情况下,两者在中长期运行工况下的土壤温度场变化及埋管区域年温升变化基本相同,采用内热源法可以大大简化计算过程,缩短计算时间。

Based on the analysis of conventional long-term numerical simulation method-heat transfer of tube group method for soil-source heat pump, puts forward a soil heat source method. For the two simulation methods, the simulation results indicate that the change of soil temperature field and annual change rate of tube group area are quite similar, with the number of grid with the soil heat source method being reduced to only 1/8 of that with the heat transfer of tube group method, simplifying the simulation process and shortening the time needed.