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以北京某地源热泵系统区为研究区,结合场地实际情况,使用TOUGH2软件建立数值模型,对土壤温度场分布进行预测研究。结果表明:在取暖期,浅层和深层土壤温度的最大降温分别为4.3℃和2.1℃;在制冷期,浅层和深层土壤温度的最大升温分别为4.7℃和2.4℃;地下水流速对温度场的分布有明显影响;6m换热孔孔间距不会产生孔间影响。研究结果可以为地源热泵系统的运行及优化提供参考。
Taking a ground source heat pump system area in Beijing as the research area, the TOUGH2 software was used to establish a numerical model to predict the distribution of soil temperature field based on the actual site conditions. The results showed that the maximum temperature drop was 4.3 ℃ and 2.1 ℃ for shallow and deep soils during the heating period respectively. During the cooling period, the maximum temperature of shallow and deep soils were 4.7 ℃ and 2.4 ℃, respectively. The effect of groundwater flow rate on temperature field The distribution has a significant impact; 6m heat transfer hole spacing will not produce the hole between the impact. The results can provide reference for the operation and optimization of ground source heat pump system.