湿土壤含湿特性对传热影响研究

针对于地源热泵地能换热系统在具有热源条件下土壤热湿迁移现象，进行了初步分析和实验，并对模拟计算应用可行性进行了认证。土壤含水静态传热实验，目的在于探讨土壤含湿程度对传热能力的影响，以及地下含水程度对换热区域换热性能的影响。研究土壤不同含水率情况下的传热性能，从而推断含水率在工程中的影响程度。为进一步研究地源热泵应用中关于土壤含水的传热问题奠定基础。

Heat transfer influenced by containing water in wet soil

Heat transfer of a vertical underground heat resource in the soil containing water was investigated experimentally and numerically for the earth energy utilization of ground source heat pump (GSHP). The feasibility of the numerical simulation was studied and verified. Steady-state wet soil experiments were carried out to study the effect of the soil humidity on the temperature and the capacity of heat exchanged. The results may provide a useful data-base for the engineering design of GSHP. The work in this paper is also useful for further investigation on the heat transfer in a non steady-state wet soil and with some groundwater flow.