地下水渗流条件下地埋管换热器的传热模型
Heat transfer model of ground heat exchangers with groundwater seepage
摘要：
提出了有限长线热源渗流传热模型，根据获得的解析解分析了地埋管换热器周围介质的温度响应。比较了有限长线热源和无限长线热源两种渗流模型，分析了地下水渗流速度及地埋管相关参数对热扩散的影响。研究表明，地下水渗流可改善地埋管换热器的换热性能，提高换热量，从而可降低系统的初投资。
Abstract：
Presents a heat transfer model of the finite length line heat source with groundwater seepage. Based on the derived analytical solution, analyses the temperature response around ground heat exchangers. Compares the finite length line heat source model with the infinite length line heat source model and discusses the effects of groundwater seepage velocity and other relevant parameters of ground heat exchangers on the heat dispersion. The study shows that the groundwater seepage can improve the performance of ground heat exchangers and increase heat transfer quantity, thereby reducing the initial investment of the system.
Keywords:groundwater seepage, ground heat exchanger, finite length line heat source, heat transfer model, temperature response