基于混合解换热模型的地源热泵系统井群热干扰特性

发布时间：2018-06-08 00:46

本文选题：热泵系统 + 井群　；参考：《农业工程学报》2016年10期

【摘要】：为建立井群换热快速求解模型并研究其热干扰特性,提出了一种基于解析-数值计算的混合解模型,以16井群为研究对象,通过试验和数值模拟的方法研究了井群热干扰特性。研究结果表明:随着换热的进行井群中各井间产生热干扰并逐渐增强,同一运行时刻中井受热干扰程度最大、边井次之、角井则最小;由于井间热干扰的影响,角井换热能力最大、井壁温度最低,边井换热能力和井壁温度居中,中井换热能力最小、井壁温度最高,则运行90 d时角井换热量比边井大6.5%,边井换热量比中井大7.1%;角井对井群换热量的贡献率随换热时间延长逐渐增加,中井对井群换热量的贡献率则逐渐减少,而边井对井群换热量的贡献率基本不变。
[Abstract]:In order to establish a fast solution model of well group heat transfer and study its thermal interference characteristics, a hybrid solution model based on analytic and numerical calculation was proposed. The thermal interference characteristics of well group were studied by means of experiment and numerical simulation. The results show that with the heat transfer in the well group, the thermal interference between the wells is the largest, the side well is the second, and the angle well is the least, because of the influence of the cross-well thermal interference, the thermal interference between the wells is the largest at the same operating time, the second one is the edge well, and the corner well is the least. The heat transfer capacity of the corner well is the largest, the wellbore temperature is the lowest, the heat transfer capacity and the wall temperature of the side well are in the middle, the heat transfer ability of the middle well is the least, and the wall temperature is the highest. At 90 days of operation, the heat transfer rate of the corner well is 6.5 larger than that of the side well, and the heat transfer ratio of the side well is 7.1 larger than that of the middle well, and the contribution rate of the angle well to the heat transfer of the well group increases gradually with the prolongation of the heat transfer time, while the contribution rate of the middle well to the heat transfer rate of the well group decreases gradually. But the contribution rate of edge well to heat transfer of well group is basically unchanged.
【作者单位】：西南交通大学机械工程学院;
【基金】：建筑环境与能源高效利用四川省青年科技创新研究团队项目(2015TD0015)
【分类号】：TU83

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