地埋管换热器渗流传热特性的研究  

Study on seepage and heat transfer characteristics of ground heat exchanger

作　　者：孙一博 贾玉贵[1] 秦景[1] 王闯 宋涛 张盼 樊家辉 SUN Yi-bo;JIA Yu-gui;QING Jing;WANG Chuang;SONG Tao;ZHANG Pan;FAN Jia-hui(Hebei University of Architecture,Zhangjiakou 075000,Hebei)

机构地区：[1]河北建筑工程学院,河北张家口075000

出　　处：《河北建筑工程学院学报》2021年第3期123-128,160,共7页Journal of Hebei Institute of Architecture and Civil Engineering

基　　金：河北建筑工程学院创新基金项目(XY202144)。

摘　　要：通过建立地埋管管群分层渗流换热模型,模拟地下渗流流动方向为30°时不同分层下地埋管管群周围土壤的温度分布,通过模拟可知地下渗流的流速在一定的范围内有助于减弱地埋管管群周围土壤中的冷积聚,使地埋管管群周围土壤温度恢复快。同时引入单位井深换热量,将纯导热模型与分层渗流模型的单位井深换热量进行对比,得到分层渗流模型的换热效率要比纯导热模型的换热效率高,有利于地源热泵的长期运行。In this paper,the layered seepage heat transfer model of buried pipe group is established to simulate the temperature distribution of the soil around the buried pipe group under different layers when the flow direction of underground seepage is 30°.Through the simulation,it can be seen that the flow rate of underground seepage is within a certain range,which helps to weaken the cold accumulation in the soil around the buried pipe group and make the soil temperature around the buried pipe group recover quickly.At the same time,the heat transfer per unit well depth is introduced,and the heat transfer per unit well depth of the pure heat conduction model is compared with that of the layered seepage model.It is obtained that the heat transfer efficiency of the layered seepage model is higher than that of the pure heat conduction model,which is conducive to the long-term operation of the ground source heat pump.

关 键 词：分层渗流换热模型 流速 单位井深换热量 纯导热模型 

分 类 号：TU83[建筑科学—供热、供燃气、通风及空调工程]