渗流作用下的中深层地埋管换热器传热分析  

ANALYSIS OF HEAT TRANSFER OF DEEP BOREHOLE HEAT EXCHANGER CONSIDERING GROUNDWATER SEEPAGE

作　　者：王昌龙 王鑫 鲁进利[1] 王栋[1] 张朋远 孙彦红 Wang Changlong;Wang Xin;Lu Jinli;Wang Dong;Zhang Pengyuan;Sun Yanhong(School of Civil Engineering and Architecture,Anhui University of Technology,Ma’anshan 243002,China)

机构地区：[1]安徽工业大学建筑工程学院,马鞍山243002

出　　处：《太阳能学报》2023年第3期304-310,共7页Acta Energiae Solaris Sinica

基　　金：安徽省自然科学基金(1808085QE178,2008085QE256)。

摘　　要：考虑地下水渗流的影响,基于移动线热源模型提出一种中深层地埋管换热器半解析模型。基于Fluent软件建立数值模型,并对已知进口流体温度和已知总热输入功率两种边界条件下的数值模型、半解析模型和忽略渗流的半解析模型进行对比。结果发现,两种边界条件下的半解析模型在前期均具有较大误差,而在中后期均与数值模型吻合得较好,其精度高于忽略渗流的半解析模型,尤其是在地下水渗流速度较大的时候。结果表明所提出的半解析模型可用于分析渗流作用下的中深层地埋管传热。Considering the effect of groundwater seepage,a semi-analytical model of deep borehole heat exchanger is proposed based on moving line source model.A numerical model was established based on FLUENT software,and the numerical model,semi-analytical model and semi-analytical model ignoring groundwater seepage were compared under two boundary conditions of known inlet fluid temperature and total heat input rate.The results show that the semi-analytical model with the two boundary conditions has large errors in the early stage,but agrees well with the numerical model in the middle and late stage,and its accuracy is higher than that of the semi-analytical model ignoring groundwater seepage,especially when the groundwater seepage velocity is high.The results show that the proposed semi-analytical model can be used to analyze the heat transfer of deep borehole heat exchanger with groundwater seepage.

关 键 词：换热器 地源热泵 地下水渗流 移动线热源模型 传热模型 

分 类 号：TK521[动力工程及工程热物理—热能工程]