U型管进水温度对土壤温度场的影响  

Effects of U-shaped Pipe Inlet Water Temperature on Soil Temperature Field

作　　者：张炳钟 晋华[1] 陈思青 郭换芳 郭磊 张雨露 ZHANG Bing-zhong;JIN Hua;CHEN Si-qing;GUO Huan-fang;GUO Lei;ZHANG Yu-lu(College of Water Resources Science and Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学水利科学与工程学院,山西太原030024

出　　处：《水电能源科学》2022年第9期185-189,共5页Water Resources and Power

基　　金：国家自然科学基金项目(41372247);山西省回国留学人员科研项目(2017-045)。

摘　　要：为研究竖直U型管进水温度对土壤温度场分布的影响,基于有限元数值模拟软件COMSOL建立了地埋管换热器的三维数值模型,并运用砂箱试验数据对模型进行了验证,验证结果表明模型可靠性高,然后运用验证的地埋管三维数值模型研究了地埋管不同进水温度对土壤温度场的影响。结果表明,不同进水温度影响下,随土壤温度和地埋管进水温度差值的增大,土壤温度场的影响范围变大,系统换热量增加;地下水渗流能够提高竖直地埋管的换热能力。In order to study the distribution of soil temperature field affected by the inlet water temperature of vertical U-shaped pipe,a three-dimensional numerical model of the buried pipe heat exchanger was established based on the finite element numerical simulation software COMSOL,which is highly reliable because of the high consistance with the data obtained from the sand box experiment.Then the verified model was used to study the impact of different inlet water temperatures of buried pipe on the soil temperature field.In the case of different inlet water temperatures,the results show that the impact range of the soil temperature field becomes larger with an increase of the temperature difference between the pipe and the soil,resulting an increased heat exchange of the system.In addition,the groundwater seepage improves the heat exchange capacity of the vertical buried pipe.

关 键 词：U型管进水温度 竖直地埋管 土壤温度场 COMSOL 模型验证 

分 类 号：TV139.16[水利工程—水力学及河流动力学]