U型管传热量影响因素的数值模拟研究  

NUMERICAL STUDY ON THE INFLUENCING FACTORS ON THE HEAT TRANSFER OF THE U-TUBE

作　　者：吴玉庭[1] 顾中煊[1] 马重芳[1] 唐志伟[1] 

机构地区：[1]传热强化与过程节能教育部重点实验室及传热与能源利用北京市重点实验室北京工业大学环境与能源工程学院,北京100022

出　　处：《工程热物理学报》2007年第1期116-118,共3页Journal of Engineering Thermophysics

基　　金：国家重点基础研究发展规划项目(No.G2000026300)

摘　　要：地下换热器是地源热泵的重要组成部分,竖直U型管是最常见的地下换热器形式。U型管与土壤间的传热受诸多因素的影响。为分析这些因素对于U型管传热的影响,本文建立了地源热泵竖直U型管地下换热器的三维全尺寸数值模型,在此基础上采用CFD软件FLUENT对U型管的埋管深度、进口水温、管内流速等一系列因素在冬夏不同工况下对U型管传热量的影响进行了数值模拟研究。经过整理分析得出的各种因素对传热量影响可以为优化工程设计提供依据。The ground heat exchanger is an important component of the Ground Coupled Heat Pump （GCHP） and the U-tube is most commonly used ground heat exchanger. The heat transfer between the U-tube and the soil is affected by many factors. To analyze the influence of these factors on the heat transfer of the U-tube, this paper built a full scale 3D numerical model of a U-tube ground heat exchanger of a Ground Coupled Heat Pump （GCHP）. Then numerical studies on the influence of various factors such as U-tube depth, inlet temperature, fluid velocity on the heat transfer of the U-tube werecarried out using CFD software FLUENT. The computed influence on the heat transfer can provide some insight to the optimization design.

关 键 词：U型管 传热 数值模拟 

分 类 号：TK523[动力工程及工程热物理—热能工程]