[1]郎林智,段新胜,陈鹏宇,等.U型埋管传热数值模拟及恒热流模型分析[J].山东建筑大学学报,2010,(05):539-542.
 LANG Lin-zhi,Duan Xin-sheng,CHEN Peng-yu,et al.Numerical simulation of U-tube and analysis of constant heat flux models[J].Journal of Shandong jianzhu university,2010,(05):539-542.
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U型埋管传热数值模拟及恒热流模型分析()
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《山东建筑大学学报》[ISSN:1673-7644/CN:37-1449/TU]

卷:
期数:
2010年05期
页码:
539-542
栏目:
出版日期:
2010-10-15

文章信息/Info

Title:
Numerical simulation of U-tube and analysis of constant heat flux models
作者:
郎林智1段新胜1陈鹏宇1綦建峰2周维1
1. 中国地质大学(武汉)工程学院勘查技术与工程系,湖北 武汉 430074; 2. 中国地质大学(武汉)工程学院岩土工程与工程地质系,湖北 武汉 430074
Author(s):
LANG Lin-zhi Duan Xin-sheng CHEN Peng-yu et al.
Department of Exploration Engineering, Faculty of Engineering, China University of Geosciences, Wuhan 430074, China
关键词:
U型埋管数值模拟 PDE工具箱恒热流模型
Keywords:
U-tubenumerical simulationPDE toolboxconstant heat flux models
分类号:
TU831.4
文献标志码:
A
摘要:
对于地源热泵来讲,全面了解地下埋管周围的土壤温度场分布与变化状况十分重要。利用Matlab中的PDE工具箱建立了考虑实际钻孔半径、回填材料和U型管材料的竖直U 形埋管与土壤的二维非稳态传热模型来模拟热泵运行72h内对周围土壤温度场的影响,并与常用的恒热流传热模型计算的结果进行对比分析。结果显示以2~3m为半径进行埋管可以有效避免地热井间的干扰问题;线源模型与柱源模型相比较,线源模型计算的孔壁温度能够更好更快地趋近于数值模拟结果。线源模型在工程实践中应用价值更高。
Abstract:
As for the ground source heat pump, it’s very important to have a comprehensive understanding of the distribution and change of the soil temperature field around the buried pipes. A two-dimensional unsteady model of heat transfer between the vertical U-tube and the soil is built with Matlab PDE toolbox to simulate the heat pump operation and calculate its impact within 72 hours’ operation on the soil temperature field around and then the calculation results are compared with that by constant heat flux models. The results show that the buried tube designed with 2 to 3 meters radius can effectively avoid the interference between geothermal wells and that the hole wall temperature calculated by line source model better and faster approaches the results of numerical simulation than that by column source model.

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更新日期/Last Update: 2010-12-02