[1]杨卫波,施明恒.地源热泵中U型埋管传热过程的数值模拟[J].东南大学学报(自然科学版),2007,37(1):78-83.[doi:10.3969/j.issn.1001-0505.2007.01.018]
 Yang Weibo,Shi Mingheng.Numerical simulation on heat transfer process in U-bend ground heat exchanger of ground source heat pump[J].Journal of Southeast University (Natural Science Edition),2007,37(1):78-83.[doi:10.3969/j.issn.1001-0505.2007.01.018]
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地源热泵中U型埋管传热过程的数值模拟()
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《东南大学学报(自然科学版)》[ISSN:1001-0505/CN:32-1178/N]

卷:
37
期数:
2007年第1期
页码:
78-83
栏目:
能源与动力工程
出版日期:
2007-01-20

文章信息/Info

Title:
Numerical simulation on heat transfer process in U-bend ground heat exchanger of ground source heat pump
作者:
杨卫波 施明恒
东南大学能源与环境学院, 南京 210096
Author(s):
Yang Weibo Shi Mingheng
School of Energy and Environment, Southeast University, Nanjing 210096, China
关键词:
地源热泵 U型埋管 换热特性 数值模拟
Keywords:
ground source heat pump U-bend buried coil heat exchanger characteristic numerical simulation
分类号:
TK12
DOI:
10.3969/j.issn.1001-0505.2007.01.018
摘要:
以钻孔壁为界将U型埋管的换热区域划分为钻孔内外两部分,并分别采用稳态与非稳态传热来分析求解,两区域模型间通过钻孔壁温耦合连接,以构成完整的埋管传热模型.对于钻孔以外部分,采用变热流圆柱源模型来求解钻孔瞬时壁温.钻孔以内部分,在考虑埋管流体温度的沿程变化及U型管2支间热干扰的基础上,基于能量平衡建立了钻孔内U型埋管的稳态传热模型.用所建U型埋管传热模型对地源热泵系统的运行特性进行了动态模拟,得出了埋管出口流体温度、钻孔瞬时壁温、单位埋管吸热量及热泵COP随运行时间的变化规律.所建埋管模型可为地源热泵系统的动态模拟、优化设计及其改进提供参考.
Abstract:
The heat transfer region of vertical U-bend buried coil is divided into two parts at the boundary of borehole wall and the two parts are coupled by the temperature of borehole wall. Both steady and transient heat transfer method are used to analyze the heat transfer characteristics inside and outside borehole respectively. The transient borehole wall temperature is calculated for borehole by use of the variable heat flux cylindrical source model developed based on the classical constant heat flux cylindrical source theory. As for the region inside borehole, considering the variation of fluid temperature along the length and the heat interference between two adjacent legs, a steady heat transfer model is developed based on energy conservation. The dynamic simulation on the operation characteristic of ground source heat pump(GSHP)is conducted by use of the developed model, and the variation of exiting fluid temperature of U-bend buried coil, borehole wall transient temperature, absorbed heat flux of buried coil per length and coefficient of performance(COP)of heat pump with operation time are obtained. The developed buried coil model may provide reference for the system dynamic simulation, optimization design, and improvement of GSHP.

参考文献/References:

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相似文献/References:

[1]杨卫波,施明恒,陈振乾.非连续运行工况下垂直地埋管换热器的换热特性[J].东南大学学报(自然科学版),2013,43(2):328.[doi:10.3969/j.issn.1001-0505.2013.02.019]
 Yang Weibo,Shi Mingheng,Chen Zhenqian.Heat exchange characteristics of vertical U-tube ground heat exchanger with discontinuous operation condition[J].Journal of Southeast University (Natural Science Edition),2013,43(1):328.[doi:10.3969/j.issn.1001-0505.2013.02.019]
[2]杨卫波,陈振乾,施明恒.跨季节蓄能型地源热泵地下蓄能与释能特性[J].东南大学学报(自然科学版),2010,40(5):973.[doi:10.3969/j.issn.1001-0505.2010.05.018]
 Yang Weibo,Chen Zhenqian,Shi Mingheng.Underground energy storage and release characteristics of ground source heat pump with seasonal energy storage[J].Journal of Southeast University (Natural Science Edition),2010,40(1):973.[doi:10.3969/j.issn.1001-0505.2010.05.018]

备注/Memo

备注/Memo:
基金项目: 国家自然科学基金资助项目(50276013).
作者简介: 杨卫波(1975—),男,博士生; 施明恒(联系人),男,教授,博士生导师, mhshi@seu.edu.cn.
更新日期/Last Update: 2007-01-20