[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] 点击复制 地源热泵中U型埋管传热过程的数值模拟() 分享到： var jiathis_config = { data_track_clickback: true };

37

2007年第1期

78-83

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

Author(s):
School of Energy and Environment, Southeast University, Nanjing 210096, China

Keywords:

TK12
DOI:
10.3969/j.issn.1001-0505.2007.01.018

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.

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