Transient numerical model for a coaxial borehole heat exchanger with the effect of borehole heat capacity

被引：5
|
作者：
Yang, Xinyu [1 ]
Wang, Guodong [2 ]
Wang, Qingsheng [2 ]
Chen, Changqi [2 ]
机构：
[1] Hefei Univ Technol, Sch Automot & Transportat Engn, Hefei 230009, Anhui, Peoples R China
[2] Hefei Univ Technol, Sch Mech Engn, Hefei 230009, Anhui, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ENERGY RESEARCH | 2019年 / 43卷 / 12期
关键词：
coaxial borehole heat exchanger; specific heat capacity; transient model; vertical temperature distribution; THERMAL-RESISTANCE; PUMP SYSTEMS; PILE;
D O I：
10.1002/er.4457
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
This paper proposed a transient numerical model for a coaxial borehole heat exchanger, which considered the impact of borehole specific heat capacity. The fluid vertical temperature distribution inside the coaxial borehole heat exchanger (BHE) had been predicted based on MATLAB and compared with other transient models. Validated by measured data from a thermal response test, the built model agreed better than other models, especially in short times, with a relative error of 3.63% in 2 hours. Then, the quantitative influences of borehole specific heat capacity and other parameters on thermal performance of borehole heat exchangers were specified.
引用
收藏
页码：6551 / 6560
页数：10
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