Influence of the Distribution of Pumping and Injection Wells on Heat Transfer Characteristic of Borehole Heat Exchangers

被引：0
|
作者：
Ma J. [1 ,2 ]
Shao G. [1 ]
Wang Y. [1 ]
Xie Y. [1 ]
Wang C. [1 ]
机构：
[1] School of Energy Safety Engineering, Tianjin Chengjian University, Tianjin
[2] Key Laboratory for Efficient Use of Low and Medium Grade Energy, Ministry of Education of China, Tianjin University, Tianjin
来源：
Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and Engineering | 2019年 / 27卷 / 05期
关键词：
Borehole heat exchanger; Groundwater seepage; Heat transfer rates per unit borehole depth; Peclet number; Pumping and injection wells;
D O I：
10.16058/j.issn.1005-0930.2019.05.019
中图分类号：
学科分类号：
摘要：
A unsteady state heat transfer model coupling pumping-injection wells and borehole heat exchangers (BHEs) was established based upon the transient moving finite line heat source theory and groundwater seepage and heat transferring in porous media. The numerical simulation was probed into the influence of the distribution regularity of pumping and injection wells on heat transferring characteristic of BHEs. The heat exchange performance and temperature difference between inlet and outlet of BHEs enhances obviously, meanwhile the heat transfer efficiency increases by more than 5% under the coupling pumping-injection wells mode. The effect of thermal diffusion is the minimum under the unilateral distribution mode of pumping and injection wells, and heat transfer rates per unit borehole depth of BHEs are beyond of the symmetrical mode. Considering the effect of distribution patterns on heat and mass transfer in the fine silt aquifer, the heat transfer rate per unit borehole depth increases 61.4%, comparing to no seepage condition, when Peclet number is merely 0.75. © 2019, The Editorial Board of Journal of Basic Science and Engineering. All right reserved.
引用
下载
收藏
页码：1158 / 1171
页数：13
相关论文
共 22 条
  • [1] Thirteenth five-year plan about geothermal energy development and utilization
  • [2] Sagia Z., Rakopoulos C., Kakaras E., Et al., Cooling dominated hybrid ground source heat pump system application, Applied Energy, 94, 6, pp. 41-47, (2012)
  • [3] Molina-Giraldo N., Bayer P., Blum P., Evaluating the influence of thermal dispersion on temperature plumes from geothermal systems using analytical solutions, International Journal of Thermal Sciences, 50, 7, pp. 1223-1231, (2011)
  • [4] Angelotti A., Alberti L., La-Licata I., Et al., Energy performance and thermal impact of a borehole heat exchanger in a sandy aquifer: influence of the groundwater velocity, Energy Conversion and Management, 77, pp. 700-708, (2014)
  • [5] Man Y., Yang H., Diao N., Et al., A new model and analytical solutions for borehole and pile ground heat exchangers, International Journal of Heat and Mass Transfer, 53, 13, pp. 2593-2601, (2010)
  • [6] Cui P., Li X., Man Y., Et al., Heat transfer analysis of pile geothermal heat exchangers with spiral coils, Applied Energy, 88, 11, pp. 4113-4119, (2011)
  • [7] Cui P., Zhang W., Diao N., Et al., Heat transfer of spiral coils buried in medium with uniform groundwater advection, Acta Energiae Solaris Sinica, 37, 4, pp. 932-939, (2016)
  • [8] Hecht-Mendez J., Paly M., Beck M., Et al., Optimization of energy extraction for vertical closed-loop geothermal systems considering groundwater flow, Energy Conversion and Management, 66, 11, pp. 1-10, (2013)
  • [9] Zanchini E., Lazzari S., Priarone A., Long-term performance of large borehole heat exchanger fields with unbalanced seasonal loads and groundwater flow, Energy, 38, 1, pp. 66-77, (2012)
  • [10] Zhang L., Zhao L., Yang L., Analyses on heat transfer of borehole heat exchanger in soil with groundwater advection using coupled heat transfer model, CIESC Journal, 66, 4, pp. 1290-1300, (2015)
123