Effect of groundwater flow in vertical and horizontal fractures on borehole heat exchanger temperatures

2014 ◽  
Vol 74 (2) ◽  
pp. 479-491 ◽  
Author(s):  
S. Emad Dehkordi ◽  
Bo Olofsson ◽  
Robert A. Schincariol
Keyword(s):  
Heat Exchanger ◽  
Groundwater Flow ◽  
Borehole Heat Exchanger

Thermal performance of borehole heat exchanger under groundwater flow: A case study from Baoding

2009 ◽  
Vol 41 (12) ◽  
pp. 1368-1373 ◽  
Author(s):  
Huajun Wang ◽  
Chengying Qi ◽  
Hongpu Du ◽  
Jihao Gu
Keyword(s):  
Heat Exchanger ◽  
Groundwater Flow ◽  
Thermal Performance ◽  
Borehole Heat Exchanger

scholarly journals Connecting Dynamic Heat Demands of Buildings with Borehole Heat Exchanger Simulations for Realistic Monitoring and Forecast

2021 ◽  
Vol 56 ◽  
pp. 45-56
Author(s):  
Jan Niederau ◽  
Johanna Fink ◽  
Moritz Lauster
Keyword(s):  
Heat Exchanger ◽  
Groundwater Flow ◽  
Energy Demand ◽  
Average Energy ◽  
Time Frame ◽  
Heat Pumps ◽  
Borehole Heat Exchanger ◽  
Ground Source Heat Pumps ◽  
Private Households ◽  
Average Energy Consumption

Abstract. Space heating is a major contributor to the average energy consumption of private households, where the energy standard of a building is a controlling parameter for its heating energy demand. Vertical Ground Source Heat Pumps (vGSHP) present one possibility for a low-emission heating solution. In this paper, we present results of building performance simulations (BPS) coupled with vGSHP simulations for modelling the response of vGSHP-fields to varying heating power demands, i.e. different building types. Based on multi-year outdoor temperature data, our simulation results show that the cooling effect of the vGSHPs in the subsurface is about 2 K lower for retrofitted buildings. Further, a layout with one borehole heat exchanger per building can be efficiently operated over a time frame of 15 years, even if the vGSHP-field layout is parallel to regional groundwater flow in the reservoir body. Due to northward groundwater flow, thermal plumes of reduced temperatures develop at each vGSHP, showing that vGSHPs in the southern part of the model affect their northern neighbors. Considering groundwater flow in designing the layout of the vGSHP-field is conclusively important. Combining realistic estimates of the energy demand of buildings by BPS with subsurface reservoir simulations thus presents a tool for monitoring and managing the temperature field of the subsurface, affected by Borehole Heat Exchanger (BHE) installations.

Numerical evaluation of the effects of groundwater flow on borehole heat exchanger arrays

2013 ◽  
Vol 52 ◽  
pp. 230-240 ◽  
Author(s):  
Jung Chan Choi ◽  
Joonsang Park ◽  
Seung Rae Lee
Keyword(s):  
Heat Exchanger ◽  
Groundwater Flow ◽  
Numerical Evaluation ◽  
Borehole Heat Exchanger
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