scholarly journals An Influence of Groundwater Flow on Performance of Closed Borehole Heat Exchangers (Part-1)

2016 ◽  
Vol 21 (3) ◽  
pp. 64-81
Author(s):  
Jeong Sang Hahn ◽  
Chan Hahn ◽  
Yun Sang Yoon ◽  
Young Seek Kiem
2021 ◽  
Vol 165 ◽  
pp. 391-404
Author(s):  
Teresa Magraner ◽  
Álvaro Montero ◽  
Antonio Cazorla-Marín ◽  
Carla Montagud-Montalvá ◽  
Julio Martos

Ground Water ◽  
2014 ◽  
Vol 53 (4) ◽  
pp. 558-571 ◽  
Author(s):  
S. Emad Dehkordi ◽  
Robert A. Schincariol ◽  
Bo Olofsson

Baltica ◽  
2019 ◽  
Vol 31 (2) ◽  
pp. 146-153
Author(s):  
Audrius Indriulionis ◽  
Žygimantas Palaitis ◽  
Petras Šinkūnas ◽  
Robert Mokrik

The vertical borehole heat exchangers were surrounded by the heterogeneous multilayered geological environment and groundwater flow that affected the performance of borehole plants. In this paper, the field investigation of vertical borehole ground heat exchangers in capital city Vilnius (Visoriai), Lithuania is presented. The numerical heat transfer model considering seven different geological strata was developed using the cylindrical heat sink model for vertical borehole inside by solving the soil mass and heat transfer equations with groundwater flow. The numerical multilayered ground vertical borehole heat transfer model was calculated and validated by in-situ thermal response test data. The numerical model results were also compared with the homogeneous finite difference model expressed by the temperature response functions (well known as “g-functions”). The practical realization of g-functions was designed in the Earth Energy Designer as a practical tool for geoengineers designing the vertical borehole plants. The temperature profiles at borehole wall at different heating times were presented and explored together with relative errors. The numerical model will be used as a practical tool for the Lithuanian Geological Survey under the Ministry of Environment to estimate the underground conditions for the consumption of shallow geothermal energy.


2016 ◽  
pp. 499-503
Author(s):  
J Van Steenwinkel ◽  
D Simpson ◽  
M Degros ◽  
W Vienne ◽  
G Van Lysebetten ◽  
...  

2016 ◽  
Vol 21 (6) ◽  
pp. 114-127
Author(s):  
Jeongsang Hahn ◽  
Youngseek Kiem ◽  
Juhyun Lee ◽  
Byoungho Lee ◽  
Chan Hahn

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