Modeling of vertical ground heat exchangers in the presence of groundwater flow and underground temperature gradient

2019 ◽  
Vol 192 ◽  
pp. 15-30 ◽  
Author(s):  
Iosifina Iosif Stylianou ◽  
Savvas Tassou ◽  
Paul Christodoulides ◽  
Lazaros Aresti ◽  
Georgios Florides
Keyword(s):  
Temperature Gradient ◽  
Groundwater Flow ◽  
Heat Exchangers ◽  
Ground Heat Exchangers ◽  
Vertical Ground

Modeling and assessment of the efficiency of horizontal and vertical ground heat exchangers

Energy ◽  
2013 ◽  
Vol 58 ◽  
pp. 655-663 ◽  
Author(s):  
G. Florides ◽  
E. Theofanous ◽  
I. Iosif-Stylianou ◽  
S. Tassou ◽  
P. Christodoulides ◽  
...  
Keyword(s):  
Heat Exchangers ◽  
Ground Heat Exchangers ◽  
Vertical Ground

Comparison of effective thermal conductivity in closed-loop vertical ground heat exchangers

2011 ◽  
Vol 31 (17-18) ◽  
pp. 3669-3676 ◽  
Author(s):  
Chulho Lee ◽  
Moonseo Park ◽  
Sunhong Min ◽  
Shin-Hyung Kang ◽  
Byonghu Sohn ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Heat Exchangers ◽  
Closed Loop ◽  
Ground Heat Exchangers ◽  
Vertical Ground

scholarly journals Analysis of Vertical Ground Heat Exchangers: The New CaRM Tool

2015 ◽  
Vol 81 ◽  
pp. 288-297 ◽  
Author(s):  
Antonio Capozza ◽  
Angelo Zarrella ◽  
Michele De Carli
Keyword(s):  
Heat Exchangers ◽  
Ground Heat Exchangers ◽  
Vertical Ground

scholarly journals The energy source for heat pumps with vertical heat exchangers

2018 ◽  
Vol 44 ◽  
pp. 00157
Author(s):  
Piotr Rynkowski
Keyword(s):  
Heat Pump ◽  
Heat Exchangers ◽  
Electricity Consumption ◽  
Heat Pumps ◽  
Coefficient Of Performance ◽  
Temperature Analysis ◽  
Heat Flows ◽  
Ground Heat Exchangers ◽  
Vertical Heat ◽  
Vertical Ground

The paper presents the ground temperature analysis, heat flows and energy transferred from the soil massif by the vertical ground heat exchangers (VGHE). Three cases – with one, two and three vertical heat exchangers were compared. Their influences on the soil massif temperature in the heat exchangers area were shown. The mass flow and the temperature at the inlet and outlet side of the heat pump were measured in each circuit. Additional, the electricity consumption by the heat pump and energy supply to buffer vessel were measured. Finally, the Coefficient of Performance (COP) as a function of length of VGHE is shown for selected interval time.

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