Preliminary study of a closed loop vertical ground source heat pump system for an experimental pilot plant (Rome, Italy)

2021 ◽  
Author(s):  
Anna Carmela Violante ◽  
Marco Proposito ◽  
Filippo Donato ◽  
Giambattista Guidi ◽  
Luca Maria Falconi
Keyword(s):  
Heat Pump ◽  
Pilot Plant ◽  
Closed Loop ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Vertical Ground ◽  
Preliminary Study

scholarly journals Evaluation of Suitable Areas to Introduce a Closed-Loop Ground Source Heat Pump System in the Case of a Standard Japanese Detached Residence

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4294
Author(s):  
Gaurav Shrestha ◽  
Mayumi Yoshioka ◽  
Hikari Fujii ◽  
Youhei Uchida
Keyword(s):  
Heat Exchange ◽  
Heat Pump ◽  
Closed Loop ◽  
Ground Source Heat Pump ◽  
Standard Size ◽  
Pump System ◽  
Heat Pump System ◽  
The North ◽  
Ground Source ◽  
Suitability Map

Evaluation of appropriate areas to introduce a closed-loop ground-source heat pump (GSHP) system in the case of a standard detached residence was conducted in Akita Plain, Japan. Depth of borehole heat exchanger (BHE) required to use a GSHP system was taken as the suitability index, which is simpler for the general public to understand and to promote the system. Heating and cooling loads of the standard size detached residence were calculated based on the 2013 Energy Conservation Standard. To estimate BHE depths and estimate a suitable area, identical 3D BHE models were constructed at 30 points in the plain. Required BHE depths were determined by performing heat exchange simulations at each location using the calculated loads and heat exchange rates. A suitability map showing distribution of the required BHE depths was prepared. BHE depths were shorter in the north-western area compared to the other parts, implying that the coastal lowlands in this area are more suitable for closed-loop system in the standard detached residences in terms of heat exchange performance as well as the cost reduction. Thickly distributed Quaternary System with higher thermal conductivity is contributing to shorter BHE depths. The suitability map is effective to adopt potential areas for the system installation in the standard detached Japanese residences.

Energy analysis of a solar-ground source heat pump system with vertical closed-loop for heating applications

Energy ◽  
2011 ◽  
Vol 36 (5) ◽  
pp. 3224-3232 ◽  
Author(s):  
Kadir Bakirci ◽  
Omer Ozyurt ◽  
Kemal Comakli ◽  
Omer Comakli
Keyword(s):  
Heat Pump ◽  
Closed Loop ◽  
Energy Analysis ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

scholarly journals The Solar-Assisted Vertical Ground Source Heat Pump System in Cold Climates—A Case Study

Proceedings ◽  
2020 ◽  
Vol 51 (1) ◽  
pp. 24
Author(s):  
Piotr Rynkowski
Keyword(s):  
Heat Exchanger ◽  
Heat Pump ◽  
Solar Collector ◽  
Heat Extraction ◽  
Ground Heat Exchanger ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Vertical Ground

In this paper, experimental studies were performed for a solar ground source heat pump system (SGSHPS) with a vertical ground heat exchanger (VGHE). The experiment was operated during the summer in 2018. The heat from the solar collector was monitored by measuring the inlet and outlet temperatures and flow rate of the heat transfer fluids. An energy equilibrium balance carried out indicates heat extraction from the solar collector to the ground heat exchanger. It has been established that clear impact is achieved within a radius of 5 m. The average temperature of the actively regenerated borehole was higher than that of the undisturbed profile, which has a direct impact on the significant benefits of the coefficient of performance (COP) of the ground source heat pump system (GSHPS) and effectively helps soil regeneration. The average efficiency ratio of the heat transferred from solar radiation to soil in the SGSHPS was 42.3%.

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