Importance of long-term ground-loop temperature variation in performance optimization of Ground Source Heat Pump system

2022 ◽  
pp. 117945
Author(s):  
Wanlong Cai ◽  
Fenghao Wang ◽  
Shuang Chen ◽  
Chaofan Chen ◽  
Yuping Zhang ◽  
...  
Keyword(s):  
Temperature Variation ◽  
Heat Pump ◽  
Performance Optimization ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Ground Loop

Simulation of Solar Assisted Ground Source Heat Pump System in Different Regions

2011 ◽  
Vol 354-355 ◽  
pp. 798-801
Author(s):  
Qin Tao Zhou ◽  
Hua Dong ◽  
En Ze Zhou ◽  
Wei Yi
Keyword(s):  
Heat Pump ◽  
Storage Temperature ◽  
Weather Data ◽  
Fluid Temperature ◽  
Ground Source Heat Pump ◽  
Time Step ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Ground Loop

This study presents a simulation approach to assess the viability of solar assisted ground source heat pump system in different regions of China. A short time step model of ground loop exchanger is employed in the simulation with a 30% solar fraction. Weather data files used in the simulation are created based on Chinese Typical Year Weather (CTYW) data. Borehole length is optimized with a safety stop temperature of 0°C. The minimum Entering Fluid Temperature (EFT) decreases 1.3°C after 20-year simulation time and the team effect of ground loop exchangers is weaken as a result of spontaneous recovery of storage temperature. Borehole length replaced by area of solar collector ranges from 3.9m to 2.5m in the six cities. The results show that the annual performance of ground loop exchanger is low in heating-dominated regions and a solar assisted ground source heat pump (SAGSHP) system is needed in order to improve the system performance.

scholarly journals Viability Of Hybrid Ground Source Heat Pump System With Solar Thermal Collectors

2021 ◽  
Author(s):  
Farzin M. Rad
Keyword(s):  
Heat Exchanger ◽  
Heat Pump ◽  
Simulation Software ◽  
Solar Thermal ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Solar Thermal Collectors ◽  
Ground Loop

This thesis presents a study for examining the viability of hybrid ground source heat pump (GSHP) systems that use solar thermal collectors as the supplemental component in heating dominated buildings. Loads for an actual house in the City of Milton near Toronto were estimated. TRNSYS, a system simulation software tool, was used to model the yearly performance of conventional GSHP as well as the proposed hybrid GSHP system. The house was equipped with a data monitoring system which was installed to read and record fluid flow, temperature and electricity consumption in different components of the system. The actual yearly data collected from the site was examined against the simulation results. In addition, a sensitivity analysis was carried out to determine the relationship between the solar collector area and the ground loop heat exchanger (GHX) length. It was shown that the ratio of GHX length reduction to solar panel area of 4.7 m/m This study demonstrates that a hybrid GSHP system, combined with solar thermal collectors, is a feasible choice for space conditioning for heating dominated houses. It was shown that the solar thermal energy storage in the ground could reduce a large amount of ground loop heat exchanger length. Combining three solar thermal collectors with a total area of 6.81m

scholarly journals Viability Of Hybrid Ground Source Heat Pump System With Solar Thermal Collectors

2021 ◽  
Author(s):  
Farzin M. Rad
Keyword(s):  
Heat Exchanger ◽  
Heat Pump ◽  
Simulation Software ◽  
Solar Thermal ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Solar Thermal Collectors ◽  
Ground Loop

This thesis presents a study for examining the viability of hybrid ground source heat pump (GSHP) systems that use solar thermal collectors as the supplemental component in heating dominated buildings. Loads for an actual house in the City of Milton near Toronto were estimated. TRNSYS, a system simulation software tool, was used to model the yearly performance of conventional GSHP as well as the proposed hybrid GSHP system. The house was equipped with a data monitoring system which was installed to read and record fluid flow, temperature and electricity consumption in different components of the system. The actual yearly data collected from the site was examined against the simulation results. In addition, a sensitivity analysis was carried out to determine the relationship between the solar collector area and the ground loop heat exchanger (GHX) length. It was shown that the ratio of GHX length reduction to solar panel area of 4.7 m/m This study demonstrates that a hybrid GSHP system, combined with solar thermal collectors, is a feasible choice for space conditioning for heating dominated houses. It was shown that the solar thermal energy storage in the ground could reduce a large amount of ground loop heat exchanger length. Combining three solar thermal collectors with a total area of 6.81m

Performance analysis of photovoltaic-thermal road assisted ground source heat pump system during non-heating season

Solar Energy ◽  
2021 ◽  
Vol 221 ◽  
pp. 10-29
Author(s):  
Bo Xiang ◽  
Yasheng Ji ◽  
Yanping Yuan ◽  
Chao Zeng ◽  
Xiaoling Cao ◽  
...  
Keyword(s):  
Performance Analysis ◽  
Heat Pump ◽  
Ground Source Heat Pump ◽  
Heating Season ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source
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