Study on operation management of borehole heat exchangers for a large-scale hybrid ground source heat pump system in China

Energy ◽  
2017 ◽  
Vol 123 ◽  
pp. 340-352 ◽  
Author(s):  
Jin Luo ◽  
Haifeng Zhao ◽  
Jia Jia ◽  
Wei Xiang ◽  
Joachim Rohn ◽  
...  
Keyword(s):  
Heat Pump ◽  
Heat Exchangers ◽  
Large Scale ◽  
Operation Management ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Borehole Heat Exchangers

Numerical Simulations of a Ground Source Heat Pump System With Pile Heat Exchangers

2014 ◽  
Vol 7 (1) ◽  
Author(s):  
Masahito Oguma ◽  
Takeshi Matsumoto ◽  
Takao Kakizaki
Keyword(s):  
Numerical Simulation ◽  
Numerical Simulations ◽  
Heat Pump ◽  
Heat Exchangers ◽  
Heat Supply ◽  
Ground Surface ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

Feasibility of a ground source heat pump (GSHP) system with pile heat exchangers for use in houses is evaluated through a numerical simulation. This GSHP system differs from ordinary borehole-type GSHP systems because short foundation piles installed at close intervals are used as heat exchangers. It is shown that the annual heat supply provided by this GSHP system is able to satisfy the demand of a house due to the air-source exchange at ground surface.

Heat Transfer Analysis of Groundwater Flow for Ground Heat Exchangers in the Multi-Borehole Field of Ground Source Heat Pump under the Intermittent Operation

2014 ◽  
Vol 548-549 ◽  
pp. 595-600
Author(s):  
Can Can Zhang ◽  
Yue Jin Yu
Keyword(s):  
Groundwater Flow ◽  
Heat Pump ◽  
Heat Exchangers ◽  
Heat Transfer Analysis ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Heat Exchangers ◽  
Ground Source ◽  
Thermal Interference

In order to analyze the influence of groundwater flow on ground heat exchangers with different arrangements, with a project in Nanjing the access temperature field in the multi-borehole field was simulated after the ground source heat pump system had been performed for a year. Simulation results show that the access temperature is higher in the ground surrounding the borehole than the center of the corresponding borehole, thus forming a thermal barrier surrounding the borehole. Groundwater flow helps relieve temperature imbalance owing to the imbalance of heating and cooling load. The performance of the ground heat exchangers is better in staggered arrangement than in aligned arrangement. In the borehole field, the boreholes upstream have thermal interference on those downstream. And the extent of thermal interference depends on the direction of the groundwater flow when the locations of the boreholes are fixed in the borehole field.

Study on Operation Strategies of a Hybrid Ground-Source Heat Pump System with Surface Water Heat Exchangers for an Exhibition Building

2014 ◽  
Vol 672-674 ◽  
pp. 436-440
Author(s):  
Yu Dai Liu ◽  
Guo Xia Hu ◽  
Yan Qu
Keyword(s):  
Surface Water ◽  
Heat Pump ◽  
Heat Exchangers ◽  
High Efficiency ◽  
Heat Extraction ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Term Operation ◽  
Ground Source

In this study, a hybrid ground-source heat pump (GSHP) system with surface water heat exchangers is employed in an exhibition building in Shanghai to provide with high-efficiency energy for space cooling and heating and also solve the problem of thermal imbalance of the soil because of a significant imbalance between the annual heat rejection to the ground and the annual heat extraction from the ground. The operation strategies were put forward based on the annual building hourly load to make the hybrid GSHP system in a high-efficiency status during the long-term operation. The results show that the hybrid GSHP system can effectively solve the heat accumulation problem and decrease in system performance for the ten-year long run.

Sign in / Sign up

Export Citation Format

Share Document