Study on a design method for hybrid ground heat exchangers of ground-coupled heat pump system

2017 ◽  
Vol 76 ◽  
pp. 394-405 ◽  
Author(s):  
Kejuan Wei ◽  
Wenxin Li ◽  
Jiarong Li ◽  
Yong Wang ◽  
Lu Zhang
Keyword(s):  
Heat Pump ◽  
Heat Exchangers ◽  
Design Method ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Heat Exchangers ◽  
Ground Coupled Heat Pump

Effect of the Circulation Flow Velocity in Ground Heat Exchangers on System Operation

2014 ◽  
Vol 580-583 ◽  
pp. 2457-2460
Author(s):  
Zi Shu Qi ◽  
Qing Gao ◽  
Yan Liu ◽  
Zhen Hai Gao ◽  
Li Bai
Keyword(s):  
Flow Velocity ◽  
Heat Pump ◽  
Heat Exchangers ◽  
Engineering Practice ◽  
Fluid Temperature ◽  
Circulation Flow ◽  
Pump System ◽  
Heat Pump System ◽  
Computing Platform ◽  
Ground Heat Exchangers

The heat pump system by using earth energy is increasing very rapidly. In this paper, by studying the underground heat exchanger heat transfer mode, the computing platform for ground source heat pump system was established. Through a engineering case, the influence character of the circulation flow velocity in ground heat exchangers on the fluid temperature, the heat pump power consumption, and the length of system were analyzed, which provide an approach for system engineering design and operation prediction, and for the thermodynamic analysis of performance of system year by year and prospective study to guide the engineering practice.

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.

Sign in / Sign up

Export Citation Format

Share Document