Determination of optimal well locations and pumping/injection rates for groundwater heat pump system

Geothermics ◽  
2021 ◽  
Vol 92 ◽  
pp. 102050
Author(s):  
Dongkyu Park ◽  
Eunhee Lee ◽  
Dugin Kaown ◽  
Seong-Sun Lee ◽  
Kang-Kun Lee
Keyword(s):  
Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Groundwater Heat Pump ◽  
Injection Rates

scholarly journals Impact of Boundary Conditions on a Groundwater Heat Pump System Design in a Shallow and Thin Aquifer near the River

2017 ◽  
Vol 9 (5) ◽  
pp. 797 ◽  
Author(s):  
Longcang Shu ◽  
Rui Xiao ◽  
Zhonghui Wen ◽  
Yuezan Tao ◽  
Peigui Liu
Keyword(s):  
Boundary Conditions ◽  
System Design ◽  
Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Groundwater Heat Pump

scholarly journals Design of Groundwater Heat Pump Systems. Principles, Tools, and Strategies for Controlling Gas and Precipitation Problems

Energies ◽  
2019 ◽  
Vol 12 (19) ◽  
pp. 3657 ◽  
Author(s):  
Sondre Gjengedal ◽  
Lars A. Stenvik ◽  
Pål-Tore S. Storli ◽  
Randi K. Ramstad ◽  
Bernt O. Hilmo ◽  
...  
Keyword(s):  
System Design ◽  
Heat Pump ◽  
Precipitation Reaction ◽  
Pump System ◽  
Heat Pump System ◽  
Traditional System ◽  
Heating And Cooling ◽  
Groundwater Heat Pump ◽  
Town Center ◽  
The Town

The utilization of groundwater heat pump systems is increasing in Norway, which are currently widely employed for heating and cooling applications in the town center of Melhus. The investigations of the Melhus installations are detecting gas exsolution as a possible trigger for precipitation reaction that causes incrustation of iron and manganese compounds in the systems. This paper discusses risks associated with gas exsolution and considers gas exsolution triggers in a typical Norwegian groundwater heat pump (GWHP) system configuration. The concept of the solubility grade line (SGL) is developed and suggested as a tool for optimizing the design. Based on SGL analysis and the intention of avoiding gas exsolution during heat production, an alternative system design in the same aquifer is presented and compared. The analyses show that the traditional system design is predisposed to gas clogging risks and prone to vacuum pressures in parts of the system. The alternative design mediates the risks by adjusting the well and piping configuration and by applying a backpressure technique. The results demonstrate how the groundwater heat pump system design can be customized according to local aquifer conditions to avoid gas exsolution during operation. It is recommended that the presented method of analysis should be utilized in dimensioning of systems and included in the monitoring scheme of the systems.

Comparison of Thermoelectric and Vapor Cycle Technologies for Groundwater Heat Pump Application

1989 ◽  
Vol 111 (4) ◽  
pp. 353-357 ◽  
Author(s):  
V. C. Mei ◽  
F. C. Chen ◽  
B. Mathiprakasam
Keyword(s):  
Heat Pump ◽  
State Of The Art ◽  
Coefficient Of Performance ◽  
Inlet Temperature ◽  
Groundwater Temperature ◽  
Pump System ◽  
Heat Pump System ◽  
Mode Operation ◽  
Groundwater Heat Pump ◽  
Heating Mode

The performance of a groundwater thermoelectric (TE) heat pump system, based on today’s state-of-the-art TE materials, was calculated and compared with that of a conventional groundwater heat pump under the same water inlet temperature and flow rate. It was found that the TE system was competitive for cooling, particularly for groundwater temperatures below 18° C (64° F). The TE system performed poorly for heating mode operation. A cooling coefficient of performance (COP) of 6.4 could be realized by a properly designed TE system at a groundwater temperature of 13° C (55° F), compared with a COP of 4.35 for a conventional heat pump. For heating mode operation at the same water temperature, the TE system achieved a COP of 1.72, while the conventional heat pump performed at a COP of 3.72. Use of TE systems should be considered in areas where year-round cooling load dominates.

Sign in / Sign up

Export Citation Format

Share Document