Coupling a borehole thermal model and MT3DMS to simulate dynamic ground source heat pump efficiency

Ground Water ◽  
2021 ◽  
Author(s):  
Yifei Zong ◽  
Albert J. Valocchi ◽  
Yu‐Feng F. Lin
Keyword(s):  
Heat Pump ◽  
Thermal Model ◽  
Pump Efficiency ◽  
Ground Source Heat Pump ◽  
Ground Source

Cooling Towers as Supplemental Heat Rejection Systems in Ground Source Heat Pumps for Residential Houses in Texas and Other Semi-Arid Regions

2012 ◽  
Author(s):  
Siddharth Balasubramanian ◽  
Jonathan Gaspredes ◽  
Tess J. Moon ◽  
Glenn Y. Masada
Keyword(s):  
Heat Pump ◽  
Cooling Tower ◽  
Cost Effective ◽  
Heat Pumps ◽  
Residential Home ◽  
Test Case ◽  
Pump Efficiency ◽  
Ground Source Heat Pump ◽  
Ground Source Heat Pumps ◽  
Ground Source

Simulation results from a hybrid ground source heat pump model are presented for a residential home that integrates a compact cooling tower into an existing ground source heat pump model. The tower is introduced to assess its impact on the operational and economic performance over that of a GSHP alone. Metrics include initial and lifetime operational costs, ground heating effects, heat pump efficiency, and ability to control the temperature of the conditioned space. A single story, 195 m2 house located in Austin, Texas is used as a cooling-dominated test case. Simulations spanning 10-years of operation show that adding the cooling tower is cost effective, but more importantly, it extends the lifetime of the borehole system and maintains the heat pump efficiencies at high levels.

Feasibility Study of a Residential Hybrid Ground Source Heat Pump System

2016 ◽  
Vol 8 (3) ◽  
Author(s):  
Siddharth Balasubramanian ◽  
Jonathan L. Gaspredes ◽  
Tess J. Moon ◽  
Glenn Y. Masada
Keyword(s):  
Heat Pump ◽  
Temperature Effects ◽  
Cooling Tower ◽  
Ground Temperature ◽  
Weather Data ◽  
Base Case ◽  
Pump Efficiency ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Ground Source

A residential hybrid ground source heat pump (HGSHP) model is presented, which integrates a compact cooling tower with a GSHP. The base case GSHP model is for a single story, 195 m2 house with a 14 kW heat pump and four 68.8 m deep vertical boreholes and uses Austin, TX weather data. The GSHP model was run for a range of supplemental heat rejection (SHR) capacities of an unidentified device located between the heat pump outlet and ground loop inlet, and estimates of improved heat pump performance and ground temperature effects are presented. Then, a compact closed wet cooling tower (CWCT) model is presented and coupled to the GSHP model. The tower's 7 kW capacity represents the smallest commercially available cooling tower. Each of the four HGSHP boreholes was reduced to 26.5 m. The operational and economic performance of the HGSHP is compared to a GSHP alone. Metrics include estimates of initial and lifetime operational costs, ground temperature effects, and heat pump efficiency. Simulations for ten years of operation show that adding the compact CWCT is cost effective, extends the lifetime of the borehole system, and maintains high heat pump efficiencies.

scholarly journals Design and Experimental Testing of a Ground Source Heat Pump System Based on Energy-Saving Solar Collector

2016 ◽  
Vol 142 (3) ◽  
pp. 04015022 ◽  
Author(s):  
Zhitao Zheng ◽  
Ying Xu ◽  
Jianghui Dong ◽  
Linfang Zhang ◽  
Liping Wang
Keyword(s):  
Energy Saving ◽  
Heat Pump ◽  
Solar Collector ◽  
Experimental Testing ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

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

10-year simulation of photovoltaic-thermal road assisted ground source heat pump system for accommodation building heating in expressway service area

Solar Energy ◽  
2021 ◽  
Vol 215 ◽  
pp. 459-472
Author(s):  
Bo Xiang ◽  
Yasheng Ji ◽  
Yanping Yuan ◽  
Dan Wu ◽  
Chao Zeng ◽  
...  
Keyword(s):  
Heat Pump ◽  
Service Area ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source

scholarly journals Profitability of Various Energy Supply Systems in Light of Their Different Energy Prices and Climate Conditions

Buildings ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 100 ◽  
Author(s):  
Elaheh Jalilzadehazhari ◽  
Georgios Pardalis ◽  
Amir Vadiee
Keyword(s):  
Renewable Energy ◽  
Heat Pump ◽  
Energy Supply ◽  
Ground Source Heat Pump ◽  
Energy Prices ◽  
Single Family ◽  
Climate Zones ◽  
Ground Source ◽  
Supply Systems ◽  
Energy Supply Systems

The majority of the single-family houses in Sweden are affected by deteriorations in building envelopes as well as heating, ventilation and air conditioning systems. These dwellings are, therefore, in need of extensive renovation, which provides an excellent opportunity to install renewable energy supply systems to reduce the total energy consumption. The high investment costs of the renewable energy supply systems were previously distinguished as the main barrier in the installation of these systems in Sweden. House-owners should, therefore, compare the profitability of the energy supply systems and select the one, which will allow them to reduce their operational costs. This study analyses the profitability of a ground source heat pump, photovoltaic solar panels and an integrated ground source heat pump with a photovoltaic system, as three energy supply systems for a single-family house in Sweden. The profitability of the supply systems was analysed by calculating the payback period (PBP) and internal rate of return (IRR) for these systems. Three different energy prices, three different interest rates, and two different lifespans were considered when calculating the IRR and PBP. In addition, the profitability of the supply systems was analysed for four Swedish climate zones. The analyses of results show that the ground source heat pump system was the most profitable energy supply system since it provided a short PBP and high IRR in all climate zones when compared with the other energy supply systems. Additionally, results show that increasing the energy price improved the profitability of the supply systems in all climate zones.

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