Hydrothermal Enhancement of Horizontal Ground Source Heat Pump

2020 ◽  
Author(s):  
Anthony A. DiCarlo
Keyword(s):  
Moisture Content ◽  
Heat Pump ◽  
Ground Source Heat Pump ◽  
Dynamics Model ◽  
Computational Fluid Dynamics Model ◽  
Winter Conditions ◽  
Ground Source ◽  
Thermal Phenomenon ◽  
Novel Method ◽  
Porous Soil

Abstract This study investigates a novel method for controlling the thermal conductivity of soil to enhance the performance of a horizontal ground source heat pump (GSHP). The method calls for irrigation lines to be buried in parallel with the ground pipes for the distribution of water in the area around the pipes thereby contributing to and controlling the soil’s moisture content. The controlled distribution of water within the porous soil promotes heat paths improving the performance of the GSHP system based on the transient seasonal spatial-temporal conditions. A computational fluid dynamics model of the porous soil is developed to simulate the hydro-thermal phenomenon over a short duration (40 hours) during winter conditions. The model is employed to investigate the heat transfer rate between the ground and pipes when the soil’s moisture content is modified and how this affects performance.

Application of Heat Pump Energy-Saving Control Temperature Technology in Large Warehouse on Preservation Quality of Rice

2013 ◽  
Vol 724-725 ◽  
pp. 889-892
Author(s):  
Li Nan Xu ◽  
Xi Hong Li ◽  
Yuan Yuan Chen ◽  
Xia Liu
Keyword(s):  
Biological Activity ◽  
Moisture Content ◽  
Heat Pump ◽  
Pump Energy ◽  
Ground Source Heat Pump ◽  
Control Temperature ◽  
Ground Source ◽  
Energy Saving Control ◽  
Total Bacteria

Effect of ground source heat pump (GSHP) on control large warehouse temperature and the quality of grain during the storage in it was investigated. GSHP exhibited a better control in temperature in warehouse and grain heap. Compared with traditional warehouse, the temperature in warehouse installed GSHP and grain heap in which were all lower than 20°C in a whole year. The parameters of biological activity of grain were determined. At the end of storage, the moisture content of rice in the test warehouse was 0.39% higher than control and the total bacteria counts of rice were one time higher in the control warehouse than that in the test warehouse.

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

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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