The impact of ventilation parameters on thermal comfort and energy-efficient control of the ground-source heat pump system

2018 ◽  
Vol 179 ◽  
pp. 324-332 ◽  
Author(s):  
Jian Fang ◽  
Zhuangbo Feng ◽  
Shi-Jie Cao ◽  
Yelin Deng
Keyword(s):  
Thermal Comfort ◽  
Heat Pump ◽  
Energy Efficient ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Efficient Control ◽  
The Impact

scholarly journals Impact of Standing Column Well Operation on Carbonate Scaling

Water ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 2222
Author(s):  
Léo Cerclet ◽  
Benoît Courcelles ◽  
Philippe Pasquier
Keyword(s):  
Heat Pump ◽  
Urban Areas ◽  
Calcium Concentration ◽  
Mitigation Measures ◽  
Ground Source Heat Pump ◽  
Pump System ◽  
Heat Pump System ◽  
Ground Source ◽  
Field Samples ◽  
The Impact

Standing column well constitutes a recent promising solution to provide heating or cooling and to reduce greenhouse gases emissions in urban areas. Nevertheless, scaling issues can emerge in presence of carbonates and impact their efficiency. Even though a thermo-hydro-geochemical model demonstrated the impact of the water temperature on carbonate concentration, this conclusion has not been yet demonstrated by field investigations. To do so, an experimental ground source heat pump system connected to a standing column well was operated under various conditions to collect 50 groundwater samples over a period of 267 days. These field samples were used for mineral analysis and laboratory batch experiments. The results were analyzed with multivariate regression and geochemical simulations and confirmed a clear relationship between the calcium concentrations measured in the well, the temperature and the calcite equilibrium constant. It was also found that operating a ground source heat pump system in conjunction with a small groundwater treatment system allows reduction of calcium concentration in the well, while shutting down the system leads to a quite rapid increase at a level consistent with the regional calcium concentration. Although no major clogging or biofouling problem was observed after two years of operation, mineral scales made of carbonates precipitated on a flowmeter and hindered its operation. The paper provides insight on the impact of standing column well on groundwater quality and suggests some mitigation measures.

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
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