The cost of photovoltaic power generation is high
It is not suitable for personal use at present. The cost of photovoltaic energy production is high and the payback time is too long. It will be 20 years before. free electricity can be used.
Geothermal heat pumps and air source heat pumps should now enter many homes quietly.
The differences and respective characteristics of the geothermal water heat pumps
The working principle of geothermal (water) heat pumps
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It uses water and underground energy (groundwater , soil or surface water) to exchange heat and cold in the form of cold. and heat source from water heat pump. In winter, heat from underground energy is “extracted” and provided for indoor heating. The ground can be a “heat source” in summer, when the heatr interior is extracted and supplied. Discharged into groundwater, soil or surface water, soil can be a “cold spring”. It has the advantages of high efficiency, energy saving, environmental economy and protection, safety and reliability and automatic operation.
What are the advantages of geothermal heat pumps compared to air source heat pumps?
Compared to air source heat pumps, geothermal heat pumps have many advantages : (1) Low temperature fluctuations throughout the year. The temperature is higher than the air temperature in winter and lower than the air temperature in summer. Therefore, the heating and cooling coefficients of geothermal heat pumps are higher than those of air source heat pumps, usually above 40%, so this can be the case. save energy and costsby around 40%. (2) No defrosting is required for winter operation, reducing losses due to freezing and defrosting. (3) Earth source has better energy storage effect.