lithium 3400mah 3.7v 18650 battery.Application principles of ground source heat pump technology

　　Heat pump technology is a technology that flows heat from a low-level heat source to a high-level heat source under the drag of high potential energy. It can convert low-grade thermal energy that cannot be used directly (such as air, soil, water, solar energy, industrial waste heat, etc.) into usable high-level energy, thereby achieving the purpose of saving part of the high-level energy (coal, oil, natural gas, electricity, etc.) .

　　The use of low-energy heat pump technology can save fuel, rationally utilize energy, and reduce environmental pollution, as a way to pay equal attention to energy conservation and environmental protection. Studies have shown that compared with the energy consumption of regional boiler rooms, the energy consumption of a heat pump station with the same capacity: when using river water (5~6.6℃) as the low-level heat source, the annual coal saving rate is 12.68~14.08%; when using seawater (12~ When 13.6℃) is used as the low-level heat source, the annual coal-saving rate is 21.59-39.98%; when industrial wastewater (18-20℃) is used as the low-level heat source, the annual coal-saving rate is 39-39.98%.

　　The efficiency of the heat pump is related to the temperature difference between the indoor and outdoor environments of the building. The smaller the temperature difference, the higher the efficiency of the heat pump. Studies have shown that from the perspective of defrosting during winter operation of the heat pump unit, the use of air source heat pumps is not only related to the outdoor temperature, but also closely related to the relative humidity of the outdoor atmosphere, which greatly limits its scope of use. Using a ground source heat pump system, since the temperature of the soil is closer to the indoor temperature than the outdoor air temperature, if properly designed, the ground source heat pump can have higher efficiency and better reliability than the air source heat pump.

　　In addition, because the heat capacity of water with the same volume flow is 3500 times that of air, the heat exchange effect between water and refrigerant is much better than the convection heat exchange between air and refrigerant. Therefore, the heat exchange coil of a ground source heat pump is better than that of an air source heat pump. Being much smaller and having fewer components, a geothermal heat pump system can have lower operating costs.

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