Water Source Heat Pumps
Water source heat pump is an air-conditioning technology that uses solar energy resources stored in earth water as cold and heat sources for energy conversion. By inputting a small amount of high-grade energy (such as electric power), the transfer of low-temperature thermal energy to high-temperature energy can be realized. Water is used as heat source of heat pump heating in winter and cold source of air conditioning in summer. That is to say, heat in buildings is "taken out" in summer and released into water. Because of the low temperature of water source, heat can be efficiently taken away to achieve the purpose of indoor cooling in summer. In winter, heat energy is "extracted" from water source by water source heat pump units and sent to buildings for house heating. Shallow water sources on the earth's surface (generally less than 1,000 meters), such as groundwater, surface rivers, lakes and oceans, absorb considerable radiation energy from the sun into the earth, and the temperature of water sources is generally very stable.
Above are the heat sources and working principles of the three heat pump products, and following are their operating conditions.
Air source heat pumps are suitable for places with air. Based on the current technology, they can be used in areas above minus 25℃ for hot water, heating and cooling.
Ground source heat pumps are suitable for single villas or villas with gardens, because the installation of ground source heat pumps needs to drill wells. And even vertical closed drilling requires a large area. In addition, whether ground source heat pumps can be used or not should be based on geological survey.
Water source heat pumps are suitable for areas with abundant water resources, such as municipal domestic wastewater, industrial wastewater, mine wastewater, oilfield wastewater and cooling water of thermal power plants, which are discharged after utilization. Natural water resources are not the best choice for water source heat pumps.
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