Air source heat pump is mainly composed of compressor, expansion valve, fin heat exchanger and bushing heat exchanger. It drives compressor and motor by power input to realize heat absorption of fin heat exchanger and heat release of bushing heat exchanger. The heating effect is as high as 380%. It is one of the most energy-saving heat source equipment at present. Safety, environmental protection and high efficiency are the main characteristics of the process.
Heart Component-Compressor
Compressor, as the heart component of air source heat pump, is equivalent to the CPU of computer and the heart of human body. It can drive the circulation of refrigerant, realize the process of thermal expansion and contraction, and let refrigerant realize the physical changes of evaporation, heat absorption and condensation. At present, the commonly used brands of compressor are grain wheel compressor, Hitachi compressor. Ocean compressor, Dajin compressor, known as the industry's four major brands, in the heat pump industry, the grain wheel brand compressor is the best.
Throttle Device-Capillary Electronic Expansion Valve and Thermal Expansion Valve
Throttle valves can usually be divided into capillary throttle, thermal expansion valve throttle (internal balance, external balance) and electronic expansion valve throttle. By changing the pressure of refrigerant, refrigerant can be liquefied and gasified, and the temperature difference between inlet and outlet air, return air temperature and its setting value can be detected. Data acquisition, microprocessor processing, control the opening of expansion valve to meet the system load requirements. The advantage of electronic expansion valve is that it can accurately control the refrigerant flow rate, so as to achieve precise control of evaporation temperature. Usually it is used in places where the precision of temperature control is high.
Exothermic Component-Casing Heat Exchanger
Casing heat exchanger is the carrier that transfers part of heat from hot fluid to water. It uses high-efficiency threaded copper tube and outsources the treated galvanized steel tube to realize the process of refrigerant encapsulating water, so that the high-temperature refrigerant gas fully contacts with water and achieves better heat transfer effect.
Fin Heat Exchanger-Absorbing Air Component
Fin heat exchanger mainly uses clear water film aluminum foil, bridge-mounted ventilation system, so that air fully contacts with the heat transfer area, more efficient absorption of heat in the air components.
Advantages of air source heat pump:
1. The air-conditioning system combines heat and cold sources, and is placed on the roof of buildings. There is no need to set up special refrigeration room and boiler room. It is undoubtedly a more suitable choice for building air-source heat pump chillers and water heaters in busy urban areas.
2. No cooling water system, no power consumption of cooling water system, no cooling water loss. More energy-saving, environmental protection.
3. Because there is no boiler, no corresponding fuel supply system, no smoke, no cooling water, the system is safe, sanitary and simple. For heating pipe specialty, the boiler room is most likely to have potential safety hazards. In addition, many cases of Legionella infection caused by cooling water pollution have been reported. From the perspective of safety and hygiene, air source heat pump has obvious advantages.