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How Does Air to Water Heat Pump Work

  • By:Heyi
  • Date:2021/11/20

A heat pump is an electrical device that draws heat from one place and passes it to another. A heat pump has been widely used in Europe and North America. Refrigerators and air conditioners are common examples of this energy transferring heat pump technology.

The heat pump works according to the Carnot cycle system. This air source heating system needs 4 essential components and 1 heat transferring carrier.

1. Heat transferring carrier: Refrigerant, for example, R410a, R32, or R134a.  It can absorb the heat from the air, then it carries the heat to the other side which needs the heat. During this period, the refrigerant changes its status from gas to liquid.

2. Compressor: It is an electric-powered device. It can compress the refrigerant from gas to liquid. At the same time, it also keeps the refrigerant flowing in the copper tube system.

3. Evaporator: It contains some copper tubes to allow the refrigerant to flow inside. The refrigerant absorbs the heat in the air when it is evaporated in the evaporator, and stores the heat in the refrigerant, and flows to the next part.

4. A condenser is a heat exchanger and also contains many tubes. The refrigerant flows in these tubes. When the high-temperature refrigerant is transformed into liquid status in the condenser, the heat carried by the refrigerant will be conducted to the nearby water through the tube. The working process of the condenser is a heat release process, so the condenser temperature is always higher.

5. Throttle valve is a device that adjusts refrigerant flow and pressure by abruptly reducing the cross-section of the tube. The throttle is usually installed between the condenser and the evaporator. When the refrigerant liquid flows out from the condenser and passes through the throttle valve, the function of the throttle valve is to reduce the pressure and temperature of the refrigerant.

The compressor exchanges refrigerant between the evaporator and the condenser. After the refrigerant is compressed by the compressor, heat is released into the condenser, And the condenser will transfer the heat to water around. Water temperature will be raised up in this heat release process.

According to the above air to water heat pump working principle. Aircal heat pump has developed many products as below ranges:

1. Swimming full inverter pool heat pump. The hot water output highest is 40℃. Because when people swim, they will not need high-temperature water.

2. DC Inverter heat pump (multifunction heat pump for house heating, cooling, and domestic hot water). The hot water output is up to 55℃, and with the help of an auxiliary electrical heater, the highest temperature can be 70℃. This product is designed for space heating and domestic hot water.

3. Domestic water heating heat pump: The hot water output can be up to 70℃. This product is designed for residential hot water. 70℃ high temperature is for sterilization mode. All in one and split type available.

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