Heat recovery refers to the recovery and reuse of a large amount of waste heat discharged to the outside world during the operation of the chiller in a certain way as the user's final or primary heat source.

The heat released by the unit through the condenser is usually discharged to the surrounding environment by the cooling tower or cooling fan, which is a huge waste for places requiring heat, such as hotels, factories, hospitals, etc., and also brings some waste heat pollution to the surrounding environment.

The heat recovery technology is to recycle a large amount of waste heat discharged to the outside world during the operation of the chiller in a certain way as the final or primary heat source of users.

The high-temperature and high-pressure gaseous refrigerant discharged from the compressor enters the heat recovery device to release heat to heat the domestic water (or other gas-liquid substances), and then passes through the condenser and expansion valve to absorb the heat of the cooling medium in the evaporator to become the low-temperature and low-pressure gaseous refrigerant and return to the compressor.

According to the amount of heat recovered by the heat recovery device, the heat recovery can be divided into partial heat recovery and total heat recovery. Among them, partial heat recovery can only recover part of the heat discharged by the chiller, while total heat recovery basically recovers all the heat discharged into the environment by the system.

According to the different places of use and the specific needs of the user terminal, the heat recoverers can adopt many different forms, such as shell and tube type, plate type, fin tube type, sleeve type, etc.