In industrial refrigeration systems, refrigeration and heat exchange equipment is generally classified according to the role of heat exchangers in refrigeration devices, which can be divided into evaporators, condensers, economizers, intercoolers, coolers, liquefiers, etc. According to the structure of the heat exchanger, it can be divided into shell and tube heat exchanger and plate heat exchanger. Evaporator The evaporator is the main heat exchange equipment of the refrigeration system. The refrigerant liquid is used to evaporate at a lower temperature and absorb the heat of the cooled medium to reduce its temperature. The form and structure of the evaporator is mainly used in the refrigerant system to cool water, salt water, glycol and other refrigerants, and then the refrigerant is used to cool the object to be cooled.

The condenser is a heat exchange device, which uses the ambient cooling medium (air or water) to take away the heat from the high-temperature and high-pressure refrigerant vapor from the compressor, so that the high-temperature and high-pressure refrigerant vapor is cooled and condensed into a high-pressure and normal-temperature refrigerant liquid .

Propellent provide large range of heat exhangers, which applications from freezing and cold storage cooling in industrial premises to refrigeration