The working principle and characteristics of air-cooled chillers are as follows:
The air-cooled chiller is an industrial cooling equipment equipped with a compression refrigeration circuit, using air as the cooling medium for the condenser and water as the refrigerant. The air-cooled chiller mainly consists of four main components: compressor, condenser, evaporator, and throttling device. Due to its advantages of easy installation and no need for cooling water systems, it is widely used in industrial temperature control and air conditioning equipment.

Working principle of air-cooled chiller:
During the operation of an air-cooled chiller, the refrigerant absorbs heat from the object being cooled in the evaporator and vaporizes. The compressor continuously extracts the generated gas from the evaporator and compresses it into high-temperature, high-pressure steam. The refrigerant vapor is then sent to the condenser for heat exchange with air and condenses into liquid after releasing heat. After being depressurized by the throttling mechanism, it enters the evaporator and vaporizes again, absorbing heat from the object being cooled. This cycle repeats itself.

Characteristics of air-cooled chiller unit:
(1) Due to different heat transfer temperature differences, under the same outdoor environmental conditions, the condensation temperature of air-cooled chillers is higher than that of water-cooled chillers. Therefore, under the same cooling capacity, the power consumption of air-cooled chillers will be higher. In terms of energy efficiency, water-cooled chillers typically have a cooling capacity 300-500 Kcal/h higher than air-cooled chillers.
(2) The air-cooled chiller unit avoids the problems of condenser scaling and water pipe blockage caused by poor water quality in areas, and saves water resources. However, the heat transfer efficiency of the finned condenser it uses is greatly affected by the accumulation of ash and scale. A dust filter mesh must be installed in front of the heat dissipation finned tubes, and regular cleaning is required.
(3) Compared to water-cooled chillers, air-cooled chillers use finned condensers, which directly use fans to force air flow and remove refrigerant heat without the need for other auxiliary equipment. This eliminates the need for cooling towers, cooling water pumps, and cooling pipeline systems. Therefore, it has certain advantages in installation, especially for small chillers with low cooling capacity requirements, which are more convenient to move!