Specialist Rental Air Compressor

Refrigeration System Working


         Refrigerators are used in businesses and homes for one reason: to keep food cold. Fridges are vital because they keep food fresh for longer periods of time, reducing food waste in both homes and businesses. They also help companies raise income by preserving food quality for longer periods of time and giving chefs the time and opportunity to make their best dishes.

The World Refrigeration Day was founded in 2019 with the aim of raising awareness of the importance of HVAC-R in society among the international community. For millennia, mankind relied solely on nature to provide ice.

Refrigeration systems in the chemical industry are often made up of standard equipment that can be used in a variety of industries. Due to factors such as temperature range requirements, capacity needs, fluctuating loads, dangerous locations, and the presence of corrosive chemicals, the chemical industry requires design and efficiency that differs from commercial facilities.

The systems are typically designed by experts, with process engineers providing design requirements.


  1. Compressor

The function of compressor in the air dryer system is to regulate the exit and entry of the freon which will be used for the cooling process in the evaporator, the freon that comes out of the compressor is in the form of pressurized gas.


2. Condensor

After the pressurized of freon leaves the compressor, it enters the condensor to absorb heat from the freon so that it will change the phase from gas to liquid .

      3. Refrigerant Filter

High pressure refrigerant liquid then goes through the refrigerant pipe to a filter dryer that removes any particles or air that is entrained in the refrigerant.

      4. Expansion Valve

After the freon is filtered to filter out particles, then the freon enters the expansion valve. There are several functions in the expansion valve, namely to lower the freon temperature, regulate the amount of freon that enters the evaporator, and also to lower the freon pressure before it enters the evaporator.

      5. Evaporator

Basically the function of the evaporator is the opposite of the function of the AC condenser. If the AC condenser serves to absorb heat from the refrigerant and then discharged into the air, the evaporator serves to absorb heat from the air and channel it to the refrigerant. Simply put, the evaporator will absorb the heat carried by the air so that after passing through the evaporator the air becomes cold. 

Evaporators are generally made of aluminum, several types of evaporators based on their construction include plate fin type, serpentine fin type and drawn cup type. Evaporator construction is simple, but has a very important role in the cooling system. The amount of heat from the air absorbed by the evaporator will be equal to the amount of heat dissipated into the air in the condenser. If the air heat absorbed by the evaporator is not the same as the heat dissipated into the air at the condenser, then the system is disturbed. The evaporator is placed in the system at low temperature operation. Therefore freezing or ice formation often occurs on the fins of the evaporator. When warm air hits the evaporator fins and cools to below the condensing temperature, the water vapor carried by the air condenses and sticks to the evaporator fins. If the fins have cooled and reach temperatures below 0 degrees C, it can cause the condensation on the evaporator fins to turn into ice.



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