Compression refrigeration systems consist of:
Compressor: Has the function of compressing the fluid generating a pressure difference between the high and low side and refrigerant circulation.
Condenser: It is a heat exchanger, has the function of rejecting the heat of the fluid in the external environment. Thus, the state of the refrigerant fluid changes from gaseous to liquid.
Expansion device (capillary tube): A tube the thickness of a strand of hair, which causes a restriction in the circulation of refrigerant in the system with the high and low side divider.
Evaporator: is a heat exchanger, has the function of absorbing heat from the external environment to the fluid. Thus, the state of the refrigerant fluid changes from liquid to gas.
Refrigerant: Any substance in the liquid or gaseous state can be considered a refrigerant. It is responsible for heat transfer. An example is Water a great coolant, in cooling we call it R-718. Atmospheric air we call R-729.
In Air Conditioners we will use two types R-22 and R410a.
