refrigeration cycle, how to work refrigeration systems

Basic refrigeration cycle

Un-useful superheat increase in temperature which increases compressor load. As much as possible avoid direct contact between the pipe and the surrounding air by insulating the suction pipe.

the compression process

 pressurized refrigerant gas and low temperatures are raised so that the temperature is higher than the cooling media in the condenser. In this compression process the refrigerant experiences a very high superheat.

De-superheating process

the temperature of the refrigerant decreases, but does not change its shape, the refrigerant is still in the form of
Condensation process changes in the form of refrigerant from gas to liquid without changing its pressure.

Sub-cooling process

in the condenser refrigerant which is already in liquid form still discharges heat into the surrounding air so that it has decreased temperature. Very useful to ensure the refrigerant is in perfect liquid state.

Sub-cooling process

in liquid pipes liquid refrigerant is still experiencing a decrease in temperature because the temperature is still above the ambient air temperature. Liquid line pipe is not insulated, so that heat transfer occurs to the air, the aim is to increase the refrigeration capacity.

Expansion/pressure reduction process

Refrigerant in liquid form is reduced so that the saturation temperature is below the cooled room temperature, the goal is that liquid refrigerant evaporates easily in the evaporator by absorbing heat from the air passed to the evaporator
There was a change in the shape of the refrigerant from liquid to bubble gas due to this pressure drop. So the refrigerant coming out of the expansion valve / into the Evaporator in the form of a mixture of liquid and bubble vapor.

Evaporation process

low temperature refrigerant absorbs heat from the air that is passed into the evaporator. There is a change in the shape of the refrigerant from liquid to gas. There is also a decrease in the temperature of the air coming out of the evaporator because the heat from the air is absorbed by the refrigerant

Superheat process

 in the evaporator Low temperature refrigerant gas still absorbs heat from the air because the temperature is still below the air temperature. The temperature of the refrigerant has increased. This superheat is useful to ensure that the refrigerant is in perfect gas before entering the compressor.
This process again and again then make cool.

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