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Refrigeration cycle basically is a thermodynamiccycle utlizing the temperature-pressure relashiship for rrefrigerants which those relashions are visible at low temperatures.
1. condensation in the condinser: refrigerant at high temperature and pressure enters the condenser and heat is being rejected to either air or water to result in a high pressure liquid refrigerant.
2. expanssion via the expanssion valve: expanding the high pressure liquid refrigerant results in dropping the pressure which drops the temperature of the refrigerant further.
3. Evaporation in the evaporator: cold liquid refrigerant absorbs the heat from the cooling media (air or water) which results in vaporizing the refrigerant.
4. Compression via the compressor: vaporized refrigerant get compressed in the compressor to high pressure/temperature vapor rifrigerant which feeds the condinser.
The cycle repeats.
simple diagrame of refregeration
