Principle of Refrigeration System and Electric Circuit Diagram
Circuit Diagram
The principle of the compression refrigeration system revolves around four main steps:
"compression," "condensation," "throttling," and "vaporization."
The process operates as follows:
▪ Compression: The compressor takes in the coolant, which has absorbed heat in the evaporator,
turning it into a high-pressure, high-temperature gas.
▪ Condensation: In the condenser, the coolant dissipates heat into the air. As a result, the coolant
re-liquefies.
▪ Throttling: This phase is executed by the capillary, which throttles the re-liquefied coolant into
the evaporator at a low pressure.
▪ Vaporization: Upon entering the evaporator, the liquefied coolant quickly boils and vaporizes into
a gas due to the sudden drop in pressure. In this phase, it absorbs heat from inside the refrigerator.
Finally, the compressor again takes in the low-pressure, low-temperature gaseous coolant.
The process repeats itself in a cycle, enabling the refrigerator to maintain its cool temperature.
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