Final answer:
In a refrigeration system, the evaporator converts liquid refrigerant into gas to absorb heat inside the refrigerator, while the compressor then compresses the gas back into a liquid, releasing heat outside the system.
Explanation:
The evaporator converts liquid refrigerant into gas in a properly functioning refrigeration system. To achieve cooling, the system evaporates the liquid refrigerant, which absorbs heat inside the refrigerator, cooling the interior. The compressor then converts the gas back into a liquid by compressing it, releasing heat outside the system through the condenser.
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