GPT on Question 7, Sep 26
Answer in plain prose only. Do not use bullet points, headers, bold text, or lists. Explain how a refrigerator works.A refrigerator moves heat from inside the cabinet to the surrounding room using a circulating refrigerant.
The process begins in the evaporator coils inside the refrigerator. Liquid refrigerant enters these coils at low pressure, boils, and becomes a gas. Evaporation absorbs heat from the air and food inside, making the interior colder.
The compressor then draws in the refrigerant gas and compresses it. This raises both its pressure and temperature. The hot, high-pressure gas flows through the condenser coils, usually located on the back or underneath the refrigerator. There, it releases heat into the room and condenses back into a liquid.
Next, the liquid passes through a narrow expansion valve or capillary tube. Its pressure drops sharply, cooling the refrigerant before it returns to the evaporator. The cycle then repeats.
A thermostat monitors the temperature and switches the compressor on and off as needed. Insulation and tight door seals slow heat from entering, while fans in many refrigerators circulate cold air and help release heat from the condenser. A refrigerator therefore does not create cold; it removes heat from its interior and transfers that heat to the room.
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