GPT on Question 7, Sep 24
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. It does this with a sealed loop of refrigerant, a fluid that readily changes between liquid and gas.
Inside the refrigerator, liquid refrigerant passes through an expansion valve or narrow tube, which lowers its pressure and temperature. The cold refrigerant then flows through the evaporator coils. As it absorbs heat from the food and air inside the cabinet, it evaporates into a gas. A fan often circulates the cooled air throughout the refrigerator and freezer compartments.
The compressor then squeezes the refrigerant gas, raising its pressure and temperature. This hot, high-pressure gas travels through condenser coils, usually located behind or underneath the appliance. It releases heat into the room and condenses back into a liquid. The liquid returns to the expansion device, and the cycle repeats.
A thermostat monitors the temperature inside the refrigerator and switches the compressor on when more cooling is needed. Insulation and tight door seals slow the flow of heat into the cabinet, while a defrost system prevents excessive ice from building up on the evaporator coils.
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