GPT on Question 7, Sep 21
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 closed loop of refrigerant.
First, the compressor squeezes the refrigerant gas, raising its pressure and temperature. The hot refrigerant then flows through condenser coils, usually on the back or underneath the refrigerator. There, it releases heat into the room and condenses into a liquid.
Next, the liquid passes through an expansion valve or narrow capillary tube. Its pressure drops suddenly, making it much colder. The cold refrigerant enters the evaporator coils inside the refrigerator, where it absorbs heat from the air and food. As it absorbs heat, it evaporates back into a gas.
The gas returns to the compressor, and the cycle repeats. A thermostat monitors the interior temperature and switches the compressor on and off as needed. Fans may circulate cold air inside and help release heat outside. The refrigerator does not create cold; it removes heat from its interior and transfers that heat into the room.
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