REFRIGERATOR IN A ROOM
You are locked into an empty room with only a working refrigerator plugged into a standard electric outlet. The room is uncomfortably warm, and your goal is to cool the room to the maximum extent possible. What can you do?
Most candidates immediately think about opening the refrigerator to cool the room down. You can admit to that thought, but be wary. First of all, first impressions are never correct. Second, think deeper. What does a refrigerator really do? It’s really a heat pump. It takes heat away from the contents of the refrigerator and empties the heat into the room. Opening the door of an operating refrigerator would be the worst move.
Solution: Unplug the refrigerator and open the door, allowing the
cooler air in the refrigerator compartment to cool the room air a little bit.
That’s the best you can do.
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