ElI5: Why can’t we use a renewably powered, industrial sized ice machine to replenish and cool the arctic?
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Our cooling systems are all designed around the concept of moving heat away from somewhere. When you run an air conditioner, the exterior gets hot. When you run a refrigerator, the coil on the back gets warm.
If you just put a window shaker air conditioner in the middle of a room and turned it on, the average temperature of the room would not change. It might push cold air out the front, but it’s pushing an equivalent amount of warm air out the back.
So we can never really cool a large open thing like the arctic. We can only ever cool closed off small boxes, like houses or fridges.
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