I gotta know how my ice cream stays cold
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You know your AC on the windowsill? It’s called a heat pump.
When the fridge has the same thing, hidden in it. The cold part is on the in side and the hot part is on the out side (i.e., towards the house).
It basically takes heat from inside the fridge and put it outside in the house. The heat pump can work even if the house is already warmer than the fridge (just like you can use a heat pump to cool the house when it’s hot outside or warm it up when it’s cold).
The fridge is insulated so the inside remains cold more easily so the pump doesn’t need to be as powerful or work as much as the windowsill A/C.
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