Why does wrapping a bottle/ can in a wet paper towel cool it faster when placed in a freezer

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Why does wrapping a bottle/ can in a wet paper towel cool it faster when placed in a freezer

In: Physics

Water transfers heat faster than air does, so the wet paper towel absorbs heat from the bottle/can faster than just putting it in the cold freezer air.

Because evaporating water is very energy intensive.

Water molecules are polar, which means that they have a slight positive charge on one side and a slight negative charge on the other. This makes them cling together like magnets. To make water evaporate, you need to break these bonds, which requires a lot of energy.

Sweating also works by the same principle.