Question

Explain to me how this water cooler works?

Answer 1

Goodday all, ... I think the idea is that the air gonig over the small droplets of water will strip off molecules that are close to evaporation. When they evaporate they pull heat from the last of the water in that drop, cooling the drop.

Answer 2

Hey mate ^_^

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Answer:
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=> The water bottle sits on top of a small water tank that is sealed by the neck of the bottle.

=> As the system is sealed, the only way for water to leave is through the dispenser at the bottom. 

=> Air enters through a valve at the same time as water is dispensed, the air displaces the water, preventing a vacuum.

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