Why isn’t water temperature taken into account when calculating evaporation rate?

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Basically the title. First I look up a calculator, and there were different variables, even the air temperature, but not water. I always thought hotter water means faster evaporation. And if it’s true, how happens that it doesn’t matter when calculating evaporation rate? Is it because evaporation require a lot of heat, and no matter how much heat water have, it’s not enough to affect evaporation rate?

In: Physics

3 Answers

Anonymous 0 Comments

The assumption will be that the air and the water are the same temperature. This is a good assumption if the water is being left out for a long time and isn’t being heated directly. If the water is being heated or has not been allowed to cool to air temperature I suspect there will be other effects that would have to be taken into account (eg. convection in the water and air) that would make the calculation significantly more complicated

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