# Time for Hot Water to Cool -- Calculation...

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## Main Question or Discussion Point

The title says it all. I would like to know how to calculate the time for boiling water to cool off. Assuming the temperature of the room is not changing and there is a constant degree of air flow over the water. Really I would just like to know how to go about calculating this.

Aiop

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davenn
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The title says it all. I would like to know how to calculate the time for boiling water to cool off. Assuming the temperature of the room is not changing and there is a constant degree of air flow over the water. Really I would just like to know how to go about calculating this.

Aiop
what have you done so far to work this out ?

Really, the answer has more to do with the container that the water is in and the starting conditions (volume and temperature). It's an engineering question.

The surface areas presented by the sides of the container, the surface area at the top and the thermal conductivity of the materials will have a large effect and not one that can be easily calculated given the variety of materials and designs.

For a specific container, if temperature and airflow is constant and you want to be able to predict the rate of cooling in the future you might be better off with plotting some observations on a chart and then using that as lookup, maybe against a given volume or starting temperature.

sophiecentaur