Why does a closed pot heat up faster than an open pot?

Because a closed saucepan has better thermal insulation properties than an open one. Therefore, when heat is applied to a closed pan, less of it will be wasted on heating the surrounding space, and more will be transferred to the dish in the pan. Therefore, the same amount of heat input per unit of time will change the temperature of the contents of a closed pan more than an open one.



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