Originally Posted by wayne23
I don't know about all that stuff, but what I do know I can keep ice longer if I drain the water every day an limit opening the cooler as little as possible. An when I do in the am or at least in the shade an in an out fast.
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That is true, but as proven by the results in the two tests above, draining does not keep the air as cold and the "coldness" (that's a scientific term- i believe) is not conducted as effectively to the items you want to keep cold.....that lack
of conduction (really it's heat transference from items & air to the ice) is why the ice is still cold but the air and beer, food etc are not as cold as they would be if the melt water were there to act as a vector and insulator.
By draining you are effectively lowering the cooling capacity and insulating potential of the items in the cooler. Again, their tests proved it and support what I've always observed IRL.