OK, so I keep a large kettle on my stove filled with water at a low temp to help humidify the house. (Yeah it is very low tech.)

My question is as the water boils away, just steams actually so I suppose it is technically just evaporating at an elevated temp., will it evaporate faster as the level in the pan gets lower or at a constant rate?

If I remember my jr.high science correctly I think once the water all gets up to temp. heat added equals water evaporated....one unit of heat will evaporate one unit of water, regardless of the volumn of the body of water.

So for me it would go down at (lets say 1/4" per hour) a constant rate whether the pan is half empty or half full (just kidding) or basically full.

Tom W

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.