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Old 07-27-2007, 10:08 PM   #1
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Default water volumes and temperature question

OK Thermodynamics studs... is there a simple formula to determine what temperature the resulting volume of liquid will have if two or more different-sized volumes of liquid at differing temperatures are mixed?

i.e. one gallon of water at 40 F plus one gallon at 80 F plus two gallons at 200 F would result in four gallons at what temperature?


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Old 07-28-2007, 02:37 AM   #2
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[(1 x 40) + (1 x 80) + (2 x 200)]/4 = 130F, assuming you don't lose any heat when mixing.


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Old 07-28-2007, 02:41 AM   #3
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Bike N Brew is right - as long as none of it has grain in it.
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Old 07-28-2007, 05:02 PM   #4
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well crap... it's that easy?
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Old 07-29-2007, 02:22 AM   #5
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As long as the cold water isn't frozen, yes. Now if it's ice, it equalizes lower than you'd expect because it takes energy to melt ice.


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