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Evaporarive cooling. How to calculate the cooling of the air?

  1. Jul 26, 2011 #1
    So I'm trying to figure out how effective evaporative coolers are...

    Lets say, I have a box with 3 cubic meters of air with a humidity of a 10%. I blow it out with a fan and spary with water as it leaves the fan.
    The water is room temp (which is lets say 27 C).

    What temperature difference should I expect?
    Is there a way to control the amount of humidity by spraying more or less water? (How can I reach 100% humidity versus 40%)?

    Thank you very much!

    P.S I read wikipedia about Wet bulb, and Dew point... That didn't really helped me out...
  2. jcsd
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