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I have a rack which totals 8000 watts, now based upon this number I want to calculate the amount of electricity that goes into cooling the heat dissipated from this rack?

Is there any calculation, I can use.

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How efficient is your cooling? – Hennes Apr 13 '13 at 11:50
    
I'm thinking the rule of thumb is on the order of 3-4x, but there are a lot of variables. You can, of course, "cheat" a bit and just use a fan to exhaust the heat outdoors, if the outside air that replaces it is cool and dry enough. – Daniel R Hicks Apr 13 '13 at 12:01
    
LiquidCool Solutions has what is probably the most efficient cooling setup. Unfortunately, their site is a little too "cute" to allow one to find any hard numbers without digging. – Daniel R Hicks Apr 13 '13 at 12:09
    
Too many variables. For example. Fans to cool, versus a liquid cooling rig which uses an electric pump and fans. Now, what if you added Peltier chips beneath all of the heatsinks, and you did that in conjunction with a liquid cooling rig. All three of those options would use different amounts of electricity, and all three would cool to different degrees. – Bon Gart Apr 13 '13 at 13:27

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