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Gold/Mining/Energy : Big Dog's Boom Boom Room

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To: Wyätt Gwyön who wrote (83126)	4/16/2007 7:10:57 PM
From: Elroy Jetson	Read Replies (2) of 206334

You're right. Misting is just like a swamp-cooler - the higher the humidity, the less efficient it is. When the water mist evaporates, it takes 539 calories per gram of water out of the air via the energy required for the phase-change - or about 8,100 BTU per gallon of water. The power absorbed by one gallon of water is equal to 2.4 kWh, or about $0.23 at the average residential cost for electricity. This is the amount of electricity needed to run a 27,000 BTU air conditioner (with an Energy Efficiency Rating of 9) for one hour. Another analogy would be that 15 gallons of water evaporation eliminates the heat produced by burning one gallon of gasoline. If the air is so humid that water evaporates very slowly, then little cooling occurs. .

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