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Article #118Re: Cooling attic (and home) by spraying water on roof (shingles) - good/bad?
From: Robert L. Bass
Date: Sun, 26 Jun 2005 19:07
Date: Sun, 26 Jun 2005 19:07
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3303 bytes
>> Mine also shows the temp with 1 decimal place >> resolution. When the remote sensor is brought >> close to the unit and left to equilibrate for 10 >> minutes both readings agree with each other to >> within about 0.5 degree. > > The readout doesn't mean anything. I'd bet you're > getting 2 C max accuracy. That may be true, but it's probably safe to assume that the temperature decrement which the gentleman read was not off by 2�C. Even assuming the "before" and "after" temperature readings were off by a degree or two, the delta reading was probably accurate to within a small fraction of a degree. That said, I'm not sure this is an optimal use of natural resources. Where I live (southern Florida and northern Brazil at various times during the year) water is more expensive than electricity. A good fan can bring the attic temperature to within 5�C of the outside air temperature. Operational costs are minimal. In Sarasota private well water cannot be used for this purpose for two reasons. First it's usually full of sulfur and iron deposits which would stain the roof horribly and stink like rotten eggs. Second, it's illegal. We have strict environmental laws here to keep anyone other than strip miners from wasting natural resources and destroying the ecology. -- Regards, Robert L Bass =============================> Bass Home Electronics 2291 Pine View Circle Sarasota � Florida � 34231 877-722-8900 Sales & Tech Support http://www.bassburglaralarms.com =============================>
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