permaculture

["John Abdon" <jabdon@hotmail.com>]

From: CtopherP@aol.com
Reply-To: "permaculture" <permaculture@franklin.oit.unc.edu>
To: "permaculture" <permaculture@franklin.oit.unc.edu>
Subject: Re:  water utilization model (fwd) AIR WELLS
Date: Thu, 26 Aug 1999 16:43:52 EDT

... it was possible to produce as much as 6,000 gallons of water
daily for every 1,000 square feet of
condensing surface ...

That works out to just over 1/2 ounce of water per minute per square foot of 
condensing surface. Remembering that heat is released as water vapor 
condenses into droplets, a glance at a mechanical engineering 'steam chart' 
reveals why this idea for recovering water from the atmosphere has not been 
demonstrated to date: the released thermal energy quickly heats up the 
condenser and the temperature difference between the air and the condenser 
approaches zero, at which point no condensation will occur.


 `\\\||/    johnAbdon  jabdon@hotmail.com
   (@@)     Kirkland, Washington, USA
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