Re: EV digest 1487 cooling and de-humidifying with ice

[Ron Schroeder <rjs@bnl.gov>]

Hi,

Contrary to popular belief, blowing air over ice or chilled water eill NOT
increase its humidity, if the water or ice is below the dewpoint of the
air, moisture will condense out of the air onto the water or ice LOWERING
the air's humidity.

Ron


>From: "Peter VanDerWal" <peterv@peoplepc.com>
>To: <ev@listproc.sjsu.edu>
>Subject: Re: OT ICE to save A/C cost was Ice chest air conditioner
>Date: Tue, 7 Aug 2001 13:09:29 -0700
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<snip>
>Anyway, it mentioned a cheap way to cool one or two people.  Instead of
>cooling the whole house take a block of ice and put it in a tub of water and
>then blow a fan over it.  The combination of ice and evaporation will cool a
>small area; like when you are watching TV, using the computer, reading a
>book, etc.
<snip>

>From: "Chris Tromley" <chris_t@microtrac.com>
>To: <ev@listproc.sjsu.edu>
>Subject: RE: what would you build?
>From: "Crabb, David" <David.Crabb@Ceridian.com>
>To: "'ev@listproc.sjsu.edu'" <ev@listproc.sjsu.edu>
>Subject: RE: OT ICE to save A/C cost was Ice chest air conditioner
>Date: Tue, 7 Aug 2001 17:17:04 -0400 
>MIME-Version: 1.0
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>no no no... not blowing the air over the Ice itself... the icewater could be
>pumped through a radiator-type housing.. and the cooled air would blow
>through the room...
>
>actually water could condense on the radiator..  and it would dry the air in
>the house.
>
<snip>
>> Eww, bad idea.  Just think of all the humidity that would put 
>> back into 
>> the air.  Part of the cooling effect of an AC unit is the 
>> reduction of 
>> moisture.
>> 
>> -- 
>> Joseph S Gardner




Ron Schroeder
WD8CDH
E. E. S.
wd8cdh@bnl.gov
rjs@bnl.gov
ron@112motors.com
631 344-4561 Day
631 286-5677 Nite