Re: Peltier (TE) cooling was -Re: principle of heat pipe

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "davep by way of Terry Fritz <twftesla-at-qwest-dot-net>" <davep-at-quik-dot-com>

Also:
They are, themselves, solid state devices.  They will fail if
overheated,
eg by a really hot source.  Fine for CPUs (etc) which do not get Real
Hot,
not clear how they would react to Real Hot things.  Also (speculation)
as they are sort of diodes they might rectify stray AC fields and do
Odd Things around high power RF...

best
 dwp

Tesla list wrote:
> 
> Original poster: "David Halliday by way of Terry Fritz
<twftesla-at-qwest-dot-net>" <dh-at-synthstuff-dot-com>
> 
> Peltiers are horribly inefficient - to cool one watt, you must get rid of
> six at a distance of about 1/2cm away.
> 
> Their specific heat is also pretty abysmal ( they are mostly ceramic after
> all ) so for a small source of heat, they can do pretty well but for a
> larger source, they are totally swamped.
> 
> -> -----Original Message-----
> -> From: Tesla list [mailto:tesla-at-pupman-dot-com]
> -> Sent: Wednesday, August 15, 2001 8:27 PM
> -> To: tesla-at-pupman-dot-com
> -> Subject: Re: Peltier (TE) cooling was -Re: principle of heat pipe
> ->
> ->
> -> Original poster: "Rick W by way of Terry Fritz
> -> <twftesla-at-qwest-dot-net>" <rickwilliams404-at-earthlink-dot-net>
> ->
> -> Hi all,
> ->
> -> Yes, They do a good job of cooling but in a very localized
> -> area. I run a
> -> 72watt peltier in my computer. It measures about 1 1/2"
> -> square and about
> -> 1/8" thick. My CPU runs at 28 to 34 degrees F depending on room temp.
> ->
> -> But consider them as a heat pump. One side gets cold, the
> -> other VERY hot.
> -> Water cooling is recommended for most peltiers over 72
> -> watts. Mine pulls
> -> about 6 amps from a 14 volt supply so be prepared to use a
> -> beefy power
> -> supply.
> ->
> -> And they can be stacked but water cooling is a must. Two
> -> stacked pelts can
> -> get you down to around -30 F.

> -> Rick Williams
> -> Salt Lake City.

> -> ----- Original Message -----
> -> From: Tesla list <tesla-at-pupman-dot-com>
> -> To: <tesla-at-pupman-dot-com>
> -> Sent: Wednesday, August 15, 2001 7:42 PM
> -> Subject: Peltier (TE) cooling was -Re: principle of heat pipe

> -> > Original poster: "Michael Rhodes by way of Terry Fritz
> -> <twftesla-at-qwest-dot-net>" <rhodes-at-fnrf.science.cmu.ac.th>
> -> >
> -> > Another cooling technique for your consideration.
> -> >
> -> > http://www.peltier-info-dot-com/info.html