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

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

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
-> >
-> >
-> >
->
->
->
->