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Cooling 172watt TEC with Chrome Orb
- Thread starter Neptune
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William
Guest
what do you mean yeah right, that orb is awesome. it could handle a 300W pelt, I mean it could easily handle a 1.5ghz Athlon right?
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lightning
Guest
it was sort of "nut" to think that air hsf can handle pelt even 85W pelt!! so forget about using hsf alone to cool to pelt!!! water cool is the way to go!! 
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William
Guest
what are you talking about, I am sure the chrome orb can take it, it just has too. Its too good of a hsf design not be able to!
You don't have a clue what your talking about William. As air cooled heatsinks go the Orb's are not even very good and even the very best air cooler can't handle the 300W or more heat load that a 172W pelt gives off.
For comparison a Tbird @1500MHz (the max the orb is rated for) gives off 77W, so at 300W you would be asking the Orb to cope with 4 times the heat load it was designed for.
But hey don't believe me, just go buy yourself a 172W pelt, stick your Orb on it and fry your cpu.
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I'm quit sure that William was being sarcastic...don't be so quick to judge, you'll tend to overlook the obvious.
IF I were to air-cool a Peltier I would choose the 172watt variety.
For example, it is more thermally efficient than a 85watt Peltier at the same "cooling power",that is, it produces less heat.From my measurements a 172watt Peltier at 12volt produces 4amp[1/3ish of Imax{11.3a}] and hence a "cooling power" of 60watt [1/3ish of 172] and a "heat output" of 48watt[12x4].Whereas a 85watt peltier at 12v produces 7amp[70% of measuered 10a at 15v] a "cooling power" of 60watt[70%ish of 85] and a "heat output" of 84watt[12x8].
This,of course, is dependant on :- "heat output"=Volt x Amp ?
"cooling power" being proportional to Amps?
Does any one know whether my thinking is correct or have I got a basic misunderstanding of Peltiers?
For example, it is more thermally efficient than a 85watt Peltier at the same "cooling power",that is, it produces less heat.From my measurements a 172watt Peltier at 12volt produces 4amp[1/3ish of Imax{11.3a}] and hence a "cooling power" of 60watt [1/3ish of 172] and a "heat output" of 48watt[12x4].Whereas a 85watt peltier at 12v produces 7amp[70% of measuered 10a at 15v] a "cooling power" of 60watt[70%ish of 85] and a "heat output" of 84watt[12x8].
This,of course, is dependant on :- "heat output"=Volt x Amp ?
"cooling power" being proportional to Amps?
Does any one know whether my thinking is correct or have I got a basic misunderstanding of Peltiers?
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William
Guest
yes I was being sarcastic. There really isn't any air cooled hsf except for hoot's cohesive setup that could begin to cool a 172 watt orb.
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