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Xtreme Cooling LN2, Dry Ice, Peltiers, etc... All the usual suspects |
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05-03-2003, 06:36 PM | #1 |
Cooling Neophyte
Join Date: Apr 2003
Location: hollywood, fl
Posts: 40
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172w 24v(16a) pelt ran at draw? 12v how many amps would it
would it still need all 16amps even tho its being run at half its req. voltage??
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05-03-2003, 08:24 PM | #2 |
Cooling Savant
Join Date: Apr 2003
Location: Madison, WI
Posts: 225
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V=IR
24V=16A*R R=1.5 ohms 12v=I*1.5 I=8amps P=IV P=8*12 P=96 watts Anything else? |
05-03-2003, 09:25 PM | #3 | |
Pro/Guru - Uber Mod
Join Date: Sep 2002
Location: Indiana
Posts: 834
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Quote:
When a pelt is powered to maintain a temperature differential, there is a Seebeck voltage associated with the temperature differential that reduces the current draw of the pelt. Pelts also have a substantial Temperature Coefficient of Resistance making it complicated to calculate the performance of a pelt. Here is a Kryotherm simulation of a 172 Watt pelt powered at 12V, and cooling a 35 Watt GPU: Edit: BTW, for this simulation: P=67W |
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05-03-2003, 09:28 PM | #4 |
Cooling Savant
Join Date: Apr 2003
Location: Madison, WI
Posts: 225
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damn. I hate it when people who know more than I do prove me wrong...
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06-29-2003, 05:12 PM | #5 |
Cooling Neophyte
Join Date: Jun 2003
Location: Auckland, New Zealand
Posts: 40
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on my pc at 14.5 volts it draws 4.3 amps so 62 w
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