Peltier Module for Cooling - diyAudio
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Old 30th June 2005, 09:01 PM   #1
gengis is offline gengis  United States
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Default Peltier Module for Cooling

Had anyone tried the peltier cooling module, such as high power amplifier?

http://www.tetech.com/modules/high-performance.shtml
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Old 30th June 2005, 10:06 PM   #2
Netlist is offline Netlist  Belgium
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Thinking of cooling a Class A amp one would need something like double the power. One half for the amp, the other say 6A to cool it. I could be wrong as this is what I was thinking from looking at one of the datasheets.
They would perhaps be nice to cool a low power class A/B amp.

/Hugo
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Old 1st July 2005, 01:43 AM   #3
gengis is offline gengis  United States
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Hugo,

I meant multiple units, since the each unit is so small.
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Old 1st July 2005, 01:48 AM   #4
imix500 is offline imix500  United States
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Hi gengis, I've used peltiers for cooling in several applications. They are heat pumps as you may know and work very well in situations where heat needs to be pulled away fast so that it can be dissapated more slowly via a large heatsink or by transferring the heat to a water cooling system away from the device being cooled. You can also use them to maintain a constant temperature via simple thermal feedback techniques. Large units are readily available on ebay and are dirt cheap compared to new.
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Old 1st July 2005, 01:53 AM   #5
gengis is offline gengis  United States
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imix500,

Thanks. I am thinking of sandwiched the peltier between the transistors and the heatsink for much cooler transistors.

Water cooling is a very good idea. But I don't like to play electrical equipment close to water or vice versa. On that front, I like to live not dangeously.
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Old 1st July 2005, 02:00 AM   #6
Mr Evil is offline Mr Evil  United Kingdom
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Peltiers are great if you need to cool to below ambient temperature, but otherwise the terrible efficiency is not worth it.

Unless you have low humidity, temperature control or very good insulation then you will get condensation, so maybe you should rethink the water-cooling
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Old 1st July 2005, 02:46 AM   #7
imix500 is offline imix500  United States
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Indeed, condensation is a BIG concern without the things Mr Evil brought up. Water cooling really isn't that scary if done correctly. I work on large frame lasers consuming 15kw of energy and running ~400v dc at 35A, and are water cooled. I've also water cooled several high energy projects of my own and have had great success. Amazing how much heat water can pull away.
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