[Soekris] Readdressing the "cooling" question....
joelja at bogus.com
Fri Jul 17 04:55:04 UTC 2009
der Mouse wrote:
>> However most of these will be in a fairly hot environment (about 90
>> to 100 degree outside temperature at most) and will be in direct
>> sunlight for most of the day.
> (I trust those temperatures are Fahrenheit? :)
>> Naturally with that kind of abuse I'm wondering if I should put extra
>> cooling onto the soekris box -- and what's the best way to do so?
>> This is a hot, dusty site where they'll not be maintained often. Any
> Peltier effect, simply because of the "no moving parts" factor. (I
> have no specific products to suggest; I am not aware of any particular
> Peltier-effect computer cooling products, though I've seen and heard
> them discussed enough to feel sure they exist.)
The general problem with a thermocouple is you have to do something with
the waste heat, in the consumer grade ice-chest this is done simply by
putting it outside the insulated enclosure proper and hang a heatsink
off of it. The other problem is unless the enclosure you're cooling is
sealed and pressurized with some dry gas, condensation on the cool side
likely is .
Efficiency is also rather low, you could easily use 3x the energy that
you're trying to remove from the enclosure.
> In passing, does anyone know if the negative Thomson effect has been
> rendered practical for comptuer cooling?
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