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Old 13th Sep 2017, 8:09 am   #25
Craig Sawyers
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Join Date: Nov 2010
Location: Oxford, UK.
Posts: 4,941
Default Re: Re-anodising heatsinks?

Quote:
Originally Posted by M0FYA Andy View Post
OK Craig, I retreat defeated!

Andy
Aplogies - my second post crossed with yours!

There is an application that needs 100% radiative cooling though - in space applications (where no-one can hear you scream!). Since it is in vacuum, the only method of getting heat out is via a radiator panel pointed at deep space (which is only about 2 Kelvin, so T1^4 - T2^4 is high). Each circuit board has a thermal layer connected to its housing. Each of those (there might be dozens or up to a hundred on a space vehicle) is coupled to the radiator panel with ammonia heatpipes.

Craig
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