Aluminium radiator design

[Lc_shi]

How to design Aluminium radiator for electrical component heat rejection? I'm not sure if it's a related topic here:confused: anybody know it?


regards
LC

[Brian_UK]

How you looking for a fixed metal type device to fix to the item or are you planning to do cooling via liquid heat transfer?

If it is the fixed type then have a look here for some information and design calculations.

http://www.conradheatsinks.com/technical-details.html#geometry

[NoNickName]

LC, use the radiative heat formula from Boltzmann

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/imgheat/stef3.gif
Where

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/imgheat/hrad2.gif
Emissivity of aluminum is around 0.82-0.87

[Lc_shi]

It's really helpful! Thanks.
I'm not sure if the AL radiator need to use a fan to dissipate the heat from the radiator.

regards
LC