Properties of Heat dissipation under vacuum

[scarywoody]

Curious if anyone can point me to some info on how heat dissipates under vacuum. Think in terms of a chamber full of warm silicon wafers and how that heat would dissipate. Would it be signifigantly slower than at atmosphere? Thanks

 

[IRstuff]

There's still radiation of energy.

Planck's blackbody function describes the problem.

Time is dependent on how the wafers are supported. If they are on a planetary, there is some amount of conduction, and without air, there is no convection.

TTFN

 

[scarywoody]

Ah interesting thanks for the reply...to correct my first post: "Think in terms of a chamber full of warm silicon wafers at .1 mT and how that heat would dissipate."

 

[IRstuff]

Assuming little physical contact, then it's all blackbody radiation, which may be quite poor in some vacuum chambers, since the inner walls might be highly reflective.

TTFN