On Sat, Mar 14, 2009 at 9:25 PM, glen <glenst...@yahoo.com> wrote: > > > > For conductive heat transfer as in this case you ideally want perfectly > > flat surfaces. They wouldn't need any heat transfer compound between > > them as there would be no gap. But ideal and perfect are on back order > > so you fill the thin gap with heat transfer compound which displaces the > > air. Heat transfer compounds have relatively poor thermal conductivity > > compared to the metals they are used with. But they have much better > > thermal conductivity than air which they replace in the gap. This is > > why you want just a very thin layer. > > I'm not, nor ever have been a practicing engineer but do have a BS in > engineering and my undergraduate program was very strong on both mechanical > and electrical disciplines. I really liked thermodynamics. OK, I'm sure some > MSE.s and PHD's will find some fault in this post and will humbly accept > any appropriate corrections --glen > >
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