Diffuser question

Discussion on Stirling or "hot air" engines (all types)
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antidartan
Posts: 15
Joined: Mon Sep 17, 2007 11:03 am
Location: ROCHESTER,ny

Diffuser question

Post by antidartan »

Would a diffuser in a tin can strirling engine be of any value? If so could a wad of steel wool in front of the power piston be used? Some were around here I have a hunk of copper wool. If the purpose of the diffuser is to help disapate heat, wouldn't the copper wool be better?


Antidartan
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Stevedigiboy
Posts: 6
Joined: Mon Nov 12, 2007 6:38 pm

Post by Stevedigiboy »

I am developing a thin layer of stainless scrubber before the exit to power piston now, I think that flow resistance is the most important factor not to slow the movement speed at higher revs. This is why oil and other things can "choke" the cooling area. This is from what I gleaned from the online NASA stirling report. Some folks sell copies but it is online in pdf if you search gfor link.
S
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