Search found 5 matches

by ulther
Mon Dec 19, 2016 4:01 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Re: mod II stirling engine report
Replies: 16
Views: 7640

Re: Re: mod II stirling engine report

Let's settle on one thing here. We are not talking about toys models. I understand the parasitic drag induced by the connector; but that's a compromise I am willing to make, and why not. It is in direct proportion to heat exchange area. Now a couple of question. Why do you need 150 bar and what rpm...
by ulther
Fri Dec 16, 2016 2:50 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Re: mod II stirling engine report
Replies: 16
Views: 7640

Re: Re: mod II stirling engine report

I can't add to my previous post; but here is....... Narrow pipes mean higher surface area and faster cooling/heating, Actually, small pipes have very little contact area since it is limited by the ID. The best way is to force air through many very arrow gaps of heating plates. I had in mind that yo...
by ulther
Thu Dec 15, 2016 11:02 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Re: mod II stirling engine report
Replies: 16
Views: 7640

Re: Re: mod II stirling engine report

When talking about cooling and heating you have not to forget about flow friction. The idea in powerful engines is to have small tubes so that contact area for heating/cooling would be big, and to do that heating/cooling is done by air going through narrow pipes. Now this is where problem occur. Nar...
by ulther
Thu Dec 15, 2016 5:41 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Plans for powerful Stirling engines
Replies: 5
Views: 5097

Re: Plans for powerful Stirling engines

Well unfortunately I can't find any way to contact Mr. Ross, but last night, continuing my research, I found drawings for this awesome engine: https://www.nmri.go.jp/eng/khirata/stirling/nmri00/ecoboy.jpg http://www.nmri.go.jp/eng/khirata/stirling/minieco/index_e.html It has all dimensions for all p...
by ulther
Wed Dec 14, 2016 3:58 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Plans for powerful Stirling engines
Replies: 5
Views: 5097

Plans for powerful Stirling engines

Hi everyone,

So I was wondering is there any detailed drawings for Stirling engines on the internet. All I can find are drawings for toy/hobby models, and I'm looking for something to produce at least 10W-100W shaft power.