What is the difference between thermal lag and lamina flow engines

Discussion on Stirling or "hot air" engines (all types)
Trevor
Posts: 169
Joined: Sun Nov 06, 2016 4:07 am

Re: What is the difference between thermal lag and lamina flow engines

Postby Trevor » Mon Dec 19, 2016 11:55 pm

HI Crazyguy
I have built a few of these myself (thermal acoustic engines) and as yet have not got one to operate well. The ones with 3 diaphragms seem to work better than a single one, however using a piece of hose that tunes the engine will also work and it is this design that I seem to work better. Bloody frustrating sometimes. I also have used copper and is OK if you use a water cooler otherwise forget it as copper conducts the heat that fast it eventually stop beside burning the hell out of your fingers.
Trevor

Trevor
Posts: 169
Joined: Sun Nov 06, 2016 4:07 am

Re: What is the difference between thermal lag and lamina flow engines

Postby Trevor » Tue Dec 20, 2016 2:30 am

This is a picture of the Acoustic engine that works but not good. I will get around to making it work properly one day, but with all the failures it is hard to get that enthusiasm I once had - Must be old age :big smile: .......Trevor
Attachments
Acoustic Sterling Engine.jpg
Acoustic Sterling Engine.jpg (157.58 KiB) Viewed 736 times

oarabree77
Posts: 3
Joined: Tue Dec 20, 2016 11:11 am

Re: What is the difference between thermal lag and lamina flow engines

Postby oarabree77 » Tue Dec 20, 2016 11:14 am


tibsim
Posts: 34
Joined: Thu Dec 31, 2009 8:54 am

Re: What is the difference between thermal lag and lamina flow engines

Postby tibsim » Wed Dec 21, 2016 3:15 am

Hi! Nobody makes lamina flow engine with a membrane so far!
Lamina flow engine works too slow frequencies for membrane and it is need more compression and versa so this engine not like when is wider the piston as tube. You can build lamina flow with water piston, or solid piston, but not membrane (or not simple)!
Lamina flow engine building is not easy, because reducer size is important also.

Simplier thermoacoustic engine this:
https://www.youtube.com/watch?v=WYSLy_iAtvY
This is need very loose stack, and membrane do not puff up from heat (a very little leak).

This is the simplest, at this you can not to make a mistake:
http://stirlingtechnology.blogspot.hu/p/c-ta.html

tibsim
Posts: 34
Joined: Thu Dec 31, 2009 8:54 am

Re: What is the difference between thermal lag and lamina flow engines

Postby tibsim » Wed Dec 21, 2016 3:20 am

oarabree77 wrote:Cool
บอลโลก

Cool!
Cone membrane is very hard to build. 40 mm wide membrane is simplier and it can work surely!
Here is example:
https://www.youtube.com/watch?v=I-JjUyVlINA
For generator also

Trevor
Posts: 169
Joined: Sun Nov 06, 2016 4:07 am

Re: What is the difference between thermal lag and lamina flow engines

Postby Trevor » Wed Dec 21, 2016 3:45 am

Thanks Tibsim - Hope to get mine going again soon - They looks promising with their power output.
Trevor


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