Twin cylinder thermo-acoustic Stirling Engine #2

A precision-built twin cylinder twin piston thermo-acoustic Stirling engine. These engines are sometimes called Lag engines and sometimes called Lamina flow engines.

Category:

Entertainment

Tags:

• Stirling
• heat
• thermo
• acoustic
• thermo-acoustic
• lamina
• laminar
• lag
• engine
• twin-cylinder
• twin
• cylinder
• piston
• flywheel

[105bogus]

what material is used to make a piston and what is the piston-cylinder clerance? Are brass sleeves slided on test-tubes for 'good look' purpouse only? Are test-tubes precisely round to seal the engine?

[1967geezer]

@105bogus The piston is graphite. The brass sleeves hold two separate lengths of tube together. The two long tubes are test tubes, the two short tubes are precise borosilicate tubes. Test tubes are not normally perfectly round.

[euro3434]

where I buy this engine?

[1967geezer]

Not for sale...

[efkperez]

what material is your test tube?

[1967geezer]

borosilicate test tube

[anoceanofhearts]

Man that is possibly the most beautiful machine i have ever seen. wow! i just gotta make one of them. how can i get a plan? So very very cool.

[WarzSchoolchild]

A lovely model, but I am curious as to why you call it a Thermo-Acoustic Stirling Engine?.... Penn State University have loads of information on Thermo-Acoustics, and the Stirling Engines are 'Tuned'... The wavelength of the tube is critical. They work on the 'bucket-brigade' principle. molecules of gas behave like an acousic laser inside an acoustic honeycomb. The noise they make can be deafening! This looks to me like a regular stirling engine. Pardon for the quible.

[grommdk]

but will it blend?

[tarmacdemon]

@anoceanofhearts

I Totally agree a very nice looking engine .

[denni4job]

cud u please tell me the working principle behind this engine. also is it more efficient than the normal beta type stirling engine.. pls tell.

[steamwally]

Superb bit of machinework there, you have created a fine little engine.

My "thing" is old stationary engines, internal combustion. I started with small steam engines when I was 8 and moved up to the old farm engines. I'm becoming increasingly interested in these stirling engines.

I tried to build a small one a few weeks back and it didn't work too well. However, I should recieve a kit in the post any time now so might have a go at building another on the lathe.

Really enjoyed the vid!

[munhoeo]

Please excuse my ignorance. I undertand it's a heat pump / heat engine. But what does it have to do with acoustic? Does the sound wave/natural frequency of the chamber has something to do with the displacement? Thanks

[piespokladowy]

*****

[mimic58]

@WarzSchoolchild Frade not , These engines are indeed thermo acoustic , The length and diameter of the tube used is Critical and affects the frequency that the engine cycles at you will find with this engine the top speed will not change regardless of the stroke on the piston or the throw on the cam.

[mimic58]

how long did it take you to biuld this engine geezer?? looks like a really nice job