RESONANT STIRLING ENGINE GENERATOR

Developed from a previous engine, this one is now producing some electrical energy.

Unfortunately, about 30 seconds after filming this the glass cold side exploded, the hot end fell off and melted a hole in my desk. Ooops.

Time to move on to version III!

Category:

Science & Technology

Tags:

• stirling
• engine
• laminar
• flow
• thermo
• acoustic
• thermoacoustic
• energy
• heat
• generator
• LED
• light
• magnet
• magnetic
• coil
• free
• piston

[mikerushford]

What is the rod and guide on the right end of the glass tube for?

Will the frequency of the motor change with heat or lengths?

[mowerofdoom]

Hi. The rod guide is there to reduce 'crab' loading on the piston (because the magnet at the other end is relatively heavy and tries to jam the piston). Frequency rises as the working air space is reduced but there doesn't appear to be a relationship between frequency and heat input. Heat input is linked to amplitude however. The hole in the brass is about 6 or 7 mm as I remember - it doesn't seem to be that critical though.

[anaxagoras23]

hola este video esta genial utiliza algun dispositivo electronico para causar la resosnancia o solo es con el ciclo stirling

[mowerofdoom]

esto es sólo el ciclo stirling que lo hace resonar. Gracias por el comentario. :-)

[Jeffaraujo1000]

what you used in the test tube? I mean the substance that dark!

[mowerofdoom]

Steel wool.

[Raymax642]

Brilliant! You have eliminated a lot of friction power loss from moving connecting rods. Straight linear power flow is more efficient.

[iliacht5]

Have you tried to move the left piston while running. Could be just a fantasy but you may hit a resonant air volume.

Also how about moving the steel whool on right side of the flame. I know on every video of hundreds it is just that way but I think the purpose of it is absorb the heat while piston runs forward (and cool it down so some suction occurs) and bring it back while moving backword.

[solarheatengines]

Nice little engine. Have you measured the power output on the linear generator? I'm working on a linear generator for a free-piston engine and am having trouble getting more than about 20mw out of it.

[akinorhan5]

glass>warming>viscosity....

[Zappyguy111]

Very nice!

[tv205]

Have a read of Mark Shelton's book 'The Next Great Thing' there they describe the design of a 5kw linear stirling engine.. using a linear generator. The stroke of the engine believe it or not is 15mm...

[UserIsAnFBIAgent]

Could you use a capacitor to regulate the fluctuating voltage and current?

[KenMacMillan]

Looks like a fun little project.

[redneckhippiefreak]

Some pipe blowers could make you some borocilicate glass tubes for that thing iboro glass can handel the temp and frequency changes plus the thickness can be tuned for the heat sink check around the head shops for a artist or check with a supplyer some times you can get spicific mm.diameter and thickness