Search found 4 matches

by ciara8
Wed May 17, 2017 12:02 pm
Forum: Stirling and "Hot Air" Engine Forum
Topic: Pressurizing a free piston stirling with a spring or rubber bands?
Replies: 8
Views: 7889

Re: Pressurizing a free piston stirling with a spring or rubber bands?

Nice, interesting. Since it's a high-temperature stirling, and I'm guessing you are putting in at least 100w of heat into it, shouldn't the linear alternator produce at least 10 watts of power? Is the low efficiency due to a sub-optimal linear generator? I'm guessing the generator is the two transfo...
by ciara8
Mon May 15, 2017 11:47 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Pressurizing a free piston stirling with a spring or rubber bands?
Replies: 8
Views: 7889

Re: Pressurizing a free piston stirling with a spring or rubber bands?

Interesting, so you get a powerful compression just before the gas is about to be heated, but then it expands freely because magnet force will be almost nothing after the distance between the two magnets increases a bit. Maybe that's the secret to a really efficient stirling, or at least a high-torq...
by ciara8
Sun May 14, 2017 6:51 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Pressurizing a free piston stirling with a spring or rubber bands?
Replies: 8
Views: 7889

Re: Pressurizing a free piston stirling with a spring or rubber bands?

Yes, this is EXACTLY what I am thinking, guess that's a much better way to put it.. so is there any reason why this wouldn't work or it would create more inefficiencies than the increase in efficiency it produces? I guess the equivalent for a flywheel engine would be adding a spring on the flywheel ...
by ciara8
Sun May 14, 2017 6:20 am
Forum: Stirling and "Hot Air" Engine Forum
Topic: Pressurizing a free piston stirling with a spring or rubber bands?
Replies: 8
Views: 7889

Pressurizing a free piston stirling with a spring or rubber bands?

Hi, I'm looking at this type of simple stirling engine: https://www.youtube.com/watch?v=1-XcDuyV2l4 https://www.youtube.com/watch?v=GrLH4AbmDuM https://www.youtube.com/watch?v=Lyfo-N0HRWs http://physicstoys.narod.ru/page/Freepiston/Freepiston3.html Where inertia/bouncing is what moves the displacer,...