Stirlingengineforum.com

Its round 'cos thats the way its made, its generally made to a higher standard than copper. Also it is much better as a cylinder as it has much less friction, and as its harder it wears better. Bronze would be even better, you can get that in the form of bearing bushes either new or, as I do old wo...

Are you doing this test dry, or with oil? And any time goal (2 seconds or 10 seconds) is somewhat arbitrary because there are many variables, such as weight, distance, diameter, etc. Yes. The test was dry. No oil. The distance traveled was 1/2 inch, diameter is also 1/2 inch. I have to check the we...

I will get something to seal it one way or another. These copper tubes I got never come in perfect round.

I casted my first epoxy piston. It drops right through the cylinder if the bottom is opened. If the bottom is sealed, it take a bit more than 2 seconds to travel half inch. Is this piston good enough?

Is my calculation correct?

Heater: Finned tube. 2 pass
No. of tubes per circle 44
Tube ID 3.86 mm
Tube length (2 rows) 280 mm

Total heater exchanger area (gas side) 44 * 3.86 * pi * 280 * 2 = 298646.656 mm^2 = 2986.46656 cm^2

This is every large area for one cylinder.

This engine is more powerful than the Lycoming O-540 per unit displacement

http://en.wikipedia.org/wiki/Lycoming_O-540

Does anyone know how heavy the stirling engine is?

Yes. It is indeed about 605 cc. A lot bigger than 70 cc which I mis-cal. However, with 10psi pressure outputting 180w, that only put it 0.298 watts per cc. A lot less that most of the unpressurized stirlings out there.

Not pressurized from his email. He needs to get a better and small heater and cooler. If pressurized to 5 to 10 bars, I wouldn't surprised that it can power a fast go cart.

This is an interesting powerful stirling.

http://www.youtube.com/user/hdkivela2#p ... Ixl-2ZZVfs

It is not slow at all for a buggy with a stirling.

http://www.youtube.com/user/caloric16

Can someone explain these based on the above image? Thanks, Michael Don't know exactly what you mean. Both the left and right engines are of double acting alpha type. As for the regenerator, it should be designed to be able to absorb/release the amount of heat injected into the engine in one cycle ...

Looks like it can achieve very high compression if re-arranged in alpha fashion.

http://www.youtube.com/watch?v=_hnG9r0hI8c

Amazing. 15hp from a bit more than 400cc.

Ian S C wrote:Wai, the short answer is, yes. Ian S C

Sorry that I have to bring this back. But what is the different between pressurizing the crank and just installing a spring (which is almost the same as using a heavy fly-wheel)?

What do you mean when you say that "runs very easily on VERY small piped and holes (0.2mm)"? Small piped what? In order to get more heat into the system. The larger the contact surface the heat exchanger, the better. However, you have to do it with the least amount of dead space. So desig...