Stirlingengineforum.com

Sadi, you might have something to contribute to the forum so I'll set aside your childish insults: "Dear boys" and cowardly straw-man blustering: "You seem to want to tell me: that you INTENTIONALLY build bad "heat engines", and that you INTENTIONALLY make an even worse copy...

Hi normandajc. I too can't see the operating principle from the diagrams. I'm guessing you're principle is similar to the Ericsson engine https://en.wikipedia.org/wiki/Ericsson_cycle but different enough to be patentable? That engine worked and addressed the dead space issue of large exchangers/rege...

Bravo Yorky. Another perspective is that even though I have done some physical modeling, I am a "lover of technical thermodynamics" and probably enjoy theoretical tinkering as much as you enjoy your physical models. But it would seem silly in my own search for "useful" to limit m...

It's sorta like saying a water wheel would produce more power by lowering water from ten feet to zero feet elevation, than it would produce by lowering water from twenty feet to ten feet elevation. I don't live at sea-level, but fortunately that has nothing to do with efficiency. Yes the closer a gi...

There was this from Ian some years back:
viewtopic.php?f=1&t=1014&p=3861#p3861
Bumpkin

The only thing I know is acetone. It's in most fingernail polish removers. Good luck on your project.

Bumpkin

For some reason the geyser got me wondering if you could compress air, draw the heat off for steam elsewhere, then recover power expanding the air, which would then be colder and would reheat from the ambient or simply be exhausted. Expanding couldn't get back all of the power used in compressing, s...

"Could that be avoided somehow with multiple cylinders?" When I was a kid I found it incredible that I was the only one smart enough to see that if you would inject water instead of diesel you'd have a lot cheaper fuel. My dad finally got my head pounded straight, but when I was twelve we ...

Tom Booth said: "I guess there are reasons water is not more often used as a refrigerant. It generally evaporates well above the target temperature for a refrigerator or freezer, but for harnessing the energy of ambient heat, it quit possibly could work just fine." There was This thread: h...

I don't know if a nozzle could be made to keep a laminar air charge from mixing in air, but a vortex cannon can. https://en.wikipedia.org/wiki/Air_vortex_cannon I think the nozzle used in some Thermal Lag engines operates like a vortex cannon, isolating the intake air to the hot end from heating unt...

Hi danalinscott. A thought about layer thickness: I believe the reason that engines that reciprocate a regenerator intead of a displacer perform well is that the blanket is doing more than just regenerating. In my opinion the effects of radiant heat transfer are not given enough credit in these engi...

Hi notfairchild. I too remember that the Alpha type engine was hard to understand. I wish I had known to do this: Look at a Gamma type animation until understanding. Then apply that understanding to a Beta type animation. Once you have that, imagine the displacer being stationary and imagine the hot...

"Utilizing the draft air in this way would increase the temperature difference by 60 to 90 degrees much of the winter, but also the incoming draft would be somewhat preheated with the waste heat from the Stirling engine, which would be an additional advantage over my current arangement., As the...

Hi Tom. I still look in sometimes. Had to give up my paid website and I'm sorta slow getting moved to the free one. Won't have space for Bumpkin Tech anyway so I sent you a pm with the Stirling relevant stuff.
Bumpkin

I could have dropped a few zeros, but just for kicks I put a pencil to it. A VERY efficient Stirling could at max get 200 kw power from a 500 kw source. For a starting point, and only as an example; assuming a very efficient engine, with a hot end at 600 C and a cool end at 100 C - running 1000 rpm ...