Stirlingengineforum.com

You really do sound like an Al that has run amuck. When you quote me and bold and underline everything except the word 'negligible', you under emphasize that word. That is a form of twisting others words. No it isn't. It's giving emphasis to point out how the entire jist of the bolded text clearly ...

Maybe Matt could tell us again why "Uncle sugar" or the SEC or US military goes after free energy garage inventors to destroy them. He seems to know all about it. If you guys are so sure of your "Carnot" fairytale nonsense, why waste all your time on some obscure model engine for...

The Vuilleumier cycle requires hot and ambient to run the machine. It requires a insolated space to cool. As you point out, three temperatures. And the heat absorbed from that cold space is rejected to ambient. It won't work trying to cool the ambient temperature and reject to the hot space. It nee...

negligible too slight or small in amount to be of importance. https://dictionary.cambridge.org/us/dictionary/english/negligible Twisting my words again. Negligible was not "thrown in". It's well defined. Well glad you looked it up, because it really didn't fit in with your claim that the ...

I came across two opposing theories. One says basically heat is a fluid and runs through a heat engine like water. The other says heat is energy and basically "disappears" inside the engine, as it is converted to work. If the latter is true, then it is really not necessary to design an en...

"The "internal energy of the piston"???" In physics and engineering it is calculated by 1/2MV^2. It is know as kinetic energy. ... "You don't get anything more than 1 atmosphere from the atmosphere. " The atmosphere puts about 15 psi onto the area of the piston. If the...

... Actually your refrigerator works on a different process than Carnot or Vuilleumier cryocooler. The Vuilleumier cryocooler requires hot cold and ambient. The heat absorbed by the engine at high temperatures and at low temperatures is rejected at ambient temperatures. https://link.springer.com/ch...

I could really care less about Carnot, Kelvin, Einstein, or Tesla. I just have some plans to build Stirling engines, so I have to know accurately how they work I came across two opposing theories. One says basically heat is a fluid and runs through a heat engine like water. The other says heat is en...

Have you measured this heat you think gets transfered to the "cold hole" in a running Stirling engine? No. Have you? Of course. only like 20 times. Or at least I've tried. But you can't measure what isn't there. Of course fool and company just say I'm not getting an increase in temperatur...

"The "internal energy of the piston"???" In physics and engineering it is calculated by 1/2MV^2. It is know as kinetic energy. ... "You don't get anything more than 1 atmosphere from the atmosphere. " The atmosphere puts about 15 psi onto the area of the piston. If the...

Why does the Vuilleumier cryocooler need three temperatures? ... It doesn't That's like saying why does your refrigerator need three temperatures? Hot at the compressor, cold in the ice box and ambient surroundings. Compression generates heat, expansion results in cold. Then you have the ambient su...

... If instead one third stays at 300k, could that energy be used up to bring the other two thirds to 200k and 400k, respectively? And if heat can be destroyed, will the room eventually reach 0k as all the rocks are lifted? I don't know what you mean there (,highlighted in bold) "used" ho...

For heat to be removed from the cold end, by the working fluid, it must have an _average_ temperature throughout the cycle, that is below that of the cold end. It's easy to postulate that the working fluid temp might drop below that temp briefly, but I'm really struggling to see how it could be bel...

Here is your basic Stirling engine refrigeration cycle:
Fairly simple and straightforward.

While expanded and cold near BDC the working fluid is moved down.

While compressed and hot near TDC the working fluid is moved up.

But you can't preserve a cold hole by pumping ambient temperature air into it, which is what the proposal amounts to. How so? No air is pumped into the ice or whatever "cold hole". .... As the hot gas expands and drives the piston, with 100% efficiency. All the heat is converted to work. ...