Stirlingengineforum.com

"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. ...

Amazing your arrogance thinking your barely comprehensible ramblings and opinions constitute "TRUTH". Like some centuries old obsolete equation based on Caloric theory, that equates all the complexities of efficiency in all heat engines to a water wheel is "TRUTH". Let's try this...

This isn't some proposal for some new "perpetual motion" engine or some such thing. It's just how Stirling engines actually work. But a "real" Stirling engine is supposed to have a regenerator, which helps keep the hot and cold sides separated. So in this experiment I added a reg...

Here is a description of the first two stages of a Carnot cycle. The Carnot Cycle The Carnot cycle consists of the following four processes: A reversible isothermal gas expansion process. In this process, the ideal gas in the system absorbs qin amount heat from a heat source at a high temperature Th...

In an arrangement as shown previously; Compress_20240427_222542_2565.jpg First the displacer moves down the cold air is pushed up to be heated. Compress_20240429_201803_3828.jpg As the gas is heated and expands, the ice is covered and protected from heat, insulated from the heat by the displacer. As...

That is not a low temperature differential engine. Running an engine with an alcohol flame, and or, a propane torch and room temperature, is not a low temperature differential. That's a fallacy or gross misconception. It is the chart you provided. It clearly shows temperature rise from about 10° be...