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I think it would be helpful to put pressure and volume values on these ideal PV graphs. Senft was going in the right direction including "buffer pressure" and talking about "constant mechanical effectiveness" which Matt considers a "free lunch". That's not all that's m...

Fool, Your basing your conclusions on largely false, incomplete, obsolete theory. If the "Ideal gas law" for example was literally true, there would be no such thing as refrigeration and air conditioning. No such thing as liquefaction of gases or evaporation. If kinetic theory were literal...

Compress_20240504_125427_7507.jpg Here you can see actual, physical real world data. The results of actual experiment. Solid empirical data. Not charts, not graphs not hypothetical, theoretical "modeling", not questionable mathematical number juggling. If you want to dismiss it offhand, t...

Adiabatic.svg.png Top left of adiabatic is point 2. Isentropic expansion follows down thick green line, and does positive work equal to the shaded green area under the curve. Compression returns along the same line back to point 2. Requires work input equal to the shaded green area under the thick ...

No. It's just modeling a wall, and given surface temperatures. The constant temperatures outside are standard heat source and sink models. That is similar to all the high and low constant temperature.sources used to model engines. As Feynman said, "TSOWGI". It's supposed to show how heat ...

"You just skip 1 and go straight to 2?" You are proposing a series of adiabatic processes that start at point 2. The only adiabatic path available is the one that starts at point two, where you switch to adiabatic processes, follows an adiabatic expansion line forward until all motion is ...

https://www.engineeringtoolbox.com/conductive-heat-transfer-d_428.html conductive_heat_transfer.png Is your graphic supposed to prove you can have heat transfer between a metal plate and the air without a measurable temperature difference? You've certainly selected an appropriate name for yourself.

n=1-Tc/The 1-300/400 = 0.25 1-1000/1200 = 0.166 Wider ∆T lower efficiency! How come? Because, as I've been saying the Carnot efficiency formula is bogus, illogical, irrational nonsense. Keep going 1-3000/3400 = 11.765% etc. Temperature is temperature, an average, not any measure of total quantity o...

Actually, A greater ∆T means higher efficiency? That would mean, if with two engines running on ice, we supply additional heat to the top of one engine and not the other, the engine with the additional heat should run more efficiently, thus converting more heat into work. Expected result: The engine...

I don't have the time to read everything here and elsewhere. I'm still a working stiff and my day job has been brutal the past year (company move). So, where did you post this here? Well, here: https://stirlingengineforum.com/viewtopic.php?p=12838#p12838 And also way way back in 2012 at the very st...

Yeah, that's the graphic. Maybe I saw a forum link to it somewhere recently. Anyway, what was the story behind the graphic? (I notice tesla-test capture) edit: in graphic, is one engine running while other is not? Are you kidding me? Are you the same "Matt Brown" who's been in here discus...

Should the ice melt faster under just one engine? Or will it melt faster sandwiched between two engines. Anyone care to guess? Hmmm, how about 2 identical setups (on ice) with one engine running while other engine is not. Already did that years ago. Many times. I tried to find your recent graphic w...

Air inside heating "up" the cold plate, air outside cooling it off, equal equal, what would the outside temperature be? I would think that half way through the wall the wall temperature would be halfway between the two. ... The problem with your theory here is heat does not transfer betwe...

Anyway looks like these engines have no problem running on ice. Compress_20240505_221454_4707.jpg https://youtu.be/ZP2Rxvm5bxc Should the ice melt faster under just one engine? Or will it melt faster sandwiched between two engines. Carnot would predict, I think, that because between two engines heat...

Is this supposed to be isochoric heat addition at TDC? Yes. V1 V2, point 1 to point 2, isochoric heat addition. V1=V2. You got it. Isochoric. Is there a point 1 ? Yes. Qcz, V1, T1, P1. Engine cycle starting point. Point 2. Qhz Beginning of isentropic expansion stroke. End of isentropic compression ...