Stirlingengineforum.com

"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 ...

The engine starts out at 300, atmospheric. 100 heat is added. The expansion stroke starts at point 2, 400. If all the processes are to be adiabatic after that, the complete cycle will end back at point 2, Qhz, V2, T2, and P2, which is 400. The only way back to 300 at that point, is to reject 300 un...

Fool wrote: ↑Sun May 05, 2024 5:05 pm ...If all the processes are to be adiabatic after that, ...

After what?

Sounds like the piston hasn't gone anywhere yet.

The engine starts out at 300, atmospheric. 100 heat is added. The expansion stroke starts at point 2, 400 ... This is already inherently contradictory. Needless to say, I haven't read any further. Is there a point 1 ? How do you get from point 1 to point 2 without expansion? What do you mean by &qu...

... Once the volume of gas can transfer more energy than the body of the engine itself, then IMO, conclusions can be drawn. Bingo, you nailed it again. What does the transfer rate through the engine body or working fluid have to do with the accuracy of IR camera readings? Or anyone's ability to dra...

Pulling a vacuum on a plugged syringe requires an input of work, the gas inside expands doing work for an adiabatic temperature drop. The work input by pulling, plus the work output by the gas, are both absorbed by the atmosphere, changing it negligibly, storing the energy as a spring. The springin...