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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...

Stroller wrote: ↑Mon Apr 29, 2024 1:05 pm Apologies Tom, I was just making an 'over unity' joke.

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".

... You constantly leave so much out and fail to have energy direction correct. "More like 100 are converted to momentum." Because 400 are pushing out, 300 in, for 100 J. "The piston continues moving using up 100 "homunculus power" of momentum which allows another 100 to be...

Why is the cooling of the gas that results from work output so underestimated and undervalued, often as if it is not a factor at all. Because a heat engine runs on a pressure differential, it ain't a thermo couple. ... Then why is it called a "heat engine"? Anyway, a drop in temperature i...

Very good points Stroller, and Matt. Tom, work comes out of the gas during expansion, dropping the temperature of the gas. You pay lip service to the FACT, which is, of course, undeniable. But you don't seem to really believe it. Work goes in during compression, raising the temperature of the gas. ...

If heat is being converted to work then that should be easily measurable as a torque at the flywheel. But for all the Watts of heat thrown at the hot side of the engine, we see tiny numbers of fairy lights being illuminated by weeny flywheel driven dynamos. Conclusion: getting heat from blowtorch i...

Matt, IMO, seems to be our resident agent saboteur. I suppose he considers it his patriotic duty to protect US oil interests or something.

Ambient powered Stirling spinning a cryo-mode Stirling to freeze the cold hole to -280F. Cryo-mode Stirling Warm-side-rejected-heat fed back to ambient powered Stirling warm side. Free lunch plus ice-cream dessert with a cherry on top. :cool: Trying to run a heat engine on "Cryo-mode Stirling ...

In a good running Alpha, the hot piston is the prime mover. The cold piston being pressured back towards BDC is just a flaw in phasing( as often pointed out by Matt ) and is hopefully avoided. I've come to take just about anything Matt says as intentional sabotage or a red herring. If you want a St...

Just to be clear, atmospheric pressure is at the horizontal line. Compress_20240429_015658_8970.jpg The piston returns 99% of the way by mother nature's "free lunch" as you call it. Actually all the way. The piston has momentum. That too comes from atmospheric pressure. You have head of Ne...

... You seem to be always dismissing the backwork of compression as if the ambient compression of your LTD is a free lunch thanks to Mother Nature... I don't think LTD's are functionally any different than so-called "thermoacoustic" or lamina flow, thermal lag. The pistons return EASILY, ...

.... Good catch Tom on the animation where most of the ideal constant volume transfers are lost amidst real out-of-phase pistons. I'm not sure what I caught that is described by what you just said. "Ideal constant volume transfers"? "Lost"? I can't say I caught that, really, as ...

I may be wrong, but given that pressure and temperature are more or less associated, I can't help but wonder how the working fluid falls, and stays, so far BELOW atmospheric pressure, all the way back to TDC. Resize_20240428_230612_2510.jpg A drop in pressure down to around atmosphere, can be attrib...

Start out with three hundred Homunculus's, little humans, inside an engine pushing out. Add one hundred more. As they push out they get converted to work. After 100 have been converted to work expansion stops. Pushing the piston back in using the work that came out, causes 100 Homunculus's to reapp...