Stirlingengineforum.com

... I'm trying to be open-minded about everything, so I definitely don't believe _anything_ about temperature distribution ... One thing that is fairly obvious. Atmospheric pressure across the entire globe varies very little from 14.7 psi By comparison air temperature can vary quite markedly, even ...

BTW, that eBay engine looks bigger than it actually is.

There is a pretty big compartment underneath just for housing the burner.

8 amps would be a good charge rate for a 12V car battery. That's 12*8 = 96 Watts An unpressurised SE using air making 100W might be fairly chunky unless its of Andy Ross level sophistication. Possibly bigger and heavier than my 40 year old Honda EG550 sidevalve generator, which will make 450W conti...

To prove gases contract. A plugged syringe at atmospheric pressure, temperature and half full must be put into an ice water bath. After the air cools and the atmosphere pushed, compresses, in the cold gas. Put the bath and syringe into a vacuum chamber and evacuate the air. It will need to stay con...

Fool wrote: ↑Thu May 09, 2024 4:17 pm Heat is returned in a thing called a heat pump.

How?

The heat engine runs a generator.

The heat is converted to electricity.

You can't return what's no longer there. Or anywhere. It's no longer heat at all.

The "heat" has been converted and has gone out as "work".

... Your twisting of evidence, inconsistent logic, slippery slope and other logical fallacies are very plain to see. If the Carnot limit is 20%, the reversed Carnot will have a COP of 5, ideally. The two hooked together will return 100% of the heat back to the hot source, removing all heat rejected...

... ..., it all boils down to the fact that expanding internal gas outputs energy. Compressing gas absorbs energy. Both for the entire stroke. The system, engine, will put out energy during expansion and or absorb it depending on which way the pressure difference is compared with the motion. Higher...

Fool wrote: ↑Thu May 09, 2024 4:20 am ...

The Carnot theory is based on W=Qh-Qc. You have only measured temperature...
...

No it isn't. That is conservation of energy plain and simple. The Carnot limit contradicts conservation of energy.

The rest of your post, as usual, is mostly opinionated, largely incoherent rambling.

I know you've seen the following two video links before. When you make engines as capable as these, or better, using your theories, people will be more willing to listen. Until then you will get a lot of opposition. Be very kind to those that stop to listen, and even kinder to those that enter into...

It's just one wishy-washy sequence in essentially an open chamber. The gas is free to move around. Even with the displacer fully raised, convection causes the cold gas to sink and be replaced by hot gas, which in turn is cooled, and again sinks. I know I mentioned the speed of sound before, but as ...

OK, no problem. I'll leave you with a last attempt to be helpful. If your power piston is graphite, just be aware that it has an emissivity around 4x that of aluminium. That means it radiates energy much more effectively than the top plate. That will cause it to have a higher temperature, given pro...

as can also be seen in the videos I did check the temperature from time to time. But of course, you're prone to pass judgement, criticise and comment on videos of experiments you haven't bothered to watch but supposedly "skimmed through". I'm not passing judgement, and my criticisms are o...

Something else to consider: as effective as that regenerator appears to have been, there does not appear to be all that much of a temperature gradient. Compress_20240508_133713_3920.jpg Probably making the displacer chamber deeper with a thicker displacer so more layers of pull chain could be fitted...

Not to forget the boiling water it's been sitting over for three hours. Did you measure the temperature of that three hour old "boiling" water? The water was poured into a dewar double wall vacuum insulated flask, which by previous tests, filled with boiling water could keep a Stirling en...

Your power piston cylinder appears at a higher temperature than the top of the cold plate. I can only guess why from the information recorded. Work is certainly a factor to consider. What it read before running wasn't given to me. I would expect the top of the cold plate to not be changing temperat...