Search found 3460 matches
- Thu May 09, 2024 12:25 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
... ..., 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...
- Thu May 09, 2024 9:00 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 492
- Views: 25626
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
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.
- Thu May 09, 2024 8:52 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 492
- Views: 25626
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
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...
- Thu May 09, 2024 8:14 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
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 ...
- Thu May 09, 2024 8:00 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
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...
- Thu May 09, 2024 2:30 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
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...
- Thu May 09, 2024 1:54 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
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...
- Thu May 09, 2024 1:19 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
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...
- Wed May 08, 2024 9:10 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
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...
- Wed May 08, 2024 7:55 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
Not sure how you figure "hot" gas is expanding into the power piston. The cold gas, for the most part, is heated and expanded below the displacer as the displacer raises up and drives cold air down to be heated. Aside from that, we can generally say the gas does not actually heat up that ...
- Wed May 08, 2024 7:34 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
The way I look at it. If the cold side is 62°F and the power piston is 75°F from heat from friction, after three hours, since the two are in direct contact 62°F is likely the average temperature between the the power piston and the working fluid. Logically some heat from friction would be leaving th...
- Wed May 08, 2024 1:15 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Compression cycle.. worthwhile?
- Replies: 12
- Views: 9863
Re: Compression cycle.. worthwhile?
"Ah..., that doesn't apply to Stirling engines", I've been told again and again. If not, why not. The energy represented on a PV diagram depends on path, and the direction traveled on the path. The initial difference between a Stirling Engine and a Stirling cooler is the direction taken o...
- Wed May 08, 2024 12:41 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 492
- Views: 25626
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
Can we see some of your test results demonstrating the Carnot limit using properly calibrated thermal imaging? Thermocouples? Finger feel, "seems hot" readings? Anything? You, Carnot, Kelvin, Clapeyron, Clausius, Maxwell, Gibbs, Boltzmann, Joule, anybody? Has ANYONE verified this so-called...
- Wed May 08, 2024 12:02 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 492
- Views: 25626
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
You seem to have a double standard when it comes to questioning "science". You heap mountains of derision and impossible levels of independent replication and verification etc. etc. on my casual kitchen table experiments but YOUR supposedly established science Carnot/Kelvin "efficienc...
- Wed May 08, 2024 10:41 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 135
- Views: 1575
Re: Tesla's Ambient Heat Engine revisted
In the video where I pull back the insulation, the IR image and readings seem to indicate a clear division between the hot regenerator (87°F) and cold top plate (62°F) Compress_20240508_133713_3920.jpg The power cylinder is also near the forefront of the image, but this was the first video taken wit...