Not exactly, but kind of similar in principle to an idea I was exploring a while back, I think maybe:
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- Mon May 06, 2024 8:25 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Wilcox Caloric, 1860, open-cycle, regenerator
- Replies: 1
- Views: 20
- Mon May 06, 2024 8:05 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 102
- Views: 940
Re: Tesla's Ambient Heat Engine revisted
https://m.youtube.com/watch?v=P11q-BAhvqk You claim the engine was running for three hours, but it is clearly removed from the heat seconds before all measurements are made. Placed on a "cold" ambient table cooling it enough that even when placed back on the water cup, with mist coming of...
- Mon May 06, 2024 7:26 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Compression cycle.. worthwhile?
- Replies: 10
- Views: 9807
Re: Compression cycle.. worthwhile?
The gas liquefaction process is pretty simple. 1) Cool and compress the gas. 2) Expand the gas while making it do work. Well for a power producing engine we really don't want to throw the heat/energy away to just make cold to liquify the gas, we want to get the work out of the gas as it expands. If ...
- Mon May 06, 2024 7:15 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 484
- Views: 24764
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
...There are people reading this that will get it.... Get what? As far as I'm concerned you seem like one of the "good students" who learned dutifully to memorize and regurgitate the 200 year old obsolete so-called "science" of Carnot "calorics" theory without question...
- Mon May 06, 2024 6:23 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Compression cycle.. worthwhile?
- Replies: 10
- Views: 9807
Re: Compression cycle.. worthwhile?
An interesting video on adiabatic expansion-cooling. https://youtu.be/4GL2jj6XJGk Note however, these demonstrations do not involve expanding the gas inside an engine cylinder to drive a piston to do shaft work, which is much more effective . The only "work" involved in these demonstration...
- Mon May 06, 2024 4:33 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Compression cycle.. worthwhile?
- Replies: 10
- Views: 9807
Re: Compression cycle.. worthwhile?
A very old but still ongoing debate. One thing not addressed in the above exchange is the "vacuum" produced to initiate the return "power stroke" that is cooling by the displacer shifting the working fluid to the cold side causing the gas to "contract", being assisted o...
- Mon May 06, 2024 11:56 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 102
- Views: 940
Re: Tesla's Ambient Heat Engine revisted
This is after three hours running on boiling hot water. That entire engine top has an aluminum cylinder fused together with the aluminum top plate. A stock engine. The power cylinder and cold plate are stock, as they came in the kit, unmodified, not insulated, no acrylic, no aerogel. Only the sides...
- Mon May 06, 2024 10:26 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 102
- Views: 940
Re: Tesla's Ambient Heat Engine revisted
...I found it interesting that static test froze LTD...akin cold going to hot vs hot going to cold.... That was rather perplexing. I think though, it is more a symptom of a lack or "heat flow from hot to cold" vs. boyancy. The engine is down in an insulated "cold hole". I had ex...
- Mon May 06, 2024 9:39 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 484
- Views: 24764
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
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...
- Mon May 06, 2024 9:31 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 484
- Views: 24764
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
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...
- Mon May 06, 2024 8:48 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 484
- Views: 24764
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
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...
- Mon May 06, 2024 8:13 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 484
- Views: 24764
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
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 ...
- Mon May 06, 2024 7:45 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 102
- Views: 940
Re: Tesla's Ambient Heat Engine revisted
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 ...
- Mon May 06, 2024 2:03 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 484
- Views: 24764
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
"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 ...
- Mon May 06, 2024 1:59 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 102
- Views: 940
Re: Tesla's Ambient Heat Engine revisted
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.