Search found 3590 matches
- Wed May 22, 2024 9:09 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 232
- Views: 3401
Re: Tesla's Ambient Heat Engine revisted
I'm done with this discussion as well. You have your opinion, I have mine. If I did not think there was a chance the butane fridge would work, I wouldn't bother sending for the parts to replicate it. I've been studying refrigeration and air conditioning since taking 2 years of small engine and appli...
- Wed May 22, 2024 8:01 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
Well Tom you said it yourself. If the answer to my question violates the laws of thermodynamics, then it is certainly outside of tradition. Well, I don't know how much more mainstream you can get than an AI Overview: Compress_20240522_105443_3860.jpg There is no issue when it comes to the first law...
- Wed May 22, 2024 7:39 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
This; https://physicstasks.eu/2179/work,-pressure-and-heat-of-the-air-during-isothermal-expansion Already cited and many other similar examples, online discussions regarding isothermal expansion and the conversion of heat into work seem applicable to your question. At least from a theoretical and ma...
- Wed May 22, 2024 7:05 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
Stroller wrote: ↑Tue May 21, 2024 5:24 am It's the action of the expanding gas "consuming" energy that I am interested in. Is internal energy really reduced when the gas expands, other than by conduction losses to the surrounding colder surfaces of the engine. And if so, how exactly? The ...
- Wed May 22, 2024 6:56 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
Your anticipated response is why I gave you your thread back, obviously. Kindly stay away from mine. Thank you. You claim your example, as a Stirling cycle, is "MORE relevant to thinking about DIY Stirling engines". It bears no resemblance to a Stirling cycle of any kind, theoretical or p...
- Wed May 22, 2024 2:38 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
- Tue May 21, 2024 9:29 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The Carnot efficiency problem
- Replies: 270
- Views: 119924
Re: The Carnot efficiency problem
You asked. Sorry, if they are incongruent with yours. This is an open forum. Call my knowledge "superior" isn't helping you or me. Your knowledge and mine are equal in that our points are based on what we have learned. I as well as you and others here try to learn things from others, and ...
- Tue May 21, 2024 9:10 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's "Ambient Heat Engine" Experiment
- Replies: 202
- Views: 193888
Re: Tesla's "Ambient Heat Engine" Experiment
Apparently I need further clarification. Sorry. You are going to ridiculous, bizarre extremes to "prove" my statement that compression generates heat of compression during compression is "misleading". Just because heat is also added due to displacer motion is irrelevant to the f...
- Tue May 21, 2024 8:50 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
...The link you sent left out what accomplished the expansion. It states clearly: "heat supplied to the gas". Also: "work performed by the gas " Perfectly clear IMO. "Heat supplied to the gas" "work performed by the gas" Anyway, this is VincentG's question to...
- Tue May 21, 2024 2:11 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The Carnot efficiency problem
- Replies: 270
- Views: 119924
Re: The Carnot efficiency problem
Driving posters away opens the door for new posters to which your job, as educator, starts up at the beginning. As I've tried, you have identified an anomaly that bares further investigation. But it still may fit nicely into 200 year old and current theory. Your methods of discourse here suffer fro...
- Tue May 21, 2024 1:35 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's "Ambient Heat Engine" Experiment
- Replies: 202
- Views: 193888
Re: Tesla's "Ambient Heat Engine" Experiment
As you like to point out the "heat of compression" is "instantaneous" so it stops when the volume change stops. The gas is being pushed through the regenerator to the hot space at the fastest rate. Compression is zero. Delta energy from compression is zero during this period. So...
- Tue May 21, 2024 1:04 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
The online example says nothing about "pulling" You would only have to pull on it for the whole stroke if the buffer pressure were at or higher than P1. P2 is even lower. If the buffer pressure where lower than P2 no pulling would be necessary for the whole stroke, but a stop would be nee...
- Tue May 21, 2024 12:26 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
I suppose I should mention the first is energy/work out, the second requires energy/work input. The first pushes, the second must be pulled. I hope this makes sense. The online example says nothing about "pulling" Ideal gas of a volume of 1 m3 at initial pressure of 200 kPa is expanding i...
- Tue May 21, 2024 11:42 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's "Ambient Heat Engine" Experiment
- Replies: 202
- Views: 193888
- Tue May 21, 2024 11:14 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 607
- Views: 29590
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
P1V1/T1 = P2•V2/T2 For the given parameters: P1=P2 Canceling P from both sides: V1/T1 = V2/T2 From given parameters: T2=2•T1 Inserting in to the equation: P1/T1=P2/(2•T1) Dividing both sides by (2•T1): P1•(2•T1) / T1 = P2 Cancelling T1 top and bottom and rearranging: 2•P1 = P2 Please show your &quo...