Search found 3477 matches
- Sun May 12, 2024 8:59 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 504
- Views: 26549
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
... OK. If you don't think Stirling engines run on differentials in pressure and that increasing the temperature differential by cooling the cold side will increase the pressure differential then I'm sorry. ... That is a conditional "apology" based on a misrepresentation of my position, s...
- Sun May 12, 2024 8:52 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 504
- Views: 26549
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
... please don't respond to mine either. ... I'll respond (politely) as I see fit, in particular any time I'm being misrepresented, my experiments are being criticized, my intentions are being falsely represented, foolish theories regarding my experiments are being put forward in an effort to dismi...
- Sun May 12, 2024 8:03 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 148
- Views: 1891
Re: Tesla's Ambient Heat Engine revisted
The average bulk temperature is what the engine reacts to. ... ... Just curious but what do you define as "average bulk temperature".? And in what way does the engine react to the "average bulk temperature". Do you perhaps mean the thermocouples "reaction" due to slow ...
- Sat May 11, 2024 11:52 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 148
- Views: 1891
Re: Tesla's Ambient Heat Engine revisted
Say I'm wrong. Regardless, it appears that something , friction, pressure, or some unidentified mystery force is elevating the temperature around tbe piston/power cylinder while the top cold plate appears to remain cool. If the power piston were further away from the top plate, possibly my theoretic...
- Sat May 11, 2024 3:56 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 504
- Views: 26549
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
I came across two opposing theories. One says basically heat is a fluid and runs through a heat engine like water. The other says heat is energy and basically "disappears" inside the engine, as it is converted to work. If the latter is true, then it is really not necessary to design an en...
- Sat May 11, 2024 1:40 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 148
- Views: 1891
Re: Tesla's Ambient Heat Engine revisted
... Work is the easiest to measure. ... Alternately a generator and voltamp meter could suffice. I pointed out that this is the main thing lacking from Tom's experiments too. As anyone who's been here any length of time, I've been running generators and using volt meters and amp meters when appropr...
- Fri May 10, 2024 5:10 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Does a medium sized SE exist that could charge 12 V car battery properly?
- Replies: 8
- Views: 7714
Re: Does a medium sized SE exist that could charge 12 V car battery properly?
I first became aware of this ability of Stirling engines to "grow stronger" under a gradually increasing load reading a VITA publication authored by William Beale: PDF: https://pdf.usaid.gov/pdf_docs/pnaas739.pdf Compress_20240510_200747_7072.jpg This is probably the result of the added wo...
- Fri May 10, 2024 4:22 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Does a medium sized SE exist that could charge 12 V car battery properly?
- Replies: 8
- Views: 7714
Re: Does a medium sized SE exist that could charge 12 V car battery properly?
This engine made from water bottles, according to the description, is charging two 12 volt batteries. https://youtu.be/CXsFAB77Mzo Only a few watts though. How do you define "properly"? Almost any wattage will charge a battery eventually . Most common car battery chargers are between 2 amp...
- Fri May 10, 2024 3:37 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Does a medium sized SE exist that could charge 12 V car battery properly?
- Replies: 8
- Views: 7714
Re: Does a medium sized SE exist that could charge 12 V car battery properly?
15Watts for $499. Plus $150 shipping. :laugh: petrol shill :laugh: :laugh: What are you planning on firing your 15W generator with Tom? How much do you think it'll use? There is room for a lot of improvements. The displacer chamber and the displacer itself, I found, are made of ordinary steel, not ...
- Fri May 10, 2024 3:05 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Does a medium sized SE exist that could charge 12 V car battery properly?
- Replies: 8
- Views: 7714
Re: Does a medium sized SE exist that could charge 12 V car battery properly?
This is a nice little semi-DIY engine with 12v output potential.
Based around some cheap stainless steel cooking pots but would obviously take some skilled machining to actually build.
https://youtu.be/QcppEhp2RfA
Based around some cheap stainless steel cooking pots but would obviously take some skilled machining to actually build.
https://youtu.be/QcppEhp2RfA
- Fri May 10, 2024 12:39 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 504
- Views: 26549
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
... The videos are awesome. Thanks for posting those. Watching the top of the displacer dome make liquid air recalls Tom's contention that mechanical work can reduce the temperature of the working fluid , ... That's hardly my "contention", it's a well established fact. Textbook physics/th...
- Fri May 10, 2024 11:52 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 148
- Views: 1891
Re: Tesla's Ambient Heat Engine revisted
... 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 ...
- Fri May 10, 2024 9:08 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Does a medium sized SE exist that could charge 12 V car battery properly?
- Replies: 8
- Views: 7714
Re: Does a medium sized SE exist that could charge 12 V car battery properly?
BTW, that eBay engine looks bigger than it actually is.
There is a pretty big compartment underneath just for housing the burner.
There is a pretty big compartment underneath just for housing the burner.
- Fri May 10, 2024 8:07 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Does a medium sized SE exist that could charge 12 V car battery properly?
- Replies: 8
- Views: 7714
Re: Does a medium sized SE exist that could charge 12 V car battery properly?
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...
- Thu May 09, 2024 4:44 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 148
- Views: 1891
Re: Tesla's Ambient Heat Engine revisted
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...