Search found 3507 matches
- Thu May 16, 2024 10:30 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 532
- Views: 27993
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
.... pressure drops during an isothermal expansion. The pressure and temperature won't drop if the right amount of heat/energy is being put into the gas as it expands. ... What determines the "right amount"? Aside from the opinion of "Stroller". A "perfect" Carnot expa...
- Thu May 16, 2024 10:03 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 174
- Views: 2416
Re: Tesla's Ambient Heat Engine revisted
Is anyone familiar with these inline high pressure fuel pumps? Compress_20240516_124949_9044.jpg Designed for cars with fuel injection. Up to 125 psi MAX. Flow rate 135ltr/hr @ 3bar (35 gal/hr @ 45 psi) Maximum pressure 8.5bar (125 psi) Seems like more than enough pressure. From what I read somewher...
- Thu May 16, 2024 9:13 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Kontax KS90v thermal experiments
- Replies: 1
- Views: 21
Re: Kontax KS90v thermal experiments
One down: https://youtu.be/b8ExVO1WIwc Sounds a bit scratchy to me. Not sure why. This doesn't really seem to be a "heat of your hand" engine. At least I couldn't keep it going on just heat of my hand. It's a fairly warm day though, and it hasn't been broken it at all yet. Runs beautifully...
- Thu May 16, 2024 6:56 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Kontax KS90v thermal experiments
- Replies: 1
- Views: 21
Kontax KS90v thermal experiments
This is going to take a while:
- Thu May 16, 2024 5:56 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Carnot was being too generous
- Replies: 15
- Views: 188
Re: Carnot was being too generous
It's funny how an "offer that can't be refused", leaves all those inventors, poor, discredited, often I'll, and followed by ever becoming more stubborn fools. Only those that can't be bought. Only the well educated seems capable of seeing through their veil of lies, and self delusion. By ...
- Wed May 15, 2024 9:56 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 174
- Views: 2416
Re: Tesla's Ambient Heat Engine revisted
Tom can you unpack that? How would it work without an orifice? I didn't say it would work "without an orifice". Fool claimed: They don't even have an acceptable orifice. Didn't make or install one. Pretty obviously he doesn't recognize common refrigeration components, even while watching ...
- Wed May 15, 2024 6:45 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 174
- Views: 2416
Re: Tesla's Ambient Heat Engine revisted
Case in point.
Apparently you don't know much about refrigeration.
Anyway, I'm adding this to my projects list. The more of these little butane refrigerators
I see, the more convinced I am it can work.
- Tue May 14, 2024 9:09 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 174
- Views: 2416
Re: Tesla's Ambient Heat Engine revisted
Nothing I've seen is more obviously faked than those garbage cooler unit videos. Nice try. There are scads of them too. The amazing thing is how many people those fraudulent videos seem to fool. Take a look at how uneven the coils develop frost and location of first frost. How little an amount &quo...
- Tue May 14, 2024 3:13 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 174
- Views: 2416
Re: Tesla's Ambient Heat Engine revisted
-32°C with a 9 volt battery?
https://youtu.be/26uq_qHKRjU
I think I'd have to see it to believe it.
The guy does seem to understand air conditioning systems though.
https://youtu.be/26uq_qHKRjU
I think I'd have to see it to believe it.
The guy does seem to understand air conditioning systems though.
- Tue May 14, 2024 2:11 pm
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 174
- Views: 2416
Re: Tesla's Ambient Heat Engine revisted
The power supply to run that little freezer was allegedly, just 2A Compress_20240514_164949_9056.jpg 24 watts for an alleged nearly instant -30°C in open air. I guess I'm probably wrong, but that doesn't seem like that high of a bar for a small Stirling engine. 4 watts from this setup: https://youtu...
- Tue May 14, 2024 11:44 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 532
- Views: 27993
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
... Instead, re-framing "100%" efficiency seems more productive imo. The problem I have with the "Carnot Limit" calculation is that it "reframes" efficiency within its own definition of efficiency. First you add say 1,000 joules or whatever. Any sane reckoning of effic...
- Tue May 14, 2024 9:37 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
- Replies: 532
- Views: 27993
Re: The TRUTH? η = 1 – (Qc / Qh) = 1 – (Tc / Th)
Tom, The "absolute zero" thing is a core part of the definition of efficiency for a fuel-powered engine - if the exhaust is at any temperature above absolute zero then there is energy being wasted. It's a particularly poor definition for Stirlings, with the many possible energy sources, b...
- Tue May 14, 2024 8:37 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Carnot was being too generous
- Replies: 15
- Views: 188
Re: Carnot was being too generous
Good stuff. The fact is that anyone, myself included, trying to beat Carnot is going to have to present rigorous testing and all inclusive data to back up the claim, and that's just to get taken seriously in the first place. Then comes the naysayers and all the rest. Not really. Nobody cares a lick...
- Tue May 14, 2024 8:06 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Tesla's Ambient Heat Engine revisted
- Replies: 174
- Views: 2416
Re: Tesla's Ambient Heat Engine revisted
As far as I can tell, this video appears to be legitimate. https://youtu.be/g5uFyf9_1GM At least the simple refrigeration system appears to be constructed using conventional refrigeration system principles. The question is, could the cold produced be used to operate a Stirling engine on the surround...
- Tue May 14, 2024 1:44 am
- Forum: Stirling and "Hot Air" Engine Forum
- Topic: Entropy
- Replies: 9
- Views: 108
Re: Entropy
Entropy. The thermodynamics definition boils down to: S = ∆Q/T ... The equation appears to be incorrect, or at least there is some debate about it: One person says the correct form of the equation is: ∆S = Q/T Another says: ∆S = ∆Q/T Someone else: T∆S = ∆Q https://www.quora.com/How-was-the-entropy-...