Stirlingengineforum.com

... To say the engine "runs on a temperature differential" suggests or implies, or a causative relation. ... Should have been To say the engine "runs on a temperature differential" suggests or implies, or assumes a causative relation." Not sure what my phones rather over ze...

To add to the above. A Stirling engine, much like a heat pump or refrigerator, at least in part CREATES a temperature differential, or perhaps MAINTAINS the given temperature differential, it does not "run on" the temperature differential. To say the engine "runs on a temperature diff...

The new meter and thermocouples arrived today Compress_20240512_125355_5025.jpg For the experiment, when the engines arrive, I won't be posting to this thread though. As I don't think that is what Matt started the thread for. There is a previous thread where this experiment was first proposed I may ...

... 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...

... 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...

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 ...

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...

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...

... 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...

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...

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...

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 ...

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

... 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...

... 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 ...