Stirlingengineforum.com

What's the final grams per cc of that substance after firing? Does it take a direct torch flame okay?

Not to dissuade you from a creative endeavor, but energy-wise that's about equivalent to a 20kw PV array, or about $5k USD if you scrounge around for surplus panels. Have you worked out the price of that other stuff? Easily equivilant to the cost of a new home, if you can even buy an engine of that ...

Power piston or displacer? I assume power, but that doesn't normally get hot, so not quite understanding the design you have in mind. What is your cylinder made from? If it's test tube glass, I've used cement mortar mix before (the 15 min setting stuff) since the glass is more than hard enough to ha...

Last site archive March 2022

Videos and a product catalog also present there.

I think they might be referring to this kind of design, except the hot part would go in the center and incoming cool air would enter from the perimeter over the cold side of each engine.


https://www.youtube.com/watch?v=K-DUXHRjWKw

baking soda will "melt" when heated by itself, but by itself is easily crushed back into a powder when it cools. This is how I make my washing soda, but lower temperatures. At least it's fire proof: baking soda.jpg Well, it probably has good insulating properties. Sounds like it could be ...

I don't read a bit of Japanese, but the images, drawings, and videos are very helpful. Looks like very simple and effective implementation that could have endless utility. I also got a laugh at there being this potentially transformative technology being offered alongside a car wash soap wand. Creat...

Looking for foamed glass recipes I came across some videos about "elephant toothpaste". With some refractory and maybe Portland cement, perhaps glycerine instead of dish soap who knows, experiment, but looks like potentially a quick way to experiment with different formulations in small b...

This is useful, thank you. I can only speak for myself, but were I in the market for a commercial generator, it wouldn't be for a comprehensive solution like this, but instead just the generator with an exposed hot end where I would build and apply my own heat source/sink within specs. I understand ...

And this one confirms they were making them at least as late as 2020. I'm guessing they were sold to the well operator at more than 2x the price they sold for here.

Just missed the bidding on one here. Looks like they have multiple units.

Some extensive details on them here

Well, my gy-906 idea failed because I didn't read the fine print. I had some modules on-hand and decided to try it. The period is in fact good enough for 1k readings per second, BUT those readings are first smoothed out through an on-board DSP filter that cannot be fully disabled. The result is that...

Tom Booth wrote: ↑Thu Feb 09, 2023 6:28 pm The labtrek kit video says they have developed a very fast thermometer with response time in milliseconds.

A common gy-906 IR thermometer arduino module can provide real-time PWM output of temperature. The PWM period is 1mS per the data sheet.

Interesting. Maybe if the flow volume is great enough the potential bubbles would be pushed along, or never have a chance to form. An occasional purging of trapped air bubbles with a pump? Now I'm wondering if some kind of valve at the highest point with an inverted bottle above it as a bubble trap...

I've actually been considering trying something similar but using a venturi type "pump" in a flowing stream, just to "siphon" cooling water to an elevated location and back into the stream. Don't know if it will work, but I've already bought the supplies. Something like: Resize_...