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... What I'm still trying to fathom is why your temperature IR camera, appears to have little experimental control. No known temperatures to read, ice, boiling. ... The camera was factory calibrated. I did tests when I got it. It seemed to read OK using ice, boiling water etc. For relative temperat...

There is an Australian(?I think) company getting into this hydrogen heat. Catalyst technology big time. https://youtu.be/qng_UEQSY04 https://youtu.be/3Lyfn5AooSg Articles I've found though say the catalyst used is "secret", proprietary, patented. Earlier in the previous above video he show...

There is a rather astonishing demonstration of a Stirling engine running on hydrogen gas. Or heat from hydrogen gas but without a flame. The outside of the displacer chamber is coated with some kind of catalyst. The demonstration is well into the video about 23 minutes almost at the end Here he's de...

The description of the regenerator found here: http://hotairengines.org/open-cycle-engine/wilcox-1860/wilcox-hot-air-or-caloric-engine Seems very different from what is depicted in the illustration above. The regenerator design is quite interesting in that it expands radially outward from the center...

One thing I haven't tried yet, I don't think, is running one of the modified LTD engines with a retrofit regenerator on ice/ambient heat. Well, I did once and the engine froze up, or something. Anyway, a slight modification of the drawing I posted earlier in the thread: Compress_20240507_135720_0200...

You could be right. I would have basically agreed up until yesterday, given my newly found "inspiration" that a regenerator is actually, perhaps, more for cooling. To take heat temporarily out of the picture during compression, rather than for just conserving heat necessarily. I can say, a...

Due to the thin brass walls(.015") of the main tube, displacer and power piston, the original Essex has pretty effective regeneration without any additional dead space or flow restriction. I'll try to film a thermal video to show this later. True to some degree I guess. But a "regenerator...

"Pretty obviously the elevated heat signature appearing around the power piston could only be from "work"." Why is that? Could the heat not come from the working fluid? Well, maybe. How? It's the cold side of the engine. The top of the engine in contact with the working fluid is...

I've had recently what I feel is a new insight into the value of a regenerator. I never thought it worth much as a means of storing excess "waste heat" that would otherwise be lost, on the basis that a well designed efficient engine shouldn't have any waste heat, but even so, it seems such...

... Longer stroke increasing adiabatic cooling? Wouldn't that also increase adiabatic compression, for an identical adiabatic temperature rise reverse stroke? Remember the gas is in the cold space more so, during compression? Hmmm ... This is your constant refrain, but it is apparently wrong. The m...

Kind of reminds me of my old "hot potato" engine hot_potato_engine.gif Or the more recent "Ringbom" type actuated "hot potato" Resize_20230929_120924_4460.jpg https://stirlingengineforum.com/viewtopic.php?p=22527#p22527 Both are Essex type single cylinder opposed piston...

For me it looks like more beta, because it is possible to reduce dead volume on compression stroke - power piston can follow into displacer area like in beta type ? Very interesting. I had thought as much, but not having the actual engine I wasn't completely sure. I'm wondering if any Essex engines...

Not exactly, but kind of similar in principle to an idea I was exploring a while back, I think maybe:
viewtopic.php?t=5578

https://m.youtube.com/watch?v=P11q-BAhvqk You claim the engine was running for three hours, but it is clearly removed from the heat seconds before all measurements are made. Placed on a "cold" ambient table cooling it enough that even when placed back on the water cup, with mist coming of...

The gas liquefaction process is pretty simple. 1) Cool and compress the gas. 2) Expand the gas while making it do work. Well for a power producing engine we really don't want to throw the heat/energy away to just make cold to liquify the gas, we want to get the work out of the gas as it expands. If ...