what annoys me with the stirling is that we do not find much on his famous Regenerator ...
because without that, the output does not take off
Micro Cogeneration domestic
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Philippe Schutt
- Econologue expert
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- Registration: 25/12/05, 18:03
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And yes, that's right, I designed a stirling and I realized that the regenerator is a real trap.
But all the problems are getting around, there are only solutions.
Thus, I opted for the Ericsson formula, which is a little more complicated, but surprisingly more flexible in terms of heat transfer and flow. With valves and valves we control the flow, exactly as on an internal combustion engine.
The advantage is that the working fluid travels a loop, and instead of a regenerator, a heat exchanger does the trick.
Fluid movements are not alternative.
What we lose in simplicity, we finally get back, because the regenerator is no longer a problem.
Another big advantage, with the Ericsson engine, we do not heat the cylinder, we heat an outside volume; it is thus possible to allow the pressure to rise, and to open the valve at the desired moment. So we gain considerably in power compared to a Stirling engine.
It's a bit of a puzzle to put some valves in, but the game was worth the candle, I'm proud of my job. But I still have some way to go before making a prototype and considering a series production. That said, I designed the mechanics by integrating a maximum of parts of the industry, it avoids a lot of expensive machining. And since the heated volume is not on the cylinders, I'll be able to easily predict what to switch from solar, to fire, and vice versa.
But all the problems are getting around, there are only solutions.
Thus, I opted for the Ericsson formula, which is a little more complicated, but surprisingly more flexible in terms of heat transfer and flow. With valves and valves we control the flow, exactly as on an internal combustion engine.
The advantage is that the working fluid travels a loop, and instead of a regenerator, a heat exchanger does the trick.
Fluid movements are not alternative.
What we lose in simplicity, we finally get back, because the regenerator is no longer a problem.
Another big advantage, with the Ericsson engine, we do not heat the cylinder, we heat an outside volume; it is thus possible to allow the pressure to rise, and to open the valve at the desired moment. So we gain considerably in power compared to a Stirling engine.
It's a bit of a puzzle to put some valves in, but the game was worth the candle, I'm proud of my job. But I still have some way to go before making a prototype and considering a series production. That said, I designed the mechanics by integrating a maximum of parts of the industry, it avoids a lot of expensive machining. And since the heated volume is not on the cylinders, I'll be able to easily predict what to switch from solar, to fire, and vice versa.
0 x
Question simplicity, the simplest is the mechanics, it is adjustable, and it does not fail.
When pneumatic valves, uh, I doubt that they resist the temperature. And it's too expensive anyway.
Otherwise, on the cycle, well I am really down to the opening time of the valves and the moment, since both are adjustable.
But I would still like to know all that, the problem is that obviously, no one can do the thermodynamic calculations, whether for a Stirling or Ericsson.
So I'm stuck in my job.
When pneumatic valves, uh, I doubt that they resist the temperature. And it's too expensive anyway.
Otherwise, on the cycle, well I am really down to the opening time of the valves and the moment, since both are adjustable.
But I would still like to know all that, the problem is that obviously, no one can do the thermodynamic calculations, whether for a Stirling or Ericsson.
So I'm stuck in my job.
0 x
You say that to a guy who spent 10 years making machining parts whether it's turning, milling, conventional, or digital.
In addition, I passed 3 diplomas by taking twice the studies and still in apprenticeship, I arrived at the BTS mechanical manufacturing option.
Roding valves in production series is not insurmountable.
No pessimism, we do wonderful things with machine tools, and it only takes a bit of imagination to make the assembly that goes well and adapt it to the machine that goes well if we want to be productive.
To go further, my father was a mechanic, it gives you an idea of the universe in which I bathed.
Today I managed to tame a design 3D design software and even to make motion simulations and other mechanisms.
When you design a motor or any mechanism and you know how to make the parts, you do not do anything anyway.
You still have some advantage over a guy who just learned the theoretical mechanics.
That said, I have no job, I put on my resume that I had engineered, and I'm taken for a crazy, or so I'm scared, maybe I disturb the established order ...
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I did a technical baccalaureate and the merchant marine school. I can turn, solder, ...
But I do not have a ride at home, nor easy access to all the materials needed to make engines. Otherwise my Minto wheel would have been out of the paper for a long time. I advance, but by the bricolole, so it's long ...
Regarding the Ericsson engine, I found an interesting site:
http://www.proepowersystems.com/PROEHOME.HTM
This gives a little idea of the cycle.
But I do not have a ride at home, nor easy access to all the materials needed to make engines. Otherwise my Minto wheel would have been out of the paper for a long time. I advance, but by the bricolole, so it's long ...
Regarding the Ericsson engine, I found an interesting site:
http://www.proepowersystems.com/PROEHOME.HTM
This gives a little idea of the cycle.
0 x
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