Metronome Thermoacoustic Heat Engine:
Compelling Engine:
How do it works?
How do it works?
Rezonator (outer piston with mass) moves but inner membrane has phase delay,
because gas behaves in the loop (due to the mass of the gas) as if it were a solid displace piston.
Outer membrane is 40mm (pvc tube) wide and inner is 80mm (jam jar cap
).
Inner membrane is only on 10-20mm wide disc connects the rod.
So far, I have built immediately worked well.
I don't know how the engine changes when the pressure is higher (not atmospheric).
Materials:
-iron mop handles about 20-30cm long:
http://img.frbiz.com/pic/z2680ecc-0x0-
-membranes thin rubber gloves from a pharmacy
Why is this a good engine?
Very good efficiency and performance
very functional, sure to work
The power piston works a "connected " with "displacer " than similar traditional stirling machines,
so works in a wide frequency range.
No adjusting problem. Easy to pressurize!
I think this would work too, but I drew it so that it would be understood that the gas in the tube can also spring back and forth even if there is no membrane (membranes is instead a light pistons), and then the membrane here symbolizes the gas in the tube with its mass:
I think this engine is Compelling Engine also. What was striking, however, was the very high frequency and the fact that it operated with a very small flame also. It’s very hard to build, but it would be worth to know better.
It can work with an accordion, because a wide accordion is like lightening the weight, meaning it has a small weight compared to its width, and since it has no side bulge, its weight should be coordinated with the length of the loop. If the weight is greater, a longer loop is needed, because the gas is the spring in the bypass.
Compelling alpha:
This engine was built by T K motors. is it thermoacoustic or not?
Hybrid geometry with traveling wave feed back:
Trillium thermoacoustic refrigerator (loop-alfa mix.):
Etalim (similar as active membrane TE):
Hibrid Cascade:
