Water and gravity: look at this video

[sm0ky2]

If we take two divers in one aquarium. And connect them mechanically with the necessary interaction.
When one sinks and contracts, the other will rise and expand. The water level at the top will not change.

Pressure in a sealed vessel is equal throughout the vessel
One cannot sink while the other rises

[sm0ky2]

Two tanks would then be required and instead, a pressure sealed axle passes through and between
the two tanks. Two mechanically linked, insert able pistons and cylinders (one for each aquarium),
would then be required.

I like this idea:


Working pressure from one chamber acts on the pressure in the opposing chamber
In this method, it may be possible to have a tandem system.


In such: the decompression energy from one chamber could add to the compression energy of the other, thereby lowering the energy required to compress the air.
The equilibrium state would be approx half-compression in both.
The piston would only have to half-compress either chamber while energy is extracted from both.
Hmm

[sm0ky2]

Yes, there are maybe many options.
But It seems to me that if such serious people as Rosch did not succeed, if this is a fake, then there is nothing to look for in this direction.

The mathematics implies that there is significant energy that could be extracted.


Remember with solar and wind: our early designs were far less efficient than the ones in use today.


Also:  the failures of one group bears little on the successes of another.
Regardless of how serious or well funded the one may be.

[sm0ky2]

And how do German "rosсh" installations known work?
Or they don't work?

Not sure if i have a reference to their work.
Is this the "rosch" type device?


https://youtu.be/8Zenn0VD2Bo


If so:  this is one of the compressed air powered Plank's Engines.

[sm0ky2]

Sm0ky2 - Thanks for your reply.  Not withstanding the further comments about possible problems recapturing energy from the solenoid, I'm still puzzled how nearly all the energy powering a solenoid in this situation can be theoretically recaptured.  The plunger would need to be held either in or out, depending on the solenoid's orientation, for a period of time during which there will be I^2R losses in the coil that can't be recaptured, won't there?  Please correct my thinking if I misunderstand.  Thx.

In practice, a true electric solenoid may be impractical.
This was used mostly as an analog. A mechanical gearing system or spring based system, or even pneumatic systems may be more feasible for the compression/decompression mechanism.


To actually recover the energy using an electric solenoid would result in great electrical losses do to the decompression rate being rather slow.