The real Tesla free energy machine

[Cadman]

Hello,

I have been involved in the 'free energy' movement for a good number of years. During my years of searching I had encountered the idea of using liquid air for power so when I re-read a certain magazine article some things leaped out at me that I failed to see the importance of earlier.

Although this Tesla article has been posted before, allow me to quote a few pertinent excerpts.

The Problem Of Increasing Human Energy, With Special References To The Harnessing Of The Sun's Energy
The Century Illustrated Magazine, June 1900.

"First let us ask: Whence comes all the motive power? What is the spring that drives all? .... All this energy emanates from one single center, one single source - the sun. The sun is the spring that drives all."

"...Suppose that an extremely low temperature could be maintained by some process in a given space; the surrounding medium would then be compelled to give off heat, which could be converted into mechanical or other form of energy, and utilized. By realizing such a plan, we should be enabled to get at any point of the globe a continuous supply of energy, day and night.

"...I finally conceived a combination of apparatus which should make possible the obtaining of power from the medium by a process of continuous cooling of atmospheric air. This apparatus, by continually transforming heat into mechanical work, tended to become colder and colder, and if it only were practicable to reach a very low temperature in this manner, then a sink for the heat could be produced, and energy could be derived from the medium."

The Sun's Energy. Not 'cosmic rays' or vibrations from the aether. Heat. Heat in the atmosphere, hundreds of degrees above absolute zero.

Tesla devised a machine that accomplished the goals in the article, but he never finished the supporting apparatus for the heat sink. His lab was burned while this research was in progress, delaying his work, allowing other people to patent the remaining processes before him. I believe this is why this system was abandoned, not because it wouldn't work, but because he could no longer patent it.
I believe that J.F. Place (and others) later devised the remainder of the necessary components that Tesla needed for the creation of a liquid air heat sink.

The machine is embodied in patent 514,169 Reciprocating Engine. This reciprocating engine is really a mechanical oscillator heat engine. When powered by compressed air it produces both heat and cold.

Take a close look at the patent drawing in 514,169.  The oscillator is not designed to produce shaft power (although it can). The drive piston receives a small metered pulse of air. This oscillator works exactly like a pendulum, and the air supplied is just enough to keep the piston going at the desired rate. The inertia of the two pistons also plays an important part.
If you have studied the methods used for creating liquid air you know that a small pulse of pressurized air allowed to expand while doing work undergoes a temperature drop of 125 degrees F or more.  This is a critical step in the creation of liquid air by a piston machine and the oscillator is designed to do this.
The air exhausted from cylinder A, which contains the drive piston, is always colder than the supply air. By recirculating this air in the manner shown in the following patents, the exhaust becomes partly liquid air which can be removed and stored in simple containers.

Patent of James F. Place
   Apparatus for liquefying air US711525

Other patents of interest:
   Art or process of producing liquid air US918468A
   Air liquefier and separator US1146020A
   Vessel for holding and shipping liquid air or other liquid gases US707634A

Also see Compressed Air Magazine 1902 pg 2229 under the heading Continuous Power.

Once enough liquid air is produced by the oscillator an ambient temperature boiler can convert the liquid to a very cold high pressure gas that in turn can run the oscillator, which will return the gas to its liquid state, and the cycle can continue. A compressor is no longer required once this stage has been reached.

The other product of the oscillator is high heat from compression in the air spring. Imagine the possibilities with both high heat and extreme cold.

Nature has given us a source of high heat in our atmosphere and I believe we have everything listed here to create our own power from this oven we live in.

Cadman

[Sergh]

Medieval language describes the operation principle of an air conditioner with a pneumatic drive instead of an electric one.

[ramset]

I would not be so dismissive ...its not Cadman's first summer.

harvesting from the environment has tremendous potential ....
would definitely like to understand this "liquid air" and simple storage .

[Cadman]

I would not be so dismissive ...its not Cadman's first summer.

harvesting from the environment has tremendous potential ....
would definitely like to understand this "liquid air" and simple storage .

I have devoted considerable time and thought to this and if I had the means to retire and work on this full time, i would.

At first glance this may all seem very complicated but the principle is simple.
The key action is to expand a compressed gas (air) while it is allowed to do work. The work done in this case is driving a piston in the oscillator and the gas would expand until it reaches the ambient pressure or close to it, then the gas exits through the exhaust port. That's all it takes to substantially cool the gas.

The tubes or pipes connected to the intake and exhaust ports of the oscillator are one inside the other. The exhaust is a large diameter and the intake is one or more small diameter tubes inside the exhaust tube. This forms a heat exchanger. The cold exhaust passes over the intake tubes and absorbs heat from the intake charge. The cooled intake charge enters the oscillator, is cooled even more, exhausts, and cools the next incoming charge even colder. After a time the incoming charge is so cold that the next expansion lowers the temperature to the liquefaction point of the air. Not all of the air will liquefy and the portion that does drains into a basin attached to the exhaust pipe at the oscillator engine.

That's how you make liquid air.

Of course the actual machine requires effective insulation along with other considerations like avoiding sharp turns or changes in the direction of the gas which will heat the gas, etc.

If you have never looked into this sort of thing, start by reading the Compressed Air Magazine article, that will give you a foundation for understanding. Then study the Apparatus for liquefying air US711525 patent for details of the system layout. Ignore the reciprocating piston engine in the patent as we would be substituting the oscillator engine in it's place.

While you think about all this, don't forget the heat from the oscillator. That heat is more than enough to run a Stirling engine of significant power all by itself.

[forest]

"The work done in this case is driving a piston in the oscillator and the gas would expand until it reaches the ambient pressure or close to it, then the gas exits through the exhaust port. That's all it takes to substantially cool the gas."


are you sure about it ? i know that gas under pressure when exit through the small orifice will cool itself, but not sure if it can at the same time do mechanical work inside the chamber, rather outside it would be maybe possibe...