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Directory:Generator from Ambient Air by Kim Zorzi

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Image:Air Powered Generator 200.jpg

Kim Zorzi of Ultralight America has designed and is preparing to build a 100kw power system that he purports will run on a multicylinder air type engine. The system is different from previous ones in that it has a regenerative tank. Zorzi alleges that this will enable the system to repressurize itself. It repressurizes the high pressure feed from the low pressure side for continuous running. This would be a non-combustion system, using no input fuel to run. Theoretically, the system is driven by the temperature of the ambient air which is provided by the regenerator tank, which gets its power from the generators.

Two New Energy Congress members deem the design to be There was an error working with the wiki: Code[1]. Zorzi give a rebuttal.

There was an error working with the wiki: Code[2] based on a working device built in the 1980's by Terry Miller.


A new concept is presented to provide electrical energy from ambient heat, ideal for servicing places unaccessible by power lines

Official Website

No website yet. Available information is here or can be obtained from Zorzi directly.

Latest Developments

August 19, 2008

Kim Zorzi wrote on August 19, 2008 -

"I have built a prototype Air Powered Generator. The system has taken me nearly 4 months

to build but I am happy now that the system is running. There has been many design

changes that have come about, but one that you would be very interested in is the

one where as I have been able to make the system produce its own energy while it

is producing 40K watts of energy output.

This system stands on its own without any outside fuel sources needed to make it run.

So now as I posted before about the regeneration process, it does work and I have proved it.

At this time I am installing a control system that will police the temperature and the pressure

so as a safety precaution to keep the system from over pressurizing the storage cylinders.

A larger corporation has purchased the rights for this from me already and I will turn this

system over to them in about 2 weeks. They will unveil the power system in Florida later

this year after all paper work and patents are in place.

Attached is a photograph taken last month to show you I speak the truth. Although I don't

reveal everything in this photo, it is enough to show that it does exist.

Please do not publish this photo or send it to anyone else until the system is unveiled

later this year. I have a full pictorial history of the buildup process plus a complete set

of engineering documentation in order to reproduce more systems later. You will be

utterly amazed at some of the new technology I have been able to incorporate into this

system. It is so quiet when it runs you can cover your eyes and not hear it. The only

sound is the lashing of the gear teeth. An once the cover is installed not even that will

be heard. It can run 7 days a week, 24 hours a day, rain or shine. It does produce

enough torque to power (4) 40kwatt generators. I will be doing a torque test later in

Florida to justify the output.

Thank you everything and I will send you some video later to post along with more information."


This is not a patented technology.

How it Works

Electric Power Generation with Air Engine

Image:Zorzi Air Engine Design.jpg

The 3-D AutoCAD rendering shows a concept of design, capable of producing 100kw of electrical energy. A design only using two generators to produce 50kw is more practical for the normal household and of less cost.

Torque required to produce power from two generators is only 720 foot/lbs. Add 2 more and we go to 1440 total ft/lbs.

This air engine design can produce 1500 ft/lbs with ease. By simply regulating the pressures by computer control valves, more torque can be added to the system. Adding a regenerator to the pressure system can double the torque output as well. Something like a turbo boost. So four more generators could be added to this system.

The air circulates from the high pressure cylinder storage tanks into and thru the air engine. The last cylinder acts as a double acting type and compresses the air thru the regenerator and into the low pressure storage tanks. The power required to compress 1 cu/ft of free air is .378 hp up to 2000 psi.

In other words, the power required to recompress compared to the amount of torque received is very small.

In the Regenerator, the heat is inserted back into the system and this heat is controllable to produce more pressure. The amount of heat required is again a small amount compared to the ultimate gains. The low pressure air is ultimately fed back into the high pressure tank. A high pressure electrically operated compressor is onboard the system to insert air into the high pressure tanks if a certain amount of pressure loss is felt in the system.

The Power of Air

The power achieved from the principles of expansion over combustion is far greater. Expansion can be manipulated to produce more or less torque values and at a faster rate than its counterpart opposite. Temperature and pressure go hand in hand. Temperature increases and so does pressure. The air engine absorbs the ambient air temperature and the pressure decreases as it moves thru the system. But this pressure is still capable of producing torque down to the last cylinder. To revitalize the pressure system is to add more temperature. The air engine can be designed into a (AIP) Air Independent Propulsion System.

Electrical Power Costs

Zorzi is offering to build a 100 KW system for $ 20,000.00 or a 50 KW system for $ 14,800.00

To purchase a 50kw system of comparable value will cost upwards of 35-50 thousand dollars. Although the supplied generators are only for emergency use. Heavy duty, long term generators that can run for 10 years are a tad more expensive but much more reliable. This puts the price of power generation to about $60.00 a month for the smaller unit when operated for 10 years. Making the systems portable by mounting them on a nominal trailer can create the electricity needed anywhere, anytime.

History of Air Engines

The use of air engines in the late 18th century and into the early 19th century was a new budding technology. Most of these systems were big and bulky, but they worked and got the job done.

One of the most promising researchers and inventers of air technology - and his death was a great loss to our society - was Terry Miller of Joplin, Missouri. Terry designed a multicylinder air engine that created multiple torque loads from one shot of air. Our colleges teach that air is inefficient and is not practical. But Terry proved them all wrong.

Image:Terry Miller Air Engine Photo.jpg

Terry’s engine design is shown here.

The picture shows the engine assembly before it was mounted into an automobile over 20 years ago. This engine ran Terry’s car for several hours at speeds of 45 mph. The car somehow managed to find its way to the crusher by the action of some unscrupulous individual. This auto should have found its way into a museum instead to show how technology can be changed.

After reviewing the calculation of Terry’s design, a new plan was formed to create a home electrical generator system from this technology.

Terry’s dream was to create a ZEV (Zero Emission Vehicle) and this dream could have been realized had he lived longer.

Researching the patent base for air engine technology to run electrical generators has turned up no results. That is because most technology advances was used toward transportation purposes.

Coal Mines used air locomotives to haul coal out of the mines.

Germany used Air Locomotives to criss cross their country when the petroleum resources ran low. Alternative avenues were developed and again this technology was scrubbed from history.

Companies like H.K. Porter that produced a large number of coal air locomotives somehow misplaced the drawings concerning the air locomotives, but still retain the original drawings of the steam locomotives. One has to ask questions why this is.

David Schwarz (1852-1897)

A Croatian aviation pioneer, he constructed the first controllable dirigible airship in 1896. Even though history writes a different story, Zorzi uncovered evidence to prove David Schwarz' airship ran on a self fueling air type engine. David's death was in January of 1897, but his airship was seen in the U.S. in April 1897.

Reviewing pictures of his engine clearly shows it was not a combustion engine as stated but a multi, double cylinder aluminum engine designed to double pump expansion and compression at the same time. His engine was mounted inside the hydrogen envelope. No one in their right mind would attach a combustion engine in that location, yet historical accounts state so.

An additional comment by Zorzi - 12 March 2007

Many people will not fully understand how this system operates. But those who understand thermodynamics will grasp this concept. I have already been met with fierce opposition and I expect that. The engine runs and I have a video to prove it. The engine can create enough torque to run the generators with ease. The regeneration process is what is puzzling to most people. When temperature goes up, so does presure. The engine syphons all the temperature from the air, dropping the pressure down in each cylinder, till the last cylinder is only 40 psi pressure. So the flywheel momentum easily compresses the remaining pressure thru the regenerator tank and into the low pressure tank storage. But after the cold air enters the regenerator, it extracts the warmth from the fluid and expands back to 76 degrees and also expands its pressure too, as it refills the tank.

Some small pressure loss is realized thru the pig valves, and that is why the onboard compressor station is there. The compressor operates on 5 hp and is capable of producing 5 cu. ft per minute up to 5000 psi. The storage system contains 450 cu feet and the engine consumes 1.23 cu feet per minute. But when you inject the rejuvenated air back into the high pressure tank thru a check valve, the system will perpetuate itself. As the high pressure tank drops in pressure, the low pressure tank is gaining in pressure till the low is high, and the high is low and the check valve opens. I'm not saying it will run forever, but till the prototype is actually test run will I realize the full potential.

Built by Terry Miller in 1980's

On March 15, 2007, in response to a request to elaborate the statement above: "I have a video to prove it", Kim Zorzi wrote:

The air engine was already built by Terry Miller in Joplin, Missouri

and installed in a Chevy Chevet in the 1980's.

The performance data concerning the engine was already

outlined by Terry before he passed. This performance data

corresponds with my calculations. Terry did not get as far as

to create a re-generator for his automobile.

Terry operated his engine in a car, I will operate mine to

run (4) 27.5 kw generators as shown. In referring to a

prototype, I was referring to my operational unit that will run the

generator system.

I also retrieve all information for building the same engine

as was built by Terry. I have already purchased the components

for the engine and working with a fab shop now to constuct the

framework. Also, the tank systems are being designed and fabricated

in California by a scuba tank manufacturer.

The system should be operational by summer. My biggest expense

is the generators which will cost about $2000.00 dollars each.

In the News

Image:2009 RAT 40kW prototype 95x95.jpg
Latest / Directory:Best Exotic Clean Energy Technologies: Directory:Turbines > Directory:Thermal Electric > Directory:Ambient Air Engines > Directory:Generator from Ambient Air by Kim Zorzi > Part I: Overunity Heat Pump Turbine -- Context - Inventor, Kim Zorzi provides some background information about his Recirculating Air Turbine (RAT) system that apparently is able to harvest energy latent in air to provide 235 kilowatts of power in his present prototype that is now in production, with many improvements envisioned for next versions. (PES August 19, 2011)
Image:Recirculating Air Turbine system diagram sq 95x95.jpg
Latest / Directory:Best Exotic Clean Energy Technologies: Directory:Turbines > Directory:Thermal Electric > Directory:Ambient Air Engines > Directory:Generator from Ambient Air by Kim Zorzi > Part II: Recirculating Air Turbine Generator -- Air Engine of the Future - Texas inventor, Kim Zorzi explains how his Recirculating Air Turbine system works to harness energy latent in air by combining several expired patent technologies including supercharger compression, expanded diameter generator, water injection, axial flux generator, etc. (PES August 19, 2011)

This PESWiki page is the only coverage so far. (March 12, 2007)


See Talk:Directory:Generator from Ambient Air by Kim Zorzi

NEC Review

The following comments were made by New Energy Congress members.

Not a Feasible Design

On March 9, 2007, NEC member, Congress:Member:Robert Indech, PhD PE wrote:

As I understand it, mechanical energy is derived from the high pressure

air chambers, the output of which feeds to the low pressure chamber. So far,

so good. However, a second cylinder powered by this compressed air acts as a

regenerator which recompresses the air and feeds it into the the high

pressure chamber. Further, in the regenerator, heat is produced and inputted

back into the system to produce higher pressure.

As the inventor noted, this system design is a perpetual motion machine,

with no need to input fuel, and with a constant power output.

I firmly believe that when the detailed thermodynamics of the process is

examined that it will be found that the energy required to operate the

regenerator will exceed the mechanical power generated by the system in

total. Further, that the overall system's efficiency will actually be

substantially less than 100% as waste heat will be evolved by the mechanical

motion as well. The amount of energy required to repressurize a given

quanitity of a working fluid is critically dependent on the difference in

pressures desired, unlike the statement there: "The power required to

compress 1 cu/ft of Free air is .378 hp up to 2000 psi."

Unfortunately, the design is not a feasible free energy generator.

Also on March 9, 2007, NEC member, Congress:Advisor:Kenneth M. Rauen wrote:

I agree with Robert's quick assessment. Higher

pressure does not indicate anything regarding an

energy balance. Hydraulic pressure multipliers have

been around for decades, yet they are not a source of

net energy.

I have asked the inventor for detailed reasons why he

thinks it is a PMM2. Until I see details presented by

the inventor to address this crucial claim, I remain

unmoved, but open to hard evidence, either detailed

theoretical or experimental.

On March 10, after Kim Zorzi provided additional explanation, Congress:Advisor:Kenneth M. Rauen wrote:

My assessment remains the same. Even if Kim submits

the pages of calculations he has, I unfortunately do

not have the time to wade through them, so I await his

experimental proof.

From what is provided, I do not see any unusual

processes going on that creates an exception to the

2LT. I strongly suspect there is an error or two in

his calculations, and I am not going to spend hours

looking for them.

Rebuttal by Zorzi (March 13, 2007) : How do you know this is not a feasible system?

: You are so quick to disprove this system when you have not even understood how the system works. You have not even reviewed my data or calculations on this subject.

: Time will tell if Im right or wrong.

: This concept proves Directory:Rauen Environmental Heat Engine, that the "Proell Effect" does indeed show merit and that PMM2 does exist.

: This is not the only design that I have that proves its reality and existance. Expansion principals are not as understood as combustion. I guess that an indothermic reaction never existed and neither do thunderstorms.

: My next contact to you will probably be pictures and performance data.

Other Input
Energy Source is Solar

On March 14, 2007, Branko Jermanis (from Croatia) wrote:

On my web I have some idea, and Nikola Tesla has too. This type of machine can be possible, and source of energy is solar.


Kim Zorzi

Ultralight America

32227 Windrose Lane

Waller, TX. 77445

phone: 979-921-0001

email: []

See also

Directory:Ambient Air Engines


- Directory







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