Chris Hunter "Alaska Star" releases an O U PDF

[Blargus]

I'd like to know more too, I looked at my Briggs and Stratton 3.5 hp engine for this. The intake and exhaust are right next to each other, very closely sized holes. I also looked up some copper tubing and it seems to have a high enough psi rating, though I have never worked with it as refrigerant conduit. I thought it might be good to have a plug-in a/c compressor so you can test it, then try for the mechanical one. Alas, I don't think I will be trying to put this together in the near future, but I'd like to know more about it!

[RAMSET]

some testing done

Gents
There has been some "preliminary" testing done on this PDF and more in the works !

so far only a single cylinder engine has been attempted [THIS IS NOT AS PER THE PDF]

I would say the concept has legs in science however the reality of running an ICE with all its inherent losses in a system which has to "hunt" or scavenge every ounce of energy from the environment has proven to be a problem ,the biggest problem being additional losses in an ICE not specifically designed for refrigerant [leaky seals] ....[NOwhere near Looping yet]

there will be more to come on this very intriguing concept.

thx
Chet

[Grumage]

Gents
There has been some "preliminary" testing done on this PDF and more in the works !

so far only a single cylinder engine has been attempted [THIS IS NOT AS PER THE PDF]

I would say the concept has legs in science however the reality of running an ICE with all its inherent losses in a system which has to "hunt" or scavenge every ounce of energy from the environment has proven to be a problem ,the biggest problem being additional losses in an ICE not specifically designed for refrigerant [leaky seals] ....[NOwhere near Looping yet]

there will be more to come on this very intriguing concept.

thx
Chet

Dear All.

After a lengthy chat with Chet this afternoon I am allowing you access to the You tube videos I made during the last six weeks or so's replication attempt.

My Son and I have drawn the following conclusions.

A standard four stroke car engine is totally unsuitable for a successful end use product. Why ?? Because the valve stem seals are the wrong way round to seal the refrigerant. Because you only need a pressure and then an exhaust once per revolution. Because standard piston rings are leaky and should be replaced by suitable Pneumatic / Hydraulic Lip seals to prevent the refrigerant being lost down past the piston.

An off the shelf Two stroke engine also has issues !! Refrigerant get's transferred via, you guessed, the transfer ports !! This causes piston locking also detrimental to running.

Near the end of our tests we were using Propane as our refrigerant. At 20 C / 70 F it boils at a pressure of around 120 PSI. No where near enough pressure to get more than a few 100 RPM !! Now if the cylinder was heated that pressure would naturally increase creating more RPM and more torque at the crankshaft. And also require less liquid refrigerant too.

Our conclusion.

This is undoubtedly an amazing idea. And with, let's say, a suitably modified liquid heated four cylinder block and a specially made ( custom ) cylinder head fitted with electric inlet and exhaust valves, i.e. solenoid type, would probably work exceptionally well.

The key is...... Delta T, the greater the temperature differential the more powerful the engine would become.

I have posted this info for you to go ahead with a replication. I found the whole experience interesting and educational. I also hope that my findings will stop you making the mistakes I made so you can move onto the next phase change !! Pardon the pun !!

Cheers Grum.

https://www.youtube.com/watch?v=a72Sg8pBQO4

https://www.youtube.com/watch?v=gneY8q6oUpY

https://www.youtube.com/watch?v=VIGn14lxOfA

https://www.youtube.com/watch?v=WjA9kRlRs88

https://www.youtube.com/watch?v=5bTiz7e2t2w

[Michael John Nunnerley]

Graham, 100% with you, as if you didn't know

regards

Mike

[redeagle]

Thanks for the update and videos. I did notice one thing that I wanted to check on about your setup Grum. Was that a two stroke motor? or a modded 4 stroke perhaps It looks like you were activating the solenoid for every rotation instead of every other? From what I gather from the PDF the solenoid should be open for half of the expansion stroke.

Don't get discouraged Thomas Edison made 99 light bulbs that didn't work. Any progress is good progress. especially when it comes to conservation of or reclaiming wasted energy.

[Grumage]

Thanks for the update and videos. I did notice one thing that I wanted to check on about your setup Grum. Was that a two stroke motor? or a modded 4 stroke perhaps It looks like you were activating the solenoid for every rotation instead of every other? From what I gather from the PDF the solenoid should be open for half of the expansion stroke.

Don't get discouraged Thomas Edison made 99 light bulbs that didn't work. Any progress is good progress. especially when it comes to conservation of or reclaiming wasted energy.

Dear redeagle.

We started out using a small scrap 2 stroke engine who's ignition coil had " gone south ". We had pressure tested the system up to 150 PSI on a number of occasions, no leaks!! But the first vacuum attempt collapsed the crank seal. Upon examination we discovered the whole engine was so badly worn out it was of no use to our endeavours.

Despite the grass here at home being several inches high we descended upon our very nearly new Flymo lawnmower !! The engine was in really good condition, a Techumseh 98 cc 2 stroke.

You are quite correct as to the admission. We discovered quickly that a longer pulse was required to get a full crank revolution. However it is the cylinders temperature that is critical. 1cc of liquid Propane, will at 20 deg C create approximately 250 cc's of gas. The higher the cylinder temperature the greater the volume !!

My son and I have decided to shelve this project until a suitable 4 cylinder engine can be obtained to further our investigations.

Cheers Grum.

[Ufopolitics]

Air Compressor Head...

Hello Guys, Hello Chet, Hello Grumage and great work!...please do not give up!

I agree with you Grum that for such simple system we do not need that much complicated existing designs.

Used Gas engines are known for carbon deposits on valve seals, big time wearing out on steel and seals...plus many other "goodies" that are killers for this type of Closed, non explosive System...and unless spending a fortune on machine shop and rebuilding expenses...plus customized seals, etc,etc on the whole thing...still we are left with a system that has too many holes and tunnels, sensors, etc, not necessary at all...

Have You guys considered using a good Air Compressor Head...One or Two Cylinders as the Main Engine to start experimenting with?

Even a used one will not have any of the bad attributes of gas burners...and its valves seats and piston seals are designed "air tight" plus great psi capacity.

Talking about a nice Curtis, Sailor Beam...or any Industrial type heavy duty air compressor head that have parts for rebuilding it available...All Seals for an air compressor are "air proof" tight...while all gas engines seals are not that tight proof.

Air compressors come with a nice flywheel...and I believe it is just like a "simplified" Two Stroke gas engine...suction and compression stage. Just to adapt a tubing from the Air Filter port (suction side), and adapt a threaded hole for the injection valve(s) of cold fluid...or using the pressure shut off valve fitting on the head for injection purpose.

Related to the Delta Temperature issues...I have thought of a nice thick gauge coil, (as factory spec's values) wrapped around head heat sink fins (adapted-cut and smoothness for that purpose of course)...and connected to a very economic induction cook digital controller...just a few pulses will get that aluminum or steel head flaming red...

On another comment...since this type of closed loop engine works at such low psi...I will consider using the shortest and thinner as possible connection lines, hoses and tubing for less storage capacity as faster transfer of gas or liquid without loosing pressure on higher volume transferring channels.

Hope this post is of some help for all replicating this great idea.


Regards to all


Ufopolitics

[Michael John Nunnerley]

Hi UFO

Love your induction coil idea, that is one great idea as long as the head is not aluminium.

Might not be so good using LPG though

regards

Mike

[Ufopolitics]

Hi UFO

Love your induction coil idea, that is one great idea as long as the head is not aluminium.

Might not be so good using LPG though

regards

Mike

Hello Michael ,

Thanks, the coil could be wound on top of an iron sleeve shield that wraps around the head...

I rather use Refrigerant rather than the LPG...and will love to test C-134 instead of Freon R-11 or 22...since it is environmentally friendly.

What do you think about the Compressor Head idea?

Only draw back I see (maybe there are more) is the very High Pressure on strokes...but that could be used on our favor if utilized to push second cylinder down on suction stroke through Exhaust>>Intake and Exhaust>>Intake Pipes from one cylinder to the other ...on a one cylinder it could go to a pressure tank and valve regulated towards Intake.

What I think primarily to be achieved on this set up...is to be able to mechanically "self propel" the system first (through a gauged pressure reservoir and regulated by a "throttle valve") and it could be tested with just compressed air...til we get the proper balanced speed and operating temperature...then start the Refrigerant and injection process after vacuum system...of course, using an electric motor to start building the pressure up.
For example: Air Compressor/Tank reaches Max Pressure to test system, electric motor turns off by properly regulated shut off valve...and we have already a high pressure tubing from tank, installed with an inline valve to the Intake Port (where air filter housing installs)...if we start opening that valve slowly...we should be able to make compressor to turn...the key here is that pressure could not be top off to max otherwise piston will be harder to turn/exhaust pressure back to tank through a One Way Valve.

Once that we get this achieved...playing with the cooling and heating, injection and timing regulation is an easier job...

What do you think Michael?


Regards


Ufopolitics

[redeagle]

I like the idea of using a multi-piston compressor especially if the design is modular to add/remove pistons and adjust piston timing. But again unless the unit is from the scrap heap it can be cost prohibitive. I believe that the most important point of the document is that common house hold items like unused engines and perhaps compressors can be put to good use with only minor low cost modifications.

That said, I believe that the converted compressor would have some merit even though it needs more tlc for valve timing and additional valves. Don't forget that this is a low RPM device. The more pistons you have pistons you have driving in a harmonic wave the slower we can drive the system without stalling it. Meaning that there is greater opportunity to extract ambient energy that enters the system though conduction. Which also means larger requirements for cooling on the flip side.

Pre build thoughts about the cooling knowing that refrigerants are easier to compress when the pressure side is colder. Meaning that the engine is more likely to be able to pressurize it's own refrigerant. The question is what is cheaper mechanically Running a water bath chiller for the condenser or pressurizing against ambient temperature gas. I do not have that answer, but hope to get it soon.

My initial test platform is a push mower that is headed to the junk yard other wise. not sure why it isn't running but will find out soon enough. Planned load for the motor if it runs with no load is an alternator and a compressor. Depending on the motor. Timing may be done with a reed switch and a magnet on the cam shaft or externally by pullies and mechanical contact. going to try the magnet first. since the engine is headed to the scrap yard anyway the governor can be removed to install wiring for the reed switch internally. Will take pics and maybe some video when I get to test it.

Keep calm and test on.

[Wallywonka]

Grab a lawnmower and put it inside a freezer and shut the petrol off...

....wait a minute it keeps on running...

Hmmmmm

[RAMSET]

Wally Don't let your wife catch you playin with her appliances

All
after speaking with Rob Mason I will share this here.

One very big moment working with this PDF happened under the
guidance of Rob Mason [ member Evolvingape]

He Observed that The exhaust from an ICE or better yet a diesel ICE
would be a marvelous source of Heat to increase the Delta T in this system...

to put it in his words[if I remember correctly]

The total input to the prime mover will be the fuel to the ICE , from that point on all energy produced in the system , {"system" Here being a combination of the "TWO" techs, the ICE and Refrigeration engine into one symbiotic mechanical engine]

will be put to work first in the ICE stage and next as a heat source [exhaust and water jacket] for the Refrigeration part of the engine , making _THIS_ ICE drastically more efficient than anything the world has seen.[of course the fridge part of the motor will also be harvesting some energy from the local environment in a well engineered system]


so you can forget your Static "Solar" or your "Water" heat sink models [lakes and such]

we can take those static models and make them Mobile with the normally wasted heat from an ICE engine...

Brilliant to say the least
Thank you Rob Mason....
and of course Chris Hunter for the original PDF

Chet

[Michael John Nunnerley]

Now that is the way to go Chet and not rocket science A standard engine now becomes 60% or so efficient using the same fuel

regards

Mike

[redeagle]

Like! Sounds like something big three is sitting on. The live adjustable cam shaft was patented by a University near me. They were offered a sizable some by a large auto maker to prevent another from getting it.

Any ideas on applying this concept to an existing small engine/car. I'm thinking perhaps a way to get electrical production for producing onboard hydrogen? Further increasing fuel efficiency.

[RAMSET]

Tommey Reed's version

Tommey Reed is playing with this here

The Propane Air Engine Project

@Redeagle
Quote
Any ideas on applying this concept to an existing small engine/car
-----------------------------------------------

Red its all about the ideas and the sharing ,1st thing is Get it running
then work from there on "How to", No One has gotten to a Running self looping system yet and shown it publicly [nor privately in my group of associates]

but that's in the works......... and will be shared here and elsewhere.
sink or swim.

thx
Chet