The Propane Air Engine Project

[Tommey Reed]

Hi Evolvingape,


I don't think those would work due to constant input of pressure they need.

This is another test I did:

https://www.youtube.com/watch?v=9UZTGq1I8tE

Looking into different motor designs to get the most efficient output.

Tom

[evolvingape]

Hi Tom,

Yesterday's paper. Peugeot Citroen think it works, production starting.

http://www.dailymail.co.uk/sciencetech/article-2679990/Car-runs-air-New-hybrid-greener-electric-rivals.html

So, no need for batteries as energy is stored as gas pressure.

Now add ORC sleeve, recover waste heat energy and convert it into?, apply that energy how?

Static or Dynamic seals preferable on a pressure wall with atmospheric / vacuum differential?

[Centraflow]

Hi Tom,

Yesterday's paper. Peugeot Citroen think it works, production starting.

http://www.dailymail.co.uk/sciencetech/article-2679990/Car-runs-air-New-hybrid-greener-electric-rivals.html

So, no need for batteries as energy is stored as gas pressure.

Now add ORC sleeve, recover waste heat energy and convert it into?, apply that energy how?

Static or Dynamic seals preferable on a pressure wall with atmospheric / vacuum differential?

Seem's the frogies have done it again, they were way ahead before with selectronic gear changing, that's going to be quite a knock on the battery industry

At 2Lt per 100km that's about a 50% + saving on a 1.2Lr engine (normally 4-4.5Lt).

I think ORC would be simpler for the same efficiency

I wonder how they  combine the two engines running together?

thanks for posting

regards

Mike

[Tommey Reed]

Hi All,

OK this is the best way to convert linear into direct rotational energy.

https://www.youtube.com/watch?v=TNm6IcQdK-8

Tom

[evolvingape]

Hey Mike,

Integration is the key here.

We have traditional fossil fuel ICE's, ORC systems, hybrid electric, and air / hydraulic power as well to choose from.

http://www.2carpros.com/articles/hybrid-motor-and-transmission-information

An ORC system recovering heat from the ICE system, and heat from the compressed air system is going to be very efficient.

What is the best output form of energy from the ORC system to choose ?

Convert potential energy to rotary moment or linear motion or both ?

How many feet does a 60Hz alternator rotor of 6" diameter, travel in 1 second ?

[Tommey Reed]

Hi All,

This is a test of the ratchet engine producing about 50 rpm,s with a single piston stroke at 100 psi.

https://www.youtube.com/watch?v=DcKkmUv8ZQE

Tom

[Tommey Reed]

Hi All,

This is a electrical load test from a single piston stoke at 110 psi.

Enjoy the show .

https://www.youtube.com/watch?v=MHeI5we9d6M


Tom

[Matt Watts]

That is really pretty cool Tommey.  So at 110 PSI and about how much volume in that piston?

I'm guessing the output watts are still a bit lower than would be needed to keep the air compressor tank replenished.  Still, you are using that compressed air quite efficiently, probably more so than the compressor uses electrical power to pump up the tank.

[Tommey Reed]

Hi Matt,

The piston ram has a 2.25 diameter piston and a 16" stroke that is about 63.62cu/in.

If I ran this at 60 times back and forth per minute, 30 out and 30 in it would use a total of (63.62*60)/1728=2.20cu/ft@110 psi.

The piston area is 3.98in/sq, so 110 psi is putting 437in/lb on the piston ram  .

Tom.

[Matt Watts]

Please do not try this unless you are certain of yourself !!!

What I think would be neat to see is a tiny drop of water that is still liquid and has been raised to 700 degrees, injected into that ram.  I have a hunch the force would be tremendous.  How on earth you could get a small spot of water to that temperature though without it forcing its way into steam seems like an awfully good trick, but supposedly some have actually done it--Dennis Lee comes to mind.

http://www.youtube.com/watch?v=Yt_hqmgwMBU

[Tommey Reed]

Hi Matt,

I would not sell my house on these clowns, even Dennis Lee.

The water idea would depend on how much energy is needed to freeze it again.

Tom

[Tommey Reed]

Hi All,

I would like to show some data on how much energy this system can produce with little if any lost.

My piston area is 3.98in/sq
My power stroke is 16"
My total displacement is (3.98"*16")= 63.68cu/in

At 120 psi the piston produce (120*3.98)=477.6 in/lb
At 16" power stroke the total work done is (16"/12")=1.33  (477.7*1.33)=635.21 foot pound of mechanical work.

1 hp = 33,000 foot pounds per/minute or 550ft/lb/sec

This is how many power stroke needed to produce just 1 hp (746w) per/minute from this ratchet engine design.

33,000/635.21=51.95 power strokes are needed per/minute
Total CFM's@120psi is ((63,68*51.95)/1728)=1.9 CfM's

This is how much liquid propane is needed to produce 1 HP

Propane pressure 120 psi.
1 gram of propane expands to 270grams or 9.52cu/in

This is where the math comes in, I want the liquid to expand to a max of 60 psi and then release from the piston stroke.
Piston area is 63.68, at half the power stoke it is 31.84cu/in this will allow the liquid propane to expand the total length and still have 60 psi in the system.

Total gram of liquid propane needed per power stroke is: 31.84/9.52=3.34 grams of propane
Total output of mechanical work is half of 635.21/2=317.61ft/lb

Amount of liquid propane needed to produce 1 hp is:
(33,000/317.61)=103.90  3.34g*103.90=347.03grams per minute of liquid propane.

347.03 grams=12.241oz.

I would like your opinion?

Tom

[Tommey Reed]

Hi All,

This is the most important part in the linear ratchet engine the valve design.

I'm making this a good design to last longer then PVC, even the valve piston are aluminum machine to my specs.

It will take time to finished, but I'm about half way done.

Enjoy the Show.

https://www.youtube.com/watch?v=Dl5jdNLbp9A

Tom

[Matt Watts]

I feel bad for Gary Hendershot if he is missing this.  I know why now he got so excited whenever Tommey Reed was the featured presenter on the Smart Scarecrow Show.

Great work.  Can hardly wait to see this gizmo in action.

[Tommey Reed]

Hi All,

Not finish with the valve yet, but it's almost done.

I have work to do tomorrow, and maybe in the after noon I can finish up on the valve.

https://www.youtube.com/watch?v=q7gusj6HULI

Tom.

[Tommey Reed]

Hi All,

I got finished my choo choo piston valve .

Enjoy the video.

https://www.youtube.com/watch?v=u6XywCf5C7I

Tom

[Tommey Reed]

Hi All,

I finished the valve and test run my choo choo ratchet engine.

Enjoy the show Afro.

https://www.youtube.com/watch?v=GNGdoyvIf1w

Tom

[Matt Watts]

Very nice Tom.  Looks like it works real smooth and precise.  I think you got a winner there for turning pressure into rotational motion.

[Centraflow]

Very nice Tom, from my refuge here in France, it's raining cats and dogs here and 12c, not what I'm normally used to

back home in around 8 days

regards

Mike

[Tommey Reed]

Hi All,

Did some testing today with different compressors, and nothing could produce the 2.2 CFM's need to keep the ratchet engine going.

I do have new question on how much energy is needed to convert propane gas back to liquid, It's going to take a lot of energy  .

This is the a run test I did today.

https://www.youtube.com/watch?v=9L01tLW2_3k&hd=1

Tom