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Author Topic: Tommey Reed's Liquid Piston Test Chamber.  (Read 3672 times)

TommeyReed

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Re: Tommey Reed's Liquid Piston Test Chamber.
« Reply #15 on: July 21, 2023, 10:04:21 PM »
Hi All,

This is a interesting Pelton wheel with a 1:6.66 gear ratio.

So I did a basic output this should produce using 60psi and a 0.25 jet.

I did add a lost, but 365watts seem very impressive.

https://www.youtube.com/watch?v=R4wUiVYGskc

Tom
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TommeyReed

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Re: Tommey Reed's Liquid Piston Test Chamber.
« Reply #16 on: July 23, 2023, 12:52:47 AM »
Hi All,

Ok, ready to do a test run on this pelton turbine set up.

https://www.youtube.com/watch?v=m0rvT1xd83c

Tom
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TommeyReed

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Re: Tommey Reed's Liquid Piston Test Chamber.
« Reply #17 on: July 25, 2023, 01:49:12 AM »
Hi All,

This is the pelton wheel connected to a low rpm generator test run.

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

Tom
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TommeyReed

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Re: Tommey Reed's Liquid Piston Test Chamber.
« Reply #18 on: August 06, 2023, 02:29:57 AM »
Hi All,

New update on this liquid piston combustion chamber and how it works.

https://www.youtube.com/watch?v=c-fw1_OLjGs

Tom
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Cloxxki

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Re: Tommey Reed's Liquid Piston Test Chamber.
« Reply #19 on: August 06, 2023, 12:21:16 PM »

That's a lot of liquid cylinder mass to be sent out with the combution. It better be mouted to something really solid and heavy because it will jar like the rocket is landing on the setup rather than softly setting off.
The liquid sloshing and being pressed around bends and hitting turbines will be a far cry from crank efficiencies of course. But yes, you could have a large spinning toroid accumulator to receive liquid being squirted out, catch and store its kinetic energy and mass.

Rather than a light piston that stays in the cylinder you have a heavy liquid one that needs to come in and rush out. Is this then a pump without the usual rotating parts, by incorporating it into the ICE that would often be driving it anyway?
The water does share the cylinder with the combustion so it may not be too easy to certify for drink water projects ;-) If it were hydrogen combustion I guess that would be a lot better already. With a bit of water at the top of the liquid piston touching a super hot filament, you might even get the H and O split as needed to not have to bring in external fuel, only electrical power for the heat and if needed spark. "Self fuelling water pump" has a nice ring to it ;-)
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TommeyReed

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Re: Tommey Reed's Liquid Piston Test Chamber.
« Reply #20 on: August 06, 2023, 03:17:43 PM »
Hi Cloxxki,

Great point, but this is much more powerful and would need safety precaution to the max.

The exhaust port is 0.75 diameter, not 0.5.
It can be changed to any size and this is the crazy output it could reach.

This would be the peek thrust calculation:
basic water thrust = 1.57 x psi x dia x dia
1.57 x 1000 x 0.5 x 0.5 = 392.5lb
1.57 x 1500 x 0.5 x 0.5 = 588.75lb
1.57 x 1000 x 0.75 x 0.75 = 883.125lb
1.57 x 1500 x 0.75 x 0.75 = 1,334.6875lb
1.57 x 1000 x 1 x 1 = 1,570lb
1.57 x 1500 x 1 x 1 = 2,355lb

Diesel would be too dangerous at this time.

Tom
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TommeyReed

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Re: Tommey Reed's Liquid Piston Test Chamber.
« Reply #21 on: August 06, 2023, 08:57:50 PM »
Hi All,

This is more detail update on the liquid combustion chamber ( Open Source) with mechanical release valve update.

https://www.youtube.com/watch?v=Et_0rzbreV8

Tom
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Cloxxki

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Re: Tommey Reed's Liquid Piston Test Chamber.
« Reply #22 on: August 09, 2023, 09:53:07 PM »
Quote from: TommeyReed on August 06, 2023, 03:17:43 PM
Hi Cloxxki,

Great point, but this is much more powerful and would need safety precaution to the max.

The exhaust port is 0.75 diameter, not 0.5.
It can be changed to any size and this is the crazy output it could reach.

This would be the peek thrust calculation:
basic water thrust = 1.57 x psi x dia x dia
1.57 x 1000 x 0.5 x 0.5 = 392.5lb
1.57 x 1500 x 0.5 x 0.5 = 588.75lb
1.57 x 1000 x 0.75 x 0.75 = 883.125lb
1.57 x 1500 x 0.75 x 0.75 = 1,334.6875lb
1.57 x 1000 x 1 x 1 = 1,570lb
1.57 x 1500 x 1 x 1 = 2,355lb

Diesel would be too dangerous at this time.

Tom
I'll assume those are all accurate, a lot of pressur there. It would be for a small stroke I suppose as the liquid pistion seems u unlikely to accomodate the combustion by kindly giving way at the exact rate of optimal gas expansion? The heavy piston will bare more a lot at all, and then the driving force, the combustion, is already.
Unless you intend to have a single combustion event powerful enough to totally displace all that water, through a tighter valve no less. Yeah, that might break things. Perhaps not an indoor kind of experiment. Balancing that stroke out is going to be a complication unless you can have the cylinder be horizontally and then have opposing exhausts from simulaneously firing cylinders, or a single cylinder centrally combusting with two or three liquid pistons each way.
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