Submersible Engine Design

[exnihiloest]

As the air rises, it expands and displaces more water assuming you did not fill the cup all the way.
...

I agree that we would have to assume the change of the air volume in the calculation. But it doesn't really a matter. The volume expands because the water pressure is decreasing, but an expanding gas loses its energy. This wasted energy is the energy provided for raising up to the surface a increasing volume of water, that one corresponding to the increasing volume of air.

[tbird]

tommey,

it looks like you are changing the numbers from your website.

This will produce at a 10ft lift:(62.3*10)=623lb
pressure ((4.4 psi x 1728)/12)=633.6lb is what I get.

other numbers just seem to appear out of nowhere...

If 6.28 cu/ft in needed to turn a 2' wheel to turn 1 revolution, this will have a constant load of 62.3lb*10ft=623ft/lb.

i don't think you meant 10ft.  maybe 10 containers?

maybe a good idea to make a list of the givens you want us to use.

tom

[tbird]

exnihiloest

I agree that we would have to assume the change of the air volume in the calculation. But it doesn't really a matter. The volume expands because the water pressure is decreasing, but an expanding gas loses its energy. This wasted energy is the energy provided for raising up to the surface a increasing volume of water, that one corresponding to the increasing volume of air.

i think you are a bit confussed.  the air expanding inside the cone does make a difference, if the cone only has 1 cubic foot of air to start.  at 10 feet it will look like only 83% of the full size.  thus the lift will be less.  you would have to use the average (91.5%) over the distance to figure how much work it can do.

if the cone is in a tube and sealed so water can't pass by, then your statement....

As water is incompressible, this air volume can be made only by raising the water above, what is strictly equivalent to raise to the surface the same volume of water as the volume of air in the cone.

would have some truth to it.  you forget about the void left behind by the cone as it goes up.  the water simply fills in behind.  i will grant you that if the air is allowed to expand, that small amount of water will have to go some place.  i don't think it will make a measurable difference in the water level.

btw, the last quote, is a very poor way of explaining your point.  i'm sure not many people get it.  maybe you want to try again.

tom

[TommeyLReed]

This is a prototype of the belt drive system.

http://www.youtube.com/watch?v=oX6QLaYbN2E

This system will be running soon.

The theory to this system is, how much energy is need to produec 2.5 psi to fill the cans vs the output of work?
Can this re-compress enough air to fill each can while it moves upwards?
Could this turn into overunity?

Tom

[spinn_MP]

This is a prototype of the belt drive system.

http://www.youtube.com/watch?v=oX6QLaYbN2E

This system will be running soon.

The theory to this system is, how much energy is need to produec 2.5 psi to fill the cans vs the output of work?
Can this re-compress enough air to fill each can while it moves upwards?
Could this turn into overunity?

Tom

Hey, nice engineering! I'd like to be there with you, sacrificing myself for emptying all those cans.... Beer, I presume? No? Damn..

I believe it will work, but, sadly, it won't be 'OU'.
Far from UNITY, actually.

I'd say, some 15% efficiency? Not bad, it is quite better than, e.g., Steorn's electrical Orbo from the year ago....