Gravity Mill - any comments to this idea?

[tbird]

hi andi,

Anybody made some new calculationst? Will it be possible to compress the shuttle with the gained waterpower?
I think, this will be the sticking point. If we are not able to give enough power to the shuttle that it is able to reinflate in e.g. 10m depth, the whole overunity will be gone.

Has anybody an idea?

sorry my answer in reply 74 didn't satisfy you.  give  me some numbers and method (way you want to recompress) you want to use and i'll try to do the math for you.

tbird

[tbird]

hi
stefan,boy, your mind is really racing!
not sure if i follow your unit, but i get the impression you want to put those electronics under water again,  is that right?

in this case, do you want to make electricy or move water?  don't forget at depth your "egg" still has to be able to expand enough to be buoyant.  if you are making electricy, won't take as much as pushing water.  do you think you can make a gen that will put out as much at that speed as you would get from the water?  maybe you want to do both at the same time?

[hartiberlin]

I am just trying to correct my old posting to calculate now
with a 10 Meters deep inside the water 1 Meter high swimmer body.

Does anyone know, how to calculate the work-energy
required to compress normal air to
785,4 Liter of air with 1 bar pressure ?

How much normal air  with normal seawaterlvel pressure
do you need for this ?

Habe a look at :
http://www.peter-junglas.de/fh/vorlesungen/thermodynamik1/html/kap2-3.html

Do I just have to calculate the area under the PV diagramm ?
But with how much air do I have to start in the begining to get
785,4 Liter of air with 1 bar pressure ?

Many thanks.
Regards, Stefan.

[hartiberlin]

Well it seems the energy required to compress air in a airpump
to higher pressure with smaller volume is this:

W= - (Integral px dV ) + Pu ( V2 - V1)

With Pu being the pressure of the normail air outdoors at sealevel
and V1 being my 785,4 Liter at 1 bar pressure.

So how can I calculate the Work Energy W, if I don?t don?t know the starting
Volume V2 ?

[tbird]

hi stefan,

i could not understand anything on your last link (not my language).

the metric system is pretty cool, but.....iget lost pretty quick with this stuff.

in psi and pounds, we might be able to figure something.  like how much water.  if we know that, you can figure how much work you can do with the leftovers.  would that be good?