The classical water tank and the automatic refill

[Low-Q]

Hi,

I made, well my doughter did the shot, a video of the experiment. It seams it takes shorter time to empty the bottle when it self spin. The video is not good, and I forgot to enable the audio, but I hope you can see the experiment.
http://www.youtube.com/watch?v=OzBWDWTtaP8

It shows it takes about 8 seconds to empty the bottle the first time. Last time, when it self spins, it takes 5 - 6 seconds.

Vidar

[Magluvin]

Just think, you can have the jets also aimed at paddle wheels as it spins. This will probably help the jets to have something to push on and it makes use of the water in motion after it leaves the jet. 

So the tank may spin faster and more energy had by paddle wheels hit by jets.  ;]

Mags

[Low-Q]

Just think, you can have the jets also aimed at paddle wheels as it spins. This will probably help the jets to have something to push on and it makes use of the water in motion after it leaves the jet. 

So the tank may spin faster and more energy had by paddle wheels hit by jets.  ;]

Mags

I have done alot of thinking on this one. It seems the jet is compensating for the energy it takes to rotate a centrifugal pump, by pushing the nozzles. Right after I release the nozzles, the water emties quite fast. As the water level decrease, the power in the jets gets weaker, and the rotation slows down.
If the rotation increase the water flow, the jets also push harder. That will again allow the centrifugal pump be "self powered" regardless of RPM. It seams that the jets allways feeds back the energy it needs to run the centrifugal pump.

If we put a generator inside those pipes, and load them, the waterflow will decrease, but also the decreased water flow will require less energy to flow, and less energy required from the jets to keep it running.

So regardless of the amount of energy we take out from the generators, it will still not require energy to rotate the centrifugal pump - because of the jets ()

Vidar

[Low-Q]

Look at this idea - happens to be the same thing as we discuss here (?):
http://energythic.com/view.php?node=197

[Low-Q]

I am reading about the Coriolis counter force. It perfectly counterforce the tagential force provided by the tagential bended nozzles. No energy escapes from the rotating centrifugal pump, and no energy is required to run the pump.

So what happens when we place a turbine with a generator in the pipes? Will it be able to give us the excess  energy without the need of extra energy supply?

When the water slows down because the generator is taking parts of the kinetic energy in the water flow, there will be less Coriolis counter torque, at the same time as the tagential force from the nozzles also decrease accordingly. If P-in is zero, and P-out is zero for the centrifugal pump itself, we can still harness the energy in the waterflow - because the Coriolis torque and nozzle torque allways cancel eachother out, and does not require any net energy input to work... That should not be possible!

Or have I missed something?

Vidar