Overunity (what is it?)

[tinman]

So it seems that we agree(mostly) that in all OU machine's there has to be an unknown energy source entering the system somewhere.
The setup in the two previous video's,couldnt be much simpler. We have an electric motor,and a drum full of hole's,that is submersed in water.It is claimed that this system is up to 170% efficient-OU?.

So insted of just dismising it as rubbish,can we find anything in the systems opperation,or any of the materials(including the water)that could produce this excess energy,under these condition's?.
Would the high speed collisions of water and air,boil water far more efficiently that fire(or any other method) can?

Maybe we have been going about this the wrong way,in reguards to building these free energy machines.Insted of building a machine,and hope that it pulls in some energy from somewhere-why not first identify what could be an energy source,then build the machine to capture it,or use it.

[Tito L. Oracion]

Hi everyday


Overunity is simply FREE ENERGY


An energy that is free cycled to itself abundantly. 

By master otitots

[Hoppy]

Maybe we have been going about this the wrong way,in reguards to building these free energy machines.Insted of building a machine,and hope that it pulls in some energy from somewhere-why not first identify what could be an energy source,then build the machine to capture it,or use it.

[tinman]

I am sensing a buzz about cavitation but I am not feeling it.  You are overcoming the tensile strength of water and you end up with what is essentially a vacuum in the water.  So there is a HUGE source of power required to create the cavitation.  Submarines worry about the noise it creates and now the modern ones all have only one large propeller.  (I once read Tom Clancy!)

MH
I dont think that is right in this case.Sure,when we place water under a vacume,the water boil's-as such. But when you remove that vacume and stick your hand in the water,it is still cold.The water in this device is that hot it turns to steam.To achieve an output of steam like seen in the video's,the water would actualy have to be under preasure-not a vacume.

There is nothing in that machine that could put the water under a vacume.Once cavitation starts,there is small explosions taking place where the cavitation bubbles are in contact with the impellor.Also note that once cavitation happens,90% of the load on the prime mover is removed.

[MileHigh]

Tinman:

I am no expert at fluid dynamics but I can tell you what I think.

For starters, those video clips are not showing slow motion, they are clips of the drum being illuminated by a stroboscope to emulate slow motion.

I think that there are two things going on inside the drum.  The first is that you are seeing cavitation bubbles in the machined holes in the spinning inner drum.  This is due to the Bernoulli principle.  Effectively it means that the water is "boiling" at room temperature because of the intense suction it is experiencing inside the machined holes.  In my personal opinion this is just eye candy.  It doesn't really do anything and the cavitation is meaningless.  The cavitation bubbles are not "explosions," they are just the suction produced overcoming the tensile strength of the water.

The second thing that is going on is that the water in the narrow gap between the inner spinning drum and the fixed outer drum "jacket" is undergoing a shearing force between the two moving surfaces.  This shearing force is resisting the rotation of the inner drum and thus resisting the rotation of the shaft.  Therefore the motor driving the drum assembly at a certain angular velocity has to output a certain amount of torque to overcome this resistance.  Just for the sale of completeness, angular velocity x torque = power, and that power has to go somewhere.  The only place for it to go is in the heating up of the water.

The shearing of the water causing friction causing heat is independent from the cavitation.  Even though the two processes are taking place right next to each other, they are not related.

So my conclusion is that for this device, the thermal power output from the heated water will be slightly less than the mechanical power supplied by the electrical motor.  In other words, nothing special.  If the people promoting this system want to prove that it is doing something special, all that they have to do is show the electrical power into the drive motor and compare it to the thermal power output by the heated water.   This would be very easy to do.

MileHigh