Overunity (what is it?)

[TechStuf]

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.

LOL

It appears you haven't even bothered to google the definition of "sonoluminescence" or "cavitation" for that matter.  For if you did, you might have noticed that breaking the "tensile strength" of water via the highly efficient means of employing a highly efficient electric motor, produces prodigious gains!  That the effect is "nuclear" without producing negative radiation is being shown in experiments around the world!

First, the humble crustacean version:

http://www.youtube.com/watch?v=QXK2G2AzMTU

A "slightly" more complex experiment:

http://www.youtube.com/watch?v=ba-FeswwGNQ 

And another example of many easily found demonstrations:

http://www.youtube.com/watch?v=8g7Sf2OaVIk

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.

http://www.youtube.com/watch?v=yh_-DUKQ4Uw&list=PL5733824E8EC41CDA

Apparently NASA was impressed, they donated advanced bearing systems in exchange for sharing info.  They are installing these as "scale free heating" systems for major players around the world.....etc...etc...So it seems clear that Griggs is playing ball and getting rich in bypassing the consumer market and focusing on the corporate dollar.

Nope.  Nothing to see here.  NASA and major corporations love to overspend for "eye candy".  LOL

So, as one can see, cavitation holds much promise, the effect is real.  A five minute cursory google search reveals the hilarity of your assertions. 

Imagine what hours of study might reveal....

"A mind too open can't keep anything in.  A mind too closed, can't let anything in."



TS

[MileHigh]

TS:

I know what sonoluminance and cavitation are.  There is even "Certs breath mint" luminance.  Is your assertion that the drum heater is outputting more heat power than mechanical power in?  And it's due to the cavitation?  If that's it or if you mean something else please explain the process.  I know the "old" pistol shrimp clip, thanks for the new one.  That's just COE in action.  Can you see why?

I only skimmed through the synthetic radioactivity clip because it was too long.  The implosive cavitation clip was cool.  But again, what's the point?  If you look at a bubble cavitation event, do you see something special?

Apparently NASA was impressed, they donated advanced bearing systems in exchange for sharing info.  They are installing these as "scale free heating" systems for major players around the world.....etc...

Great for them.  Again, this is a mechanical direct to thermal water heater.  It may fill certain niches for fast hot water on demand where there is plenty of mechanical energy readily available.  But is it special?  You seem to think so but I can't see it.

So, as one can see, cavitation holds much promise, the effect is real.

I don't want to beat a horse to death, but I would love it if you could elaborate.   Let me give you some thoughts about cavitation and ships.  They don't like it because it damages their propellers and reduces the efficiency of the propeller.  It also produces noise so the Navy hates cavitation.  In that clip with the the rotating cylinder water heater, the cavitation inside each machined hole is of no use.  In fact, just like for a ship propeller you loose thrust and therefore power, the cavitation inside the machined holes in the rotating drum has similar negative effects.  The cavitation is causing water hammering inside each machined hole, and lots of that water hammering power is going into the rotating metal drum and traveling through it like sound waves.  That's probably fatiguing the metal and stressing the bearings.  Think of it, you look at the drum water heater and you can hear the sound of the continuous cavitation going on inside.  That's just wasted power that is being burnt off inside the drum.  In this particular case, it eventually becomes heat anyways, but it is still an unwanted "disturbance" to the smooth operation of the drum water heater.  In my opinion, it's just for show, like a prop on a movie set.

Just to add a thought.  There may also be a legitimate reason for the machined holes.  They may help to circulate the water or something.  But the cavitation events inside each machined hole don't create energy.  Since energy is the focus here, my contention is that cavitation may be interesting and may have certain niche applications, but there is nothing with respect to energy that cavitation brings to the table.

MileHigh

[MileHigh]

I went back to the Hydro Dynamics web site:

•The heart of the technology is a specialized rotor
•The rotor has dead-ended cavities
•Spinning creates low pressure at the cavity bottoms
•The low pressure zones collapse releasing shockwaves

•Cavitation is created in the cavities, not on metal surfaces. •The Cavitation is controlled, therefore there is no damage.
The SPR technology represents a new and innovative way to apply energy to liquids.

So they are saying that they want the cavitation events to produce heat.  I'll take them at their word, they have to produce heat one way or the other.

In essence, they are stating that the rotor produces more friction, requiring more torque, producing more heat.  It sounds perfectly legitimate and I could very well be dead wrong when I called the machined holes "props."  It's a trick to get the drum to produce more heat, almost like "adding sandpaper" to the drum.   So if you can produce more heat in a smaller drum size that's perfectly legitimate.  But they don't claim more heat produced than normal, which is what one would expect for a legit company.

I was erroneously under the impression that Hydro Dynamics Inc. was claiming over unity.  I got mixed up between them and that old fire station clip.  So it's all legit looking but no over unity.

MileHigh

[telecom]

Hi
in the you tube video they actually are talking about the overunity.
http://www.youtube.com/watch?v=DjGSXKSLpfY

[MileHigh]

Telecom:

Thanks I watched that clip.  So it turns out that the company Hydro Dynamics Inc. is indeed the same company that did the fire station installation.  In the clip that you linked to the visiting scientist says that they didn't do proper scientific measurements, etc, etc.  That clip also looks quite old, I am guessing at least eight years old.

I think that I figured the story out now.  Note on the current Hydro Dynamics web site they mention nothing, zero, nada about excess heat production and over unity.  Possibly somewhere down the line over the last 10 years they did legitimate scientific measurements and finally saw that there was no over unity to their satisfaction.  More importantly, they came across legitimate industrial applications for their drum-based mechanical water heater system.  Great for them, they are now selling their systems into legitimate industrial applications.

The last thing that the people at Hydro Dynamics want now is a crowd that believes that they have an over unity device hanging on and generating free energy Internet buzz over them.  That would hurt their business.

They have evolved into a real company and that's fantastic.  Any claims of over unity are now ancient history for them, they are way past that.  So the story has a happy ending.

MileHigh