Cavitation. The key to overunity?

[madddann]

@Koen1
THX alot for all the info!
Now i don't think that neither of this guys (Keely, Peter Davies, Thrapp) is a scam. They all knew exactly what were doing and the "dale pond" video does really explain it all.

"So why then not just spread the word,
why then would they focus so much on getting your money?"

-'cause the world today id fu***d up for good and you can't even shit without money

"Anyway, it's the very same video that we saw back then, and it still looks like
he's pulling some coil-like contraption out of the metal sphere."

-i don't think is a coil in there (maybe i'm wrong), i don't think there is an electric device in it at all - well maybe there is a crystal at the end of the coil - not sure yet...

"And that makes me question whether it really is a form of sonically induced
cavitation, as I still don't see how you make sound with a coil."

-speakers makes sound with a coil... but again, i don't see a coil there

"Besides that, it seems to me that the most logical spot for cavitation to occur
in a spherical container, would be in the center of the sphere, where all
pressure waves can collide into a focussed point. It seems to me that
placing a rod with a contraption on it in the center of the sphere would
very much interfere with that process because it occupies that cavitation
spot."

-look at the video again and pay attention at what he says - he claims that the water heats up perfectly evenly (i think almost evenly), and i think he is telling the true. So instead of cavitation occuring in the center, it occurs all over inside the sphere evenly - well maybe the cavitation is not occuring yet at all, 'cause the power is too low, but is sufficent to make an effect similar to that inside microwave oven, just more powerfull.

...i think that the world today is enough advanced and informated that we should be able to figure out how this works - so just share the info and knowledge... the creativity is your limit 

...again... anyone that wants to discuss the technical stuff and ideas about that device is welcome in the thread that i created for this purpose and look at the info provided here: http://www.overunity.com/index.php?topic=6208.new#new

Dann

[Koen1]

Koen  O.K  Thanks for your responce

Very welcome.

My bad .

Nah dude, nobody's bad.
You're just trying like the rest of us to find a real OU device.
Can't blame you for getting excited about things.

I should have posted links on the Peter Davies water heater [looks like Witts turned inside out]
I will post a link tonight after work

Ok so I looked him up, and now I remember! It's the old guy with his hemispherical
device that he sticks in a glss of water to make it boil almost instantly...
Yeah, I looked up his device quite some time ago as well, seems to be along the same
lines as the Thrapp thing, but only half a sphere and quite a bit smaller too.
I didn't stick with it at the time because there was a huge lot of overenthousiastic
people and only very few who really wanted to get to the bottom of it...
...but scanning through the latest pages of the Davy Heater thread on this forum,
I did find a possible explanation which I recall already came up back then too,
but was generally dismissed by most fans in favour of some weird pseudo-keely
resonance theory.

Anyway, this post http://www.overunity.com/index.php?topic=4083.msg135587#msg135587
gets close to the most plausible resonance related explanation I have heard.
Allow me to quote that post:

Davey found an effect called magnetostriction : http://hyperphysics.phy-astr.gsu.edu/hbase/solids/magstrict.html

That joined with cavitation explain his device very well. The external shell is resonant cavity and probably contains very small holes. The internal bell is made from highly magnetostriction material. Both are probably somehow insulated to limit current but still allow magnetostriction.The effect is and contraction/expansion process of inner bell walls at 100 or 120 hz frequency which in correct shape should produce circulation of water between bells at around 3600 rpm, very similar to commerial cavitation heaters driven by electric motor.

So this implies that indeed a physical oscillation may be induced in the medium between the "bells" (hemipheres),
by utilising the magnetostrictive "reaction" of the "bells" metal to the applied magnetic field fluctuations,
in combination with the proper dimensions of the "bells" (and their resonant coupling with the magnetic field
oscillations). The "interference" pattern of these two "bells", each "resonating" at their own frequency,
might indeed produce magnetistrictive "expansion" and "contraction" of the "bells", which could indeed
produce pressure waves in the medium (the water) of specific frequency. And that is sound.
And if properly tuned, this could indeed generate cavitation in the center of the (hemi)sphere.

Wowsers.

Yeah, that might even work!

Ok, now that is interesting LOL because here we finally have the coil-like sonic inducer
which I asked you to explain.
Here's the weird looking speaker I was giving you crap about. Sorry about that.
It seems you may be correct that there is indeed sonocavitation going on...   

At least, in the Davy version I can imagine how that might indeed be done.
Takes a lot of finetuning incl getting the physical dimensions of the components
just right and tuned to the input signal and both should be tuned to the proper
frequency to cause actual cavitation... Seems quite complicated to work out
from scratch...
Let's see if we can get a full description on how to build one, including the exact
dimensions and input signal etc, then that might help.

Anyway, looking at it, it might be that Thrapp simply built a variation of it,
one that uses a spherical vessel instead of the hemispherical version.
I suppose the cavitation does not need to occur in the center of the thing,
and it is possible that the spherical shape is intended to obscure the actual
innards of the device. Imagine that he's actually got a hemispherical
Davy heater inside the sphere somewhere, and he could just as well have
stuck it in a bucket but that wouldn't look nearly as impressive.

Ok, so, hehe now we do have a possible method for generating sonocavitation
without using an actual speaker or direct sonic input, but rather by using
electromagnetics to produce sonic oscillations in the water.

That said, I am still not convinced it is really OU.
(LOL yeah I know, what an annoying bastard, still not convinced. )

It is a known fact that properly attuned heating devices can heat water
with almost 100% efficiency, and that is a huge lot better than
any "standard" water boiler that uses an "inductive" heating element.
And I will eagerly concede that the Davy heater would appear to be
a very good example of such a highly efficient heater, which can boil
water at almost 100% efficiency.
So there's no question in my mind that the Davy boiler is a lot better than
the average electric kettle, and better than most inductive heating elements.
For that alone the Davy heater and similar efficient heaters should become
the next generation of energy efficient boilers, and their inventors should
get the credit for that. Absolutely.

Whether they can produce OU under certain circumstances, that I am not
so sure about. If they can produce sonoluminescence they might be used
as sonofusion devices, and in that case they might offer a good method
for miniature fusion experiments (if one can obtain water with a lot of
deuterium and tritium in it). And that is very interesting stuff. Still not
technically OU, but at least a lot of energy output.

[sparks]

    Say the cavitation occurs near one surface.  The fluid boils into the cavity near surface a and extracts heat of vaporization from the surrounding fluid and surface a and the bulk fluid flow is such that the cavitation bubble collapses nearer to the outlet of the fluid tank.  Or carried off all together.  The laws of thermodynamics now kick in and the heat spreads out but results in a heating of the field closer to point b.  Now we got a heat pump going transporting heat from the region of surface a to the bulk fluid.   As long as surface a is cooler than the bulk fluid things heat up due to the heat of vaporization inside the bubble transporting it from the ambient field to the bulk fluid temperature?  Negative entrophy of sorts.

[CrazyFox]

@Sparks

Plasma balls are common in the mountains of Washington State near where I live. Around Mt. Adams they are almost dayley events. Locals call them UFO related. Perhaps, a ball plasma may be tapped for energy? Then again, plasma in an engine that I just discribed might reveal itself from light leaking into our dimension from an adjasent one? Vacuum/Vacuum event in the time continuum is a subject best left to fiction writers for the present. Don't ever let the "Pistol Shrimp" become a smoking gun! Cavitation implosion deserves closer and, most of all, applied research. The Pistol Shrimp is doing what comes natural and humans might take a hint from it.

[AbbaRue]

A friend of mine bought a room humidifier that used an Ultrasonic Transducer to make water vapour.
When this thing was running it would put out as much water vapour as an electric kettle at full boil.
And it use less then 15 watts to do it. Of course the vapour was room temperature.
Now if we had 2 of these Transducers placed in parallel to one another and
maybe running at a slightly different frequency it might set up a cavitation.
Now were to get the Transducers?

Does this look like what the "Thrapp OU cavitation heater" was using in the center.
http://cgi.ebay.ca/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=200257627403