Can Sound Waves Boil water at overunity efficiency if the sound generated is at waters resonance?

Question

I have been watching this video on youtube (link below) and found various articles describing this device developed by a New Zealand man, Peter Davey, which boils water within around 10 seconds and is exceedingly efficient because it doesn't expend energy boiling water that evaporates over the course it is boiled. I calculated some numbers I found regarding this device. It runs on about 20 Watts, and can boil 100 grams of water in ten seconds.

Input energy:

P = W/t 20Watts = W/10

200 Joules

Output energy:

Q = mc(deltaT)

Q = (100g)(4.18)(100 C - 25C)

31350 joules

Any conclusions or ideas of what could be occuring?

What is the resonance of water?

Is this even possible?

Is equitment avaliable to test this, such as an adjustable tunning fork that goes from high to low frequencies?

Answer 1

Your numbers look good.

So, since you can't create energy, this is probably faked, like so many YouTube clips.

(link is missing)

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