Good vibrations turbo charge green hydrogen production...Engineers in Melbourne have used sound waves to boost production of green hydrogen by 14 times, through electrolysis to split water

www.rmit.edu.au ^ | 13 December 2022 | RMIT University Australia

[Red Badger]

Or ‘pink’ or ‘rainbow’...................

[Carl Vehse]

"the team managed to split the water molecules to release 14 times more hydrogen compared with standard electrolysis"

Standard electrolysis produces hydrogen at about 70 to 80 percent efficiency. So this team is claiming to produce hydrogen at 980 to 1,120 percent efficiency?!?

Next they'll be claiming they can teach pigs to sing.

[Red Badger]

You are comparing apples to watermelons................

[GaltAdonis]

Anything left in the fridge long enough will turn green -
or some other 'earth-friendly' color.

[teeman8r]

the number on green house gas is water vapor and they want to use a fuel that’s after use emissions is water vapor.

ugh.

[SaxxonWoods]

Mountain is the only band to ever run me out of a large concert hell.

The loudest I ever played on was an outdoor concert about 6 years ago. I was admiring the soundman’s power racks and he said, “You know how many watts of power they had at Woodstock?”

Me: “No”

SM: 5,500. Know how many I have here?

Me: “No”

SM: 8,500.

Later I heard from people 1/2 mile away who said it sounded great. At their house.

[Carl Vehse]

"You are comparing apples to watermelons................"

How so?

[Red Badger]

The claim is “14 times more hydrogen” not 14 times more efficient................

[Red Badger]

Saw them, too.

Only I can’t remember where................

[Don W]

Saw them in Edmonton in 2011. I was at the far end of the stadium in the nosebleed section, and was glad I brought my custom earplugs. It was LOUD! Pretty cool looking DOWN on the Gryphon (Huey H-2) helicopters as they flew through the stadium, though.

[joshua c]

you are forgetting about hamster farts

[alancarp]

Go with Nickelback... you want the hydrogen bubbles so aggravated, they’ll be driven away at higher rates.

[alancarp]

If nothing else, “high-frequency” sound waves are the easiest to produce in terms of energy requirements.

[takebackaustin]

Scientist: “The electrical output of the electrolysis with sound waves was about 14 times greater than electrolysis without them, for a given input voltage. This was equivalent to the amount of hydrogen produced,” Ehrnst said.

The non-scientist say “ the team managed to split the water molecules to release 14 times more hydrogen compared with standard electrolysis techniques”.

Not the same thing. What electrical output? Electrolysis is endergonic ( requires energy, doesn’t release it.)

Maybe she meant, “this process requires 14x higher input energy”. Which begs the question, where did the energy go?

“Show me the free hydrogen”. And by the way, net energy efficiency after separation from the oxygen.

[PA Engineer]

It has been some time since I have posted. This article irked me.

This is marketing and nothing more.

There has recently been a renewed interest in a 100 year old technology called Pulse Electrolysis to overcome the natural polarization of the electrodes with oxygen and hydrogen. This has been built into the actual DC circuits to prevent polarization circuit resistance increases in the past.

This group is trying to push a technology that is not necessary, however I figure renewable energy grants are very profitable.

Off the shelf pulse electrolysis is a proven and efficient technology to reduce electrode polarization and does not require new a "mousetrap" invention to improve production efficiencies.

Personally over 30 years ago, I used pulse technology to stop anode passivation for a different application.

[Red Badger]

FOR THOSE WHO DO NOT KNOW:

https://en.wikipedia.org/wiki/Pulse_electrolysis

[Boogieman]

“By using high-frequency vibrations to “divide and conquer” individual water molecules during electrolysis, the team managed to split the water molecules to release 14 times more hydrogen compared with standard electrolysis techniques.”

Ok, now how much power did the high-frequency emitters consume?

[ryderann]

Could they use heavy water to start?

[Red Badger]

Then your hydrogen might fuse.............

[DUMBGRUNT]

Cool stuff! And may actually be put to use.

Anything approaching cheap energy will be a money maker.

That said, Hydrogen has many rules to follow, and “Remember the Hindenberg”.