Forums > General Discussion   Shooting the breeze...

Hydrogen Power from the Sun!

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Created by Adriano > 9 months ago, 12 May 2017
Adriano
11206 posts
12 May 2017 7:41AM
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The CSIRO has cracked a breakthrough technology to cheaply and reliably make hydrogen from solar power.

If used in place of natural gas and petroleum in cars and power generation, the emission is water vapour.

www.abc.net.au/news/2017-05-11/hydrogen-breakthrough-could-fuel-renewable-energy-export-boom/8518916

Buster fin
WA, 2568 posts
12 May 2017 10:02AM
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So excited to hear of this breakthrough.
However, I'm sure we'll let the world enjoy the friuts of our labour (research) for a pitance.
And thanks, forward thinking government of ours, for slashing CSIRO's budget. Kooks.

AUS1111
WA, 3617 posts
12 May 2017 11:12AM
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Adriano said..
The CSIRO has cracked a breakthrough technology to cheaply and reliably make hydrogen from solar power.

If used in place of natural gas and petroleum in cars and power generation, the emission is water vapour.

www.abc.net.au/news/2017-05-11/hydrogen-breakthrough-could-fuel-renewable-energy-export-boom/8518916


Sounds positive. Let's hope it is scalable and efficient.

The article doesn't mention any downsides, but presumably there must be some. Is it incredibly expensive?

rod_bunny
WA, 1089 posts
12 May 2017 12:58PM
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"Using the CSIRO technology, they can 'crack' the hydrogen back out and run transport vehicles on it, zero carbon."

How can it be "zero carbon" when you need power to get it to the transport vehicle? (I get the actual combustion process is)

Separating H from H20 requires power.
Combining H with N requires power.
Moving NH3 requires power.
Stripping H from NH3 requires power. (Lets assume this is done where its required, otherwise H & N need moving, which requires power)


Unless you're powering everything by solar or wind.... its not going to be "zero carbon"


Does solar/wind produce enough electricity to create enough Hydrogen plus some spare?
ie 1MW of solar/wind produces 1.4MW worth of Hydrogen (as the 1MW is already used, the .4 going to moving itself around and to the end user) (Or is it TGIF and I'm missing something?)

GreenPat
QLD, 4083 posts
12 May 2017 5:13PM
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rod_bunny said..
How can it be "zero carbon" when you need power to get it to the transport vehicle? (I get the actual combustion process is)


They wouldn't be talking about the combustion of hydrogen anyway, they would be talking about fuel cell driven vehicles.

Select to expand quote
rod_bunny said..
Unless you're powering everything by solar or wind.... its not going to be "zero carbon"


If everything that's mobile (the hydrogen vehicles and the the ships used to transport the ammonia) runs on hydrogen (fuel cells), and everything that's fixed (the facilities used to separate hydrogen from oxygen and combine it with nitrogen) run on solar/wind, then there's no carbon...


I haven't heard of any ships running on hydrogen yet, but that would be the idea. Zero carbon (or carbon neutral) existence, or we're stuffed.

Mackerel
WA, 313 posts
12 May 2017 3:32PM
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Buster fin said..
So excited to hear of this breakthrough.
However, I'm sure we'll let the world enjoy the friuts of our labour (research) for a pitance.
And thanks, forward thinking government of ours, for slashing CSIRO's budget. Kooks.


I agree 100%.
Imagine if they had a patent on wifi and Australia was making a royalty off it?
We could have made the Saudi's look poor.

Adriano
11206 posts
12 May 2017 4:36PM
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We could become a true energy superpower, but current narrow minded and parochial political thinking could well see such a breakthrough end up benefitting the rest of the world more than us.

Mr Milk
NSW, 2890 posts
12 May 2017 6:38PM
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Read what CSIRO put on their website

www.csiro.au/en/News/News-releases/2017/Membrane-for-hydrogen-fuel-cells?featured=F29EDEB1728C4A92B579C7A5DC28BAD5

it doesn't look like anybody will be running their car on ammonia any time soon. They say that their membrane is used after the ammonia has been turned back into N2 and H2 and separates the gases. They don't suggest that it is a small enough or rapid enough unit to run the H2 into a fuel cell. All they are saying is that the NH3 is a good way to transport H2 close to where it can be used

Rails
QLD, 1371 posts
12 May 2017 7:22PM
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rod_bunny said..
"Using the CSIRO technology, they can 'crack' the hydrogen back out and run transport vehicles on it, zero carbon."

How can it be "zero carbon" when you need power to get it to the transport vehicle? (I get the actual combustion process is)

Separating H from H20 requires power.
Combining H with N requires power.
Moving NH3 requires power.
Stripping H from NH3 requires power. (Lets assume this is done where its required, otherwise H & N need moving, which requires power)


Unless you're powering everything by solar or wind.... its not going to be "zero carbon"


Does solar/wind produce enough electricity to create enough Hydrogen plus some spare?
ie 1MW of solar/wind produces 1.4MW worth of Hydrogen (as the 1MW is already used, the .4 going to moving itself around and to the end user) (Or is it TGIF and I'm missing something?)



Quite right Mr bunny, the energetic return on investment for the entire operation, including mining and transporting the construction materials and infrastructure maintenance and replacement would probably be very low if not negative.

QED. we can use this technology to make ammonia as long as we have hydrocarbons to fuel it

energycentral.com/c/ec/catch-22-energy-storage

decrepit
WA, 11882 posts
12 May 2017 6:44PM
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Rails said..

>>>>



Quite right Mr bunny, the energetic return on investment for the entire operation, including mining and transporting the construction materials and infrastructure maintenance and replacement would probably be very low if not negative.

QED. we can use this technology to make ammonia as long as we have hydrocarbons to fuel it

energycentral.com/c/ec/catch-22-energy-storage


Surely that depends on the time scale. You need to do these calculations over the life of the enterprise. I'd think it'd be very positive long term.

Mr Milk
NSW, 2890 posts
12 May 2017 8:55PM
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Coal and hydrocarbons to produce the metals start it, but the CSIRO diagram uses N2 from air and H2 from water. Both processes are powered by electricity, which can be renewable.

Rails
QLD, 1371 posts
12 May 2017 10:01PM
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Mr Milk said..
Coal and hydrocarbons to produce the metals start it, but the CSIRO diagram uses N2 from air and H2 from water. Both processes are powered by electricity, which can be renewable.






Sure, but there are serous doubts about whether you can make enough electricity from capturing diffuse natural energy to power the economy since the ability to capture diffuse natural energy comes from a surplus of hydrocarbons.

www.sciencedirect.com/science/article/pii/S0301421513003856

Hydrocarbons are in fact one of the most efficient natural batteries available and yet we burn them to make batteries that last 20 years, are less efficient by many orders of magnitude, are mostly toxic, and ultimately non recyclable without an external power source.

You cannot make batteries from batteries. Elon musk and his crew are using the last of the natural energy surplus to create even more toxic waste, at a large personal profit.



And we keep on using our energetic surplus on constructing hydrocarbon dependent infrastructure as if we had an infinite supply of a fuel which we already know is finite and will run out!

Ask the NRMA how much liquid fuel Australia really has in surplus:
www.mynrma.com.au/images/About-PDF/Fuel-Security-Report-Pt2.pdf

Mr Milk
NSW, 2890 posts
12 May 2017 10:30PM
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Is this the Elon Musk business that you are so upset about?

www.smh.com.au/business/teslas-solar-roof-sets-elon-musks-grand-cleanenergy-ambitions-into-motion-20170512-gw357d.html

I'd hardly describe hydrocarbons as batteries. The term battery has come to mean a rechargeable electrical energy storage device. The way hydrocarbons get recharged is via plant growth then decomposition of fatty acids that the plants have produced in their growth. That's not a localised reversible reaction.

I'm sure that CSIRO and the like are working on ways to produce hydrocarbons from CO2 and H2 or H2O,( as a matter of fact there was a long article in New Scientist a couple of weeks ago about some chemist using organometallic catalysts to lower the activation energy for organic synthesis) but our current chemistry is only good enough to use the Faber-Bosch reaction to produce ammonia as an energy storage medium that uses covalent bonds. It's a start

dmitri
VIC, 1040 posts
12 May 2017 10:42PM
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I have read recently about Elon Musk's farms in Silicon Valley harvesting the flatulence of the unicorns.
One unicorn fart can power the whole SF area for a month.

Rails
QLD, 1371 posts
12 May 2017 10:43PM
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Mr Milk said..
Is this the Elon Musk business that you are so upset about?

www.smh.com.au/business/teslas-solar-roof-sets-elon-musks-grand-cleanenergy-ambitions-into-motion-20170512-gw357d.html

I'm sure that CSIRO and the like are working on ways to produce hydrocarbons from CO2 and H2 or H2O,( as a matter of fact there was a long article in New Scientist a couple of weeks ago about some chemist using organometallic catalysts to lower the activation energy for organic synthesis) but our current chemistry is only good enough to use the F'ing Haber-Bosch reaction to produce ammonia as an energy storage medium that uses covalent bonds. A known science since 1910 but maybe not such a good idea. pubs.acs.org/cen/coverstory/86/8633cover3box2.html



And Yehuda, he's your Okeechobee
www.theguardian.com/vital-signs/2015/jun/10/tesla-batteries-environment-lithium-elon-musk-powerwall

books.google.com.au/books?id=9AK8BwAAQBAJ&pg=PA87&lpg=PA87&dq=energetic+economics+sustainability&source=bl&ots=YAag0PGUzN&sig=HZsNGUXLrE3FifLefdxYslA8dME&hl=en&sa=X&ved=0ahUKEwjxlrT7uurTAhXDupQKHZvzBBcQ6AEISTAI#v=onepage&q=energetic%20economics%20sustainability&f=false

Macroscien
QLD, 6791 posts
15 May 2017 9:43AM
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What a nonsense even talking about hydrogen since whole world switching from combustion engines into lithium-powered electric vehicles. There are not any reasonable means to:
- power your car by hydrogen - storage, and fuel cell problems are outside our generations life time span
-you can't manufacture hydrogen in your home from solar roof panels- but you could recharge the battery in your car. What a nonsense article and wasted money again.
There is only one way to use hydrogen today - that is in commercial airships but this obvious truth somehow escapes public and expert attention.

Beaglebuddy
1595 posts
15 May 2017 3:20PM
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Hippie pipe dream SMH, about as relevant as perpetual motion device.

kato
VIC, 3347 posts
15 May 2017 6:09PM
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This is about solving problems one step at a time. This offers one solution on how to transport the stuff and recover it. It could be produced using spare green energy, storing it as hydrogen and using it latter when needed. Just like the pumping water up hill idea only better energy returns. Follow where the money is being invested........hint, its not into coal

FormulaNova
WA, 14129 posts
15 May 2017 4:41PM
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Macroscien said..
What a nonsense even talking about hydrogen since whole world switching from combustion engines into lithium-powered electric vehicles. There are not any reasonable means to:
- power your car by hydrogen - storage, and fuel cell problems are outside our generations life time span
-you can't manufacture hydrogen in your home from solar roof panels- but you could recharge the battery in your car. What a nonsense article and wasted money again.
There is only one way to use hydrogen today - that is in commercial airships but this obvious truth somehow escapes public and expert attention.


Yep, if Elon didn't think of it, its rubbish. I agree 8008%!

Macroscien
QLD, 6791 posts
15 May 2017 7:07PM
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Select to expand quote
kato said..
This is about solving problems one step at a time. This offers one solution on how to transport the stuff and recover it. It could be produced using spare green energy, storing it as hydrogen and using it latter when needed. Just like the pumping water up hill idea only better energy returns. Follow where the money is being invested........hint, its not into coal




If we read this article carefully there is nothing about discovery or innovation, but only about money.

Big money from our government coffers ( and our pockets ) being wasted on a gigantic scale.
All science behind _ chemical reaction H with ammonia and fact that hydrogen escapes from a metal container ( here read as an invention of the metal membrane) - seems to be just recollection from primary school chemistry lesson. Now smart ass extracts more than billion dollars making balloons from dumb politicians. For billion dollar investment, we could create next water pumping reservoirs - technology that works for hundred of years.
Or we could lay down next two gigawatts of solar panels ( at current price $0.5/ per watt).

Macroscien
QLD, 6791 posts
15 May 2017 8:25PM
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If somebody still doesn't know what we should do with an excess of electricity we have in this country....

Lets do what we do the best. Aluminum production - brings us much more bucks per 1KWh in return then selling subsidized hydrogen to Asia.
We are paid $1.7 USD for every 13 kwh used to produced 1 kg of aluminum. At least here we are not selling raw commodities but the highly refined product. If you could use that 1 billion of hot money that burns politician pockets - you could build another steel mill and send steel instead or iron ore and coal to China.

kato
VIC, 3347 posts
15 May 2017 9:27PM
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Nah , titanium production as we have heaps



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Forums > General Discussion   Shooting the breeze...


"Hydrogen Power from the Sun!" started by Adriano