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[SD/LP] Navy Creates Fuel From Seawater (VIDEO) - Page 2

post #11 of 47
Quote:
Originally Posted by Vagrant Storm View Post

Though I can't see why a land based nuclear plant couldn't be set up to make the fuel as well without the all the cons of solar power. Sure, we will put more energy in then we get out, but it would not require all of our vehicles to be made electric so we could make use of the nuclear plant more directly.

How is that more directly? An ev using electricity generated from a nuclear plant would be more direct then a nuclear plant generating electricity to make fuel that would then be burned. Plus evs use energy recovery further improving efficiency.
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post #12 of 47
Quote:
Originally Posted by Vagrant Storm View Post

Though I can't see why a land based nuclear plant couldn't be set up to make the fuel as well without the all the cons of solar power. Sure, we will put more energy in then we get out, but it would not require all of our vehicles to be made electric so we could make use of the nuclear plant more directly.

It depends on efficiency and costs. Increasing the power output of a nuclear plant does increase waste....

A recent study found that excess energy from renewables should even just be dumped since storage/conversion would cost too much.
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post #13 of 47
Quote:
Originally Posted by scutzi128 View Post

Quote:
Originally Posted by Vagrant Storm View Post

Though I can't see why a land based nuclear plant couldn't be set up to make the fuel as well without the all the cons of solar power. Sure, we will put more energy in then we get out, but it would not require all of our vehicles to be made electric so we could make use of the nuclear plant more directly.

How is that more directly? An ev using electricity generated from a nuclear plant would be more direct then a nuclear plant generating electricity to make fuel that would then be burned. Plus evs use energy recovery further improving efficiency.

I said that converting vehicles to electric would use the power more directly
Quote:
Originally Posted by DuckieHo View Post

Quote:
Originally Posted by Vagrant Storm View Post

Though I can't see why a land based nuclear plant couldn't be set up to make the fuel as well without the all the cons of solar power. Sure, we will put more energy in then we get out, but it would not require all of our vehicles to be made electric so we could make use of the nuclear plant more directly.

It depends on efficiency and costs. Increasing the power output of a nuclear plant does increase waste....

A recent study found that excess energy from renewables should even just be dumped since storage/conversion would cost too much.

but that cost should be compared to the cost of converting everything that uses fossil fuels over to a different fuel source...and making the infrastructure to provide the new fuel source. If we can find an in-efficient way to keep things running as they are it would still be cheaper. Thinking long run...I'd rather see the money get spent for the conversion, but I don't see how any one could realistically expect that to happen.
Edited by Vagrant Storm - 4/9/14 at 10:02am
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post #14 of 47
Quote:
Originally Posted by scutzi128 View Post

How is that more directly? An ev using electricity generated from a nuclear plant would be more direct then a nuclear plant generating electricity to make fuel that would then be burned. Plus evs use energy recovery further improving efficiency.

Hydrogen doesn't dissipate if stored in a tank, while a battery will discharge if left unused. Fuel Cells have the potential to be much lighter than batteries, and have a much greater power density. Until we have durable fuel cell stacks that can operate in electrolysis mode simultaneously, you wont be able to fuel up directly with water in a vehicle. On a ship it could be feasible given the lack of size constraints.
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post #15 of 47
Quote:
Originally Posted by ryboto View Post

Quote:
Originally Posted by scutzi128 View Post

How is that more directly? An ev using electricity generated from a nuclear plant would be more direct then a nuclear plant generating electricity to make fuel that would then be burned. Plus evs use energy recovery further improving efficiency.

Hydrogen doesn't dissipate if stored in a tank, while a battery will discharge if left unused. Fuel Cells have the potential to be much lighter than batteries, and have a much greater power density. Until we have durable fuel cell stacks that can operate in electrolysis mode simultaneously, you wont be able to fuel up directly with water in a vehicle. On a ship it could be feasible given the lack of size constraints.

Well, actually that's been a hard part of hydrogen fuel...it can seep out of an air tight tank because the molecules are so small. It's more a of a long term storage problem though.
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post #16 of 47
Quote:
Originally Posted by Vagrant Storm View Post

Well, actually that's been a hard part of hydrogen fuel...it can seep out of an air tight tank because the molecules are so small. It's more a of a long term storage problem though.

if your storage vessel is properly designed, it wont leak. Where I used to work we stored hydrogen between 6-12,000 psi.
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post #17 of 47
Quote:
Originally Posted by Vagrant Storm View Post

If they are making jet fuel for $3 - $6 a gallon...they could probably make diesel fuel cheaper then what we pay at the pump in most places of the world. Jet fuel is basically super high grade diesel fuel, correct? Or is it more akin to Kerosine?

Think of Kerosine... but then take it ten steps higher in quality. Jet fuel on Carriers is made in house and extremely controlled.

They even swirl test it biggrin.gif



This is awesome though.
The Sea gives water, air, and now fuel!
Just need a human food source that is sustainable and a ship will only need to dock for maintenance.
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post #18 of 47
So they effectively take H20 and strip the H2 from it and create CO2? rolleyes.gif

Revolutionary.
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post #19 of 47
Quote:
Originally Posted by Vagrant Storm View Post



Though I can't see why a land based nuclear plant couldn't be set up to make the fuel as well without the all the cons of solar power. Sure, we will put more energy in then we get out, but it would not require all of our vehicles to be made electric so we could make use of the nuclear plant more directly.

Let me tackle this nuclear myth right now.

Nuclear power is very expensive. There is currently no solution to nuclear waste. And if you deal with the whole process, it cost more to deal with nuclear then it produces.

Nuclear power requires capital to build, capital to maintain, and capital to decommission.

Lets look at the numbers.

To actually run a current nuclear power plant is between 9 and 14 cents per kilowatt. The market value for that energy is about 6 cents per kilowatt.

So the government has to had over a subsidy every where year to cover the different between the cost to run the reactor and the market value. Which means, all total, the government hands out about 58 billion dollars to nuclear companies just to keep them running.

But the problem with nuclear does not stop there.

After the plant runs its life, the company that ran it take the profits to other holdings and declares bankruptcy. The federal government then must come in and decommission the plant. If you force the nuclear companies to actually do this, the cost per kilowatt would go up to almost 1.30 cents a kilowatt, remember the market value is 6 cents per kilowatt.

When you add all the little things that is either funded by or taken care of by the tax paper, the total cost of nuclear power is 30 cents to 4 dollars a kilowatt. Depending on the company.

And that does not even address the biggest problem with nuclear power.

The waste that is produce by the nuclear power is just being stored because the cost of dealing with it would make even the federal government cringe. Which is why we started to store it in a mountain then dealing with it. In places like the uk, where they process the waste, the cost for nuclear is increased by 4 to 7 cents a kilowatt.

Now I don't know your "cons" of solar panels, but I have yet to see one produce a nuclear meltdown or leave waste in the ground for thousands of year.


http://www.ucsusa.org/assets/documents/nuclear_power/nuclear_subsidies_report.pdf
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post #20 of 47
The fuel isn't free but it is a method of taking the surplus of energy available aboard carriers and using that it eliminate a logistical issue. Carbon can be taken out of the air, hydrogen out of the water and Yay kerosine
This is probably a logistical officer's wet dream
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