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[SD/LP] Navy Creates Fuel From Seawater (VIDEO) - Page 5

post #41 of 47
Very cool but lets be honest,we will never see this for the average consumer. There is too much money in oil to let things like this take effect
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post #42 of 47
I see the main problem is seeing what kind of output the process has regarding pollution of waste from the chemical reactions leftovers (if any), power efficiency to make the sea water into fuel and so on.

This could mean a ship can just such the water it needs to keep on fuelling if its very efficient. Or, using solar power energy to create fuel from sea water, and so a somewhat clean energy to produce clean fuels. If that would be the case, this will definitely be game changer regarding what will power our future cars.
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post #43 of 47
Quote:
Originally Posted by Aparition View Post

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.

As a sailor I never again want these words to be spoken.tongue.gif

We actually already have this ability. Subs only need to stop for food as maintenance can be completed underway. As for carriers, we can resupply food and undergo maintenance underway so all we need is jet fuel. We have unlimited jet fuel now, so yeah.thumb.gif

Also, someone else mentioned power consumption of this new process. We don't have any issue with a power source, especially with the new carriers. Someone else mentioned waste. We don't really have nuclear waste like civi plants do because we use better "stuff".
Edited by Shmerrick - 4/12/14 at 9:28am
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post #44 of 47
Quote:

its not the game that changes, its the people, the people will never be the same frown.gif
   
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post #45 of 47
Quote:
Originally Posted by t00sl0w View Post

hey, they didnt try to make it sound like perpetual motion.
plus in my book, this will be awesome.

Fission in a jar...rolleyes.gif
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post #46 of 47
Quote:
Originally Posted by RiverOfIce View Post

They are falling down laughing.

To take seawater and convert it to fuel will take more energy then it can produce. You can not make more energy with less.

The whole point of fossil fuels is the energy that produce them was spent millions of years ago so it seems to be "free to us" fuel.

Getting it out of the ground, refining it, and using it produces more energy then it consumes.

So it is really not a game changer.

It will still be easier to just take solar panels, produce hydrogen from water, and burn that in your cars.

It can be used for long term storage, but honestly, it is not that great.
Nuclear reactions create many times more energy than it takes to split uranium atoms. But in terms of this project...yeah, it's not what I would call efficient. If they can create an enclosed reactor of sorts that does the whole process on the go than it could be great for things such as submarines etc.
post #47 of 47
Quote:
Originally Posted by RiverOfIce View Post

Market value for electricity in the area where nuclear is use is between 6 to 9 cents a kilowatt. The real cost in producing nuclear from NEW plants is close to 8 dollars a kilowatt.


There is simply no "one" way to fix our power problems. Nuclear is currently at the bottom of the heap when it comes to cost vs management.


I am going to have to ask for proof now.

Prove the following statements.

"you could have a few plants running 24/7 making fuel out of water for pennies on the dollar most likely."

"When you throw in the newer plant processes that produce less waste...I think it is a bit cheaper than you are thinking. They virtually cannot melt down."


Solar only works during the daytime, which means you are going to not only have a lot of them, but make the world more efficient at using that power.


Bottom line.

The original article is simply a way to produce fuel if you are not worrying about the extra cost and extra energy consumption.

Honda currently has solar powered hydrogen charging stations for the Honda FCX that can do 2 kg of hydrogen in 24 hours, which is about 140 miles of driving per day.

You've got to consider the Life Cycle Assessment of the system. Solar panels are quite bad for the environment (rare earth metals being used), energy-intensive in production, and inefficient in both space and energy conversion in operation. Their limited ~30 year life cycle is also a drawback.

Proof: http://www.appropedia.org/LCA_of_silicon_PV_panels#Silicon_PV_Panel_Lifecycle_Analysis
Yeah it's a wiki, get the sources from the bottom.

The facts are: there is not enough surface on earth to satisfy energy demand with solar. Nuclear (and fossil fuel in the short term) is the only viable, sufficiently energy-dense energy production method.
Now this news story is not about production, it's about storage.

Electric vehicles cannot store enough energy to travel sufficient distances, and charge times are unacceptable. Fuel cells are better, but liquid hydrogen tanks in cars deplete themselves in a matter of days or weeks, and their high pressure is a hazard. The most energy dense and simultaneously sufficiently safe energy storage media we have are liquid hydrocarbons/alcohols, whether oil-based (gasoline, kerosene, diesel, etc.) or other (the stuff this news piece mentions, the stuff Joule Unlimited makes, Ethanol/Methanol, etc.).

Additionally, this means not having to retrofit the entire world's infrastructure that's more than 100 years in the making, but allows us to incrementally improve technology, which is much easier and cheaper.

Basically renewable energy sources are only viable on a small scale, locally where they are produced, while large coal, oil, fission, or (in the near future) fusion plants can power cities and countries reliably, safely, and quite efficiently.
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