Hydrogen Power: Separating Gas from Salt Water for Energy

Thread starter WCOLtd
Start date Mar 22, 2009
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Hydrogen Power

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Mar 22, 2009

WCOLtd

How much hydrogen gas can be separated from salt water for every kilowatt/hr of energy? Rough approximations are fine.

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Mar 22, 2009

anarchospider

And how to collect the hydrogen?

Mar 22, 2009

russ_watters

Mentor

Well, the bond energy of water is 918 kJ/mol or 51 kJ/g. If electrolysis is typically 75% efficient, you'd need 68 kJ/g. A kWh is 3.6MJ, so that's 529 g/hr.

FAQ: Hydrogen Power: Separating Gas from Salt Water for Energy

What is hydrogen power?

Hydrogen power refers to the use of hydrogen gas as a source of energy. This energy is harnessed by separating hydrogen gas from salt water and then converting it into electricity through a fuel cell.

How is hydrogen gas separated from salt water?

Hydrogen gas can be separated from salt water through a process called electrolysis. This involves passing an electric current through the salt water, which causes the hydrogen gas to be released from the water molecules and collect in a separate chamber.

Why is hydrogen power considered a clean energy source?

Hydrogen power is considered a clean energy source because it produces no emissions or pollutants when it is used. The only byproduct of hydrogen fuel cells is water vapor, making it a sustainable and environmentally friendly energy option.

What are the advantages of using hydrogen power?

There are several advantages to using hydrogen power. It is a renewable energy source, it produces no emissions, it can be produced locally, and it is highly efficient. Additionally, hydrogen fuel cells have a longer lifespan and require less maintenance compared to traditional combustion engines.

Are there any challenges or limitations to using hydrogen power?

While hydrogen power has many benefits, there are also some challenges and limitations to consider. Producing hydrogen gas can be expensive and energy-intensive, and there is currently a lack of infrastructure for storing and distributing hydrogen fuel. Additionally, producing hydrogen gas from fossil fuels would still result in emissions, so it is important to use renewable sources of energy for electrolysis.