Regarding Hydrogen as fuel

I’m reading a fact-box for one of our articles, and it says that Pressurization of hydrogen absorbs 10% of the energy stored, and that the energy used to pressurize the gas is lost when the gas expands.

My question: Why? Consider one strategy for storing energy involves compressing gas in abandoned mines, why couldn’t we recapture some or all of the energy used to pressurize hydrogen?

Eventually, I think we’re going to have a car out there that recaptures as much of its energy as possible, from brake regeneration to heat recapture, so why not this, too?

~ by Skennedy on July 1, 2008.

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2 Responses to “Regarding Hydrogen as fuel”

  1. We’re working on it.
    :) Well…not me, but the guys in the labs are.

    jellopony said this on July 1, 2008 at 7:53 pm

  2. There are better ways to get the hydrogen separated from the OH in water. The main thing we need is a clean energy source for the electrolysis of water. Some places can use hydroelectric power to do this. That can effectively “charge” the type of battery that would have H+ and OH- separated by a membrane, and then derive energy from the combining of the two. I’ve seen batteries like this that have been made rechargeable by an electrolysis process.

    It’s not nearly as efficient as it could be, but it’s one idea that seems to be moving in the right direction, in my mind.

    rachelann1977 said this on July 1, 2008 at 11:17 pm

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