Electrical Power productions are about to change soon

Discussion in 'General Discussion' started by Quigley_Sharps, Feb 22, 2010.


  1. Quigley_Sharps

    Quigley_Sharps The Badministrator Administrator Founding Member

    Electrical Power productions are about to change soon enter the box:
    http://www.kindredpartners.com/portfolio-news/1068

    The money invested in alternative is starting to send us in new directions.
     
  2. Quigley_Sharps

    Quigley_Sharps The Badministrator Administrator Founding Member

     
  3. Clyde

    Clyde Jet Set Tourer Administrator Founding Member

    briliant
     
  4. ghrit

    ghrit Ambulatory anachronism Administrator Founding Member

  5. Maxflax

    Maxflax Lightning in a bottle

    While I do not see hydrogen cars as being currently feasible.. why not channel the excess hydrogen into fuel for a conventional generator?
     
  6. ghrit

    ghrit Ambulatory anachronism Administrator Founding Member

    Hydrogen is not a particularly good fuel. Its light and small molecule is difficult to contain, and requires very high pressure to maintain it as a liquid (which would be the only practical way to carry it around, say in a car tank, which would be almost prohibitively heavy and bulky for transportation use.) I'm ignoring the energy density of pure hydrogen as well, it is low on a mass basis compared to almost any other burnable. But I think you knew all that.

    Now, it isn't clear to me what excess hydrogen you are thinking of in this instance. Sridhar is making gas on one side of the day and recombining it on the other side. The recombination is in exactly the same ratio as the products. In fact, that hopefully ideal cycle will be a net user of resource (pure water and sunlight) not a producer. Leakage will cause that. That does NOT mean it wouldn't work. However, it WOULD require a pretty heavy investment in collectors to power the (also expensive) compressors (one for H2, the other for O2) during the day. In short, it is another form of energy storage akin to batteries with similar, but greater, losses. Practicality is a long way off, I fear.

    By the way, hydrogen IS fed to electrical generators as a coolant, not as fuel. (I'm being a wise guy here, but truthful.)

    [beer]
     
  7. fireplaceguy

    fireplaceguy Monkey+

    Great point. If I recall correctly, the energy density of hydrogen is roughly 1/20 the energy density of gasoline. That means your fuel tank would have to be 20 times larger to have the same range (space prohibitive) or you would have to settle for 1/20 the range between fillups. If your car or truck goes 300 miles on a tank, your range between fillups would be 15 miles with hydrogen. Think about stopping to re-fuel once or twice on the way to work, and once or twice on the way home as well. Then think about 20 times the tankers on the road delivering compressed hydrogen to stations. Then, just for grins, think about the Hindenburg.
     
  8. melbo

    melbo Hunter Gatherer Administrator Founding Member

    The amount without power is pretty good news for wind. Many states have set (unreachable IMHO) goals for renewables.
     
  9. ghrit

    ghrit Ambulatory anachronism Administrator Founding Member

    Setting a goal is one thing, reaching it is entirely another pot of bouillabaisse. It can be forced with massive infusions of money into inefficient (read as hurried) research that will produce the desired effect. One might inquire about where that infusion will come from. Methinks it will take an effort on the scale and expense of JFK's moon mission vision. I don't think we can afford that these days.
     
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