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A useful summary of the Hydrogen Economy

  • 07-06-2006 12:57pm
    #1
    silverharp
    Registered Users, Registered Users 2 Posts: 18,854 ✭✭✭✭


    http://www.powerswitch.org.uk/portal/index.php?option=content&task=view&id=483&Itemid=2


    Comes to the conclusion that Hydrogen is too inefficient to be used as an energy source/conduit

    A belief in gender identity involves a level of faith as there is nothing tangible to prove its existence which, as something divorced from the physical body, is similar to the idea of a soul. - Colette Colfer



Comments

  • #2
    Foxwood
    Closed Accounts Posts: 1,491 ✭✭✭Foxwood


    silverharp wrote:
    http://www.powerswitch.org.uk/portal/index.php?option=content&task=view&id=483&Itemid=2


    Comes to the conclusion that Hydrogen is too inefficient to be used as an energy source/conduit
    He makes a lot of good points, but it's worth pointing out that 20% efficiency in converting a "free" source of energy (or energy that isn't currently harvested), is not a energy sink.

    The main attraction of hydrogen is that the raw ingredient for electrolysis (water) is widely available, and the combustion products are benign. Countries like Iceland, that have an abundance of "free" geothermal energy can (in theory) take advantage of this to convert non-portable geo-thermal energy into "portable" energy for transport.

    Countries that have a useful surplus of the other main "free" or currently unharvested energy source, sunlight, tend not to have an abundance of water.

    Using Natural Gas as a feedstock for Hydrogen only makes sense in that it's easier to scrub for nasty pollutants at a central plant than at the tailpipe.


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