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View Diary: Breaking: Bubbling ... the news isn't good (294 comments)

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  •  What is thermal depolarization? n/t (0+ / 0-)

    Male, 21, -4.75/-6.92, born and raised TN-05, now WI-02

    by fearlessfred14 on Tue Dec 13, 2011 at 02:03:22 PM PST

    [ Parent ]

    •  Basically, a big damned pressure cooker. (1+ / 0-)
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      maybeeso in michigan

      You feed organic feedstock in -- paper, offal, old tires, plastics, yard waste, dead bodies -- whatever, so long, basically, as it's organic in nature.  You cook it for a while at something like 400C and high pressure, and it essentially converts the organic material into water, a slurry of industrially and agriculturally useful basic compounds, 'natural gas,' and what is essentially light, sweet crude.  The fraction of gas to crude depends on the feedstock put in, but when using turkey offal, plants were running at about 85% efficiency -- that is, 85% of the energy content was in the resulting harvested oil and gas fractions, and 15% was used to fuel the process itself.

      If you use renewable feedstocks (such as plant and animal matter and waste,) you get carbon-neutral fuels.

      •  RE that parasitic load (1+ / 0-)
        Recommended by:
        maybeeso in michigan

        Do you have open source documentation of that 85 percent efficiency?  That is not what I've seen / encountered but I am certainly open to learning.

        Blogging regularly at Get Energy Smart NOW! for a sustainable energy future.

        by A Siegel on Wed Dec 14, 2011 at 08:24:13 AM PST

        [ Parent ]

        •  It's what I've read in Wikipedia (1+ / 0-)
          Recommended by:
          maybeeso in michigan

          and very close to other numbers I've read in other articles about the process (I've seen claims between 15 and 25% loss.)  Apparently the 85% is based on a claim by a company doing the process, Changing World Technologies.

          A big problem with evaluating this technology is the fact that there seem to be very few open documents about it.  

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