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13 comments on An echoing Shhh, or more on mining of oil shale

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Luis de Sousa on June 29, 2006 - 3:29am Permalink | Subthread | Parent | Comments top
Hi cactus, very good point indeed.

Knowing that the EPR of Coal is around 30, that 12% figure gives us some (but small) hope about Shale.

If 1 ton of coal yields 23000 MJ, the energy spent to mine it would be about 770 MJ (766,666 actually).

So using the same techniques, and assuming that mining 1 ton of Shale takes the same energy has minig 1 ton f Coal, Shale would have an EPR of 3.5. This is lower than Nuclear but higher than Onshore Wind.

Still that rock would have to be heated up, lowering even further the EPR value.

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tom deplume on June 29, 2006 - 3:26pm Permalink | Subthread | Parent | Comments top
You are way off on wind power EROEI. The larger turbine recoop production energy in about 1 year. With a 20 service life minimum that's a 20:1 EROEI.
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13 comments on An echoing Shhh, or more on mining of oil shale

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