How then, do we move backwards? How does a society, with most of the people having no clue of future events, move from being dependent on a vast and intertwined network of goods and services produced by the indigenous people of whereever, to a local resource and renewable energy based society, and do so in the timeframe available (20-30 years using the most liberal extimates, 10-20 with resonable estimates, 5-10 with worst case scenarios), all the while prices on everything increasing, world politics getting more militaristic, governments continuously reducing civil liberties, shortages of goods on the market and weather patterns resembling bad Hollywood movies?
Posted: Wed Dec 08, 2004 11:29 pm Post subject: EROEI
Anybody have any idea of the Energy Retrun on Energy Invested for Gas to Liquids conversion process?
I read that currently, Natural gas has an EROEI betwen 5-10.
Although oil had a very high (100) ratio years ago, now it also is about 10.
So what about the conversion process?
Any one seen any data?
No, but the EROEI of converting tar sands and oil shale to useable product is pathetic. I'd imagine gas-to-oil wouldn't be much better...or they'd be catching all the methane coming out of the thawing Arctic ground and be converting away!
NOTHING replaces oil & gas--and their EROEIs are now in the frightening ratio!
Gas to liquids conversion is a bit better than tar sands. The efficiency is around 60 - 70% for gas to diesel. If the EROEI of gas drilling is around 5 to 1, then EROEI of gas drilling to diesel should be about 3.5 to 1, significantly better than tar sands and oil shale.
Gas to liquids conversion is a bit better than tar sands. The efficiency is around 60 - 70% for gas to diesel. If the EROEI of gas drilling is around 5 to 1, then EROEI of gas drilling to diesel should be about 3.5 to 1, significantly better than tar sands and oil shale.
I haven't heard about "gas to diesel". Wouldn't it be more efficient to convert methane to lighter hydrocarbons in the gasoline range (pentane - octane)?
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