Re: Are nukes the answer to global warming?

From: G. R. L. Cowan (gcowan_at_eagle.ca)
Date: 03/09/05 

Date: Wed, 09 Mar 2005 14:31:37 -0500

Clouseau2 wrote:
>
> owl wrote:
> > On 8 Mar 2005 11:11:03 -0800, "Clouseau2" <eric@webmethods.com>
> wrote:
> >
> > >owl wrote:
> > >> On 7 Mar 2005 20:38:36 -0800, "Clouseau2" <eric@webmethods.com>
> wrote:
> > >>
> > >> >owl wrote:
> >
> > >Uhh, I've been researching this stuff for over a year. EROEI ==
> Energy
> > >Returned on Energy Invested. Here is a chart of some common
> returns:
> > >
> > >http://www.abelard.org/briefings/energy-economics.asp#tarsands_table
> >
> > >Note that tar sands are 1.5, Middle East oil 30+.
> > >
> > >I've read over 5 books on this subject. How many have you read?
> >
> > None. I caught on to the concept with a few links. 5 books, and
> > you're still on the basics ... sigh ...
>
> So, is the EROEI of the tar sands 1.5 or not?

More like three, in current practice.
Otherwise said, a terajoule of energy of oil in the ground
requires ~0.1 TJ of gas and 0.2 TJ of the oil before
0.7 TJ can be shipped as upgraded heavy oil.

> Oh, and I forgot to mention the massive quantities of fresh water
> and natural gas required to "cook" the tar sands.

Some new developments are underway that will make their
own hydrogen, i.e. not need to import natural gas.

--- Graham Cowan, former hydrogen fan
http://www.eagle.ca/~gcowan/Paper_for_11th_CHC.html --
how individual mobility gains nuclear cachet

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