------ Original Message ------
From: "Ben Goren" <[email protected]>
To: "Peri Hartman" <[email protected]>; "Electric Vehicle Discussion
List" <[email protected]>
Sent: 21-Dec-14 12:37:44 PM
Subject: Re: [EVDL] PNAS report cites study that EV's pollute more than
gascars.
On Dec 21, 2014, at 1:23 PM, Peri Hartman via EV <[email protected]>
wrote:
How do you see reusing the CO2 improving the picture?
Because, first, the CO2 is going to get used once whether we want it to
or not; and, second, if we can use that CO2 a second time, we
<i>don't</i> have to extract an equal amount from the ground.
PH: you're assuming that there isn't some other gas that could be used -
perhaps compressed air or compressed nitrogen or whatever. Also you're
assuming the CO2 has to come from a coal plant rather than simply be
extracted from the atmosphere or some other source. Third, the reason
we extract CO2 (actually coal) from the ground isn't to produce CO2,
it's to produce energy. Even if the need (in fracking) for CO2 went
away, we would still extract coal.
So, I wouldn't choose any of your options. I'd simply choose putting
more electricity on the grid or directly to users.
Then more petroleum will be pumped out of the ground and burned in
internal combustion engines.
PH: true. So what? Pump petrol or dig coal. Either way, it's more
efficient to directly use the electricity. When we've eliminated all
the coal plants and diesel generators, then we can start doing what you
say. Until then...
Why waste some of the energy to produce fuel when we already have a
direct demand to replace electricity generated from fossil fuels?
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