[ExI] EP and Peak oil.
hkeithhenson at gmail.com
Wed Apr 2 18:00:42 UTC 2008
On Wed, Apr 2, 2008 at 9:59 AM, John K Clark <jonkc at att.net> wrote:
> "Keith Henson" <hkeithhenson at gmail.com>
> > 100 stations [...] That's about 1% of the output of a NJ sized solar
> > panel.
> Yes I think you're right, I must have screwed up a couple of decimal points,
> sorry. But even using your figures that's over 2 square kilometers of solar
> panel per gas station, not very encouraging.
> > Now look at this from using power sats, which get from 3 to 10 times as
> > much sunlight per square meter.
> In space yes, but the microwave energy density on the ground would be
> less than sunlight.
Setting the power level to less than 1/4 kW/square meter was for
safety reasons. I don't know what actual power level would go
non-linear and short out the ionosphere. Also the rectenna doesn't
block sunlight so you can put them over farmland--something you can't
do with solar cells.
> I know rectennas are more efficient than solar cells
> but I still find that figure discouraging. I'm not saying it's imposable, it
> might even be practical, but I wouldn't want to stake my entire future
> on it. I want a plan B.
Plan B is that something like 90% of humans starve.
Of course *no* energy project, not even power sats, can work when
there is exponential population growth. All that happens is a more
and more massive die off--eventually.
Though I seriously doubt *human* population growth will be a problem
in the post singularity era.
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