On 6/27/2014 9:07 AM, John Clark wrote:
On Thu, Jun 26, 2014 at 5:45 PM, meekerdb <meeke...@verizon.net
<mailto:meeke...@verizon.net>> wrote:
> Within each big square is a smaller 145 km by 145 km square showing the
area
required in the desert – one New Jersey – to supply 30 million people with
250 kWh
per day per person
Same old problems. Never mind how you can make all those solar cells cheaply enough and
long lasting enough to be practical, I want to know how you plan to store that energy so
you can use it at night and on cloudy days.
I'm gonna invent new battery, thermal, hydro storage technologies.
I want to know how you're going to economically convert DC to AC.
I'm gonna trasmit DC because that's more efficient anyway.
I want to know how you're going to get the power from the desert where nobody lives to
the city thousands of miles away where 30 million people live.
Efficient DC power lines.
I want to know how you're going to shut up the environmentalists when they start
screaming bloody murder about paving over a area of pristine desert the size of New
Jersey with solar cells.
I'll leave that one up to you.
And I want to know what you're going to say to environmentalists when they notice that
solar cells are black and only convert about 12% of the sunlight into electricity with
the rest turning into heat which will transform that area in the desert the size of New
Jersey into the hottest place on the surface of the Earth. The hottest by far!
You didn't read it did you. McKay notes that PV is not efficient enough. All his area
calculations are based on solar-thermal power plants. You also must have missed the news
that energy is conserved. So if you turn part of solar energy into electricity it doesn't
make the area hotter.
Brent
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