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From: Telmo Menezes <te...@telmomenezes.com>
To: everything-list@googlegroups.com
Sent: Wednesday, April 9, 2014 4:23 PM
Subject: Re: Climate models
On Wed, Apr 9, 2014 at 5:06 PM, John Clark <johnkcl...@gmail.com> wrote:
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>
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>
>On Tue, Apr 8, 2014 at 1:04 PM, Chris de Morsella <cdemorse...@yahoo.com>
>wrote:
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>Me: OK I'm going to go over this one more time very slowly and I'll try not
>to use too many big words. First let's assume that solar cells work 5 times
>better than they really do and the capacity factor is 1 instead of .2, then
>worldwide solar cells would produce 1.5*10^11 watts of POWER. And in one hour
>PV would produce 1.5*10^11 watt-hours of ENERGY. And in one year it would
>produce 365*24 = 8760 times that much or 1.3*10^15 watt-hours of ENERGY. And
>now lets see how much POWER would be required to run human technology, it's
>1.5 *10^17 watts of POWER. And to run it for one hour would require 1.5*10^17
>watt-hours of ENERGY. And to run it for one year would require 365*24 = 8760
>times that much or 1.3*10^21 watt-hours of ENERGY.
John,
Looking here:
http://en.wikipedia.org/wiki/World_energy_consumption
It seems that 1.5 * 10^17 is the total energy consumption of humanity in
watt-hours per year, not the power required. So the power required would be
almost 4 orders of magnitude smaller than what you assume (divide by 8760). No?
Which is what I have been trying to tell him -- and being called an ignoramus
by him for pointing this out.
Chris
Telmo.
Now let's work on findings percentages. A percentage is a pure number with no
units and ENERGY and POWER have different units, so you can't divide ENERGY by
POWER as you did and expect to get anything meaningful, but you can divide
POWER by POWER and if you divide 1.5*10^11 watts of POWER by 1.5 *10^17 watts
of POWER you get the pure number .000001. Or you could divide the amount of
ENERGY solar cells produce in one hour, 1.5*10^11 watt-hours by the amount of
ENERGY required to operate technology for one hour 1.5*10^17 watt-hours of
ENERGY, and we still get the pure number .000001. Or you could divide the
amount of ENERGY solar cells produce in one year, 1.3*10^15 watt-hours of
ENERGY, by the amount of ENERGY required to operate technology for one year,
1.3*10^21 watt-hours of ENERGY, and we STILL get the pure number .000001 And
that is why I originally said photovoltaics provide .0001% of demand. However
you said that in the real world solar cells are
much worse than that and the capacity factor is not 1 but is .2, and that
seems about right to me, so they only produce 20% of the POWER and 20% of the
ENERGY that I used in the above calculation, therefore photovoltaics really
only provide .00002% of what is required to run the world.
>
>>
> > You: John you are so full of yourself that you cannot admit you mistook
>capacity for output
>Chris, 4 or 5 posts ago it became obvious to me that you are a ignoramus, your
>total confusion between power and energy and your bizarre belief that solar
>cells are better if they have a 20% conversion factor than if they had a 100%
>conversion factor could lead to no other conclusion. However being a ignoramus
>is not necessarily a devastating state to be in because sometimes ignorance is
>curable; but more recently it became clear that you are also incapable of
>learning, or at least learn at such a slow rate it is unmeasurable by me. And
>unfortunately at the present day medical science has no cure for stupid.
>
>
> John K Clark
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>
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