Re: 5 Billion per nuc power plant... we can build 100 of em..
- From: Tim May <timcmay@xxxxxxxxxxxxxxxxxx>
- Date: Thu, 29 Nov 2007 21:44:12 -0800
In article
<16d072a7-5b7d-4ce3-a897-49a95d612379@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>,
phil scott <phil@xxxxxxxxxxxxx> wrote:
Your physics and math are deeply flawed. While PV may someday be all
that you claim it can be, it is not that now:
for about 20k in parts, another 20k in labor you can add enough solar
and wind to a home to run it and power an electric car for modest
runs.,,,IF you use gas fror the oven and heating and drier etc... tha
was a study reporteed in the San Jose paper 5 years ago... it would be
less today if you also added LED lighting..... if you set the
thermosat to 50 t night and used a matress waermer... even less.
It's all in the KWH. No matter the type of lighting, the setting of
thermostats, the KWH cost of PV is still higher than the KWH cost of
conventional gas/electric. Do the math.
Hint: one can still use LED lighting, somewhat dark for a comparable
cost, and set the thermostat at 50 at night, without using PV.
less if you use govt surplus solar arrays... even less if you dont
mind using about 10% pg and e power... problem is payback is in the 10
to 20 year range. too long for a viable investment at this time..
Indeed, it's all in the math, as you acknowledge.
However, I'm curious about these "govt surplus solar arrays" you
mention.
Inasmuch as solar PV is fairly new, offered by Siemens, Hitachi, etc.,
just who made these "govt surplus" arrays? Where can I find them, in
quantities sufficient for a whole house array? (Meaning, Edmund
Scientific levels of "toy" arrays don't count.)
maybe its better if you have ultra efficient insulation, LED
lighting.. maybe its a 7 year payback. at todays utility rates. so
actual payback coukd be faster.
Again, with ultra efficient insulation, solar is not the issue.
By the way, for most climates, where it is cool 8 or more months out of
the year, LED lighting is not even needed. Do the math. The power
output of a bulb goes straight into heating a house, with only a tiny
loss due to radiation out through windows. The rest is thermalized, a
technical term meaning "nearly all of the power is converted to heat."
Modulo the difference in heating via propane or natural gas vs. heating
with electricity, leaving lights on is just another way of heating.
Photovoltaic is, currently and for the foreseeable future, for Gorehead
blissninnies.
Ironically, Bush's Crawford ranch makes far greater use of passive
solar, photovoltaic, and heavy insulation than Gore's Tennessee home
does.
I'm not a Bush supporter, but I'm also not a solar blissninny.
--Tim May
.
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