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Science Forum Index » Physics Forum » where do you get solar panels from?
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| Eeyore |
 Posted: Tue Apr 29, 2008 9:07 am |
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"zzbunker@netscape.net" wrote:
Quote: Eeyore wrote:
j...@specsol.spam.sux.com wrote:
harmony wrote:
i sure would like to install solar panels for powering the house in texas.
snip
The only justification for people with access to the electric grid
is a warm feeling that they are doing something to "save the planet".
Exactly.
Both PV solar and 'windmills' are the very worst kind of energy tokenism. Neither
are very sensible uses of money.
They why PV Cells were even built.
For spacecraft and off-grid applications.
Quote: Since they work nest
nest ?
What computers ?
No.
No.
Yes, spacecraft. As I said that's what they were desigend for.
Window dressing to look 'green'. The provide an almost poinlessly small fraction of the
power a supermarket uses. A dreadful waste of resources.
Quote: rather than with morons like sci,physics and sci,energy.
You mean you have a downer on scientists because they tell you the stark cold truth ?
You don't believe in over-unity and 'free energy' too do you ?
Graham |
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| Guest |
| Posted: Tue Apr 29, 2008 9:15 am |
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In sci.physics Tom <Nospam@eatme.com> wrote:
Quote: 10 years? That's just false. I ran the numbers. If you take a loan out over
30 years it's a net loss. If you pay cash you might get a return in 15 but
that is not counting on a failure.
If you have to replace the grid tie inverter that can set you back 5k.
That's another 4 or 5 year set back. You should also be aware that a 5K W
PV system will only reduce
your power bill by 20% at best. I calculated a 20kw system would reduce your
bill about 85% however that comes at a cost of 70k for that system. These
panels need to come down to 3 dollars per watt to look atractive. They are
currently around $6 or $7
per watt. I am not trying to discurage you but just remeber that the people
selling these
are not going to be 100% honest. other wise they would not be selling them.
Some indicators that the quoted payback is "optimistic" is there is
no allowance for the cost of money or maintenance.
Another is that the power you will get exceeds what is available at
your location, which can be found at:
http://rredc.nrel.gov/solar/old_data/nsrdb/redbook/atlas/
--
Jim Pennino
Remove .spam.sux to reply. |
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| Paul Mays |
| Posted: Tue Apr 29, 2008 9:30 am |
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<zzbunker@netscape.net> wrote in message
news:935f76f4-520a-418b-8b49-e204b1eaeca7@34g2000hsh.googlegroups.com...
On Apr 28, 1:42 pm, Eeyore <rabbitsfriendsandrelati...@hotmail.com>
wrote:
Quote: j...@specsol.spam.sux.com wrote:
harmony wrote:
i sure would like to install solar panels for powering the house in
texas.
snip
The only justification for people with access to the electric grid
is a warm feeling that they are doing something to "save the planet".
Exactly.
Both PV solar and 'windmills' are the very worst kind of energy tokenism.
Neither
are very sensible uses of money.
They why PV Cells were even built. Since they work
nest in computers, lasers, robots, satellites, and supermarkets,
rather than with morons like sci,physics and sci,energy.
Again you can stick em on ya house.. buy a batt bank, inverter,
controlers and the like ifn ys want, They work just fine... But will
Never, Never pay for them selves and do nothing to help with
gloBull warming, energy reduction or any of the reasons people think
they will help with..
--
http://fast.filespace.org/PaulRMays/Postulate.pdf
--
Paul R. Mays
"I Believe in Nothing, I Know, I think I Know or I Do Not Know
I Never Believe... For to Believe is a Religious Incantation" |
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| Paul Mays |
| Posted: Tue Apr 29, 2008 12:00 pm |
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Guest
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<zzbunker@netscape.net> wrote in message
news:1581ebb7-3bde-4b44-93ea-9985fc860bef@y38g2000hsy.googlegroups.com...
On Apr 29, 10:30 am, "Paul Mays" <Pa...@Mays.com> wrote:
Quote: zzbun...@netscape.net> wrote in message
news:935f76f4-520a-418b-8b49-e204b1eaeca7@34g2000hsh.googlegroups.com...
On Apr 28, 1:42 pm, Eeyore <rabbitsfriendsandrelati...@hotmail.com
wrote:
j...@specsol.spam.sux.com wrote:
harmony wrote:
i sure would like to install solar panels for powering the house in
texas.
snip
The only justification for people with access to the electric grid
is a warm feeling that they are doing something to "save the planet".
Exactly.
Both PV solar and 'windmills' are the very worst kind of energy
tokenism.
Neither
are very sensible uses of money.
They why PV Cells were even built. Since they work
nest in computers, lasers, robots, satellites, and supermarkets,
rather than with morons like sci,physics and sci,energy.
Again you can stick em on ya house.. buy a batt bank, inverter,
controlers and the like ifn ys want, They work just fine... But will
Never, Never pay for them selves and do nothing to help with
gloBull warming, energy reduction or any of the reasons people think
they will help with..
*Nothing* ever pays for itself. That's the A.I. micro-computers,
holograms, fiber optics, lasers, networks, satellites, bio-energy,
DVD, and robots are used in conjuction with PV cells Since the PV
Cells
are a means to a means for you sci.energy idiots, not a means to
an
end.
You have some really heavy issues don't cha...
"A.I. micro-computers,
holograms, fiber optics, lasers, networks, bio-energy,
DVD, and robots are used in conjunction with PV cells"
Explain where PV cells are used in these applications? Cause
they are Not Used for any of them for energy production.
When and why would we use them? well lets see.... On a satellite
they are used simply because we have to. It would be much,much
cheaper and easer to stick a nuke generator on them but the same
Idiots that want you to stick PV's on your roof think Nuke is
synonymous with Evil, and its really tough to run an extension cord
up to orbit.
On Calculators where low voltage, low current and cost allow its
great as the cost of replacing batt's make it economical.
All the other application for them are Very specific for very limited
environs where cost is not an issue. Other than those issues they
are useless.
From a green stand point I take it you have no idea of all the
bad crap that comes out the waste end of a PV production
plant do you.
So, this will be my last response on the issue as you have a
agenda that is not based on knowledge of the subject at hand. It
seems to be a position of ignorance of the environment as a whole.
You seem to think man is an evil being that is destroying this pristine
planet and should give up all the technologies that allow folks like
you to have the technology to even post here.
Its pure arrogance to think man knows that the global temperature is
absolutely perfect right now. Or even if all the stuff we do actually
impacts the planet. Maybe if world temps went up 20 deg it might be
the greatest thing that could happen. Vast frozen tundra's may turn into
super agriculture regions, Ocean fish stocks could skyrocket, New coast
lines could create new flourishing cities and the list of the good stuff is
great.
If Man is the cause for GloBull warming is man and our actions are
melting the ice caps then why did the last ice age end with out very many
of us to cause it.
You are listening to some really idiotic folks out there guy. these are the
same
folks that told you that the Alaskan Pipe line would devastate the caribou
herds, herds that are 30% larger than before the pipeline. Not one
prediction
of these idiots has ever been correct and you follow them like a lemming.
I saw the creator of the InterNet tell folks that Ice Caps are melting yet
Antarctica
had a 20% larger ice sheet than last year. Over and over the "Facts" that
are
put out by these folks are proven wrong but many rather B'Lieve them that
those that actually know what's going on.. simply amazing.
--
http://fast.filespace.org/PaulRMays/Postulate.pdf
--
Paul R. Mays
"I Believe in Nothing, I Know, I think I Know or I Do Not Know
I Never Believe... For to Believe is a Religious Incantation" |
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