Solar PV comparable to gas fired power stations

Well, men may have some sort of kinetic advantage in straight downhill racing, but the way we ski, we turn. The less you turn, the faster you go, until you can't stand it any more, or you crash. So going fast is a matter of technique and risk. But I suspect she'll catch up in a year or two. Time is on her side.

All sorts of cool things are prevented by fear.

John

Reply to
John Larkin
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Why are all the cool breakthroughs a decade or two away?

And why is it that actual breakthroughs weren't predicted 10 or 20 years in advance?

John

Reply to
John Larkin

ay

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Very odd name, not a joke. Also about pinch effect.

Reply to
Greegor

Isn't any hydroelectric dam ALREADY using a storage lake?

Why shuffle water to another lake and call it stored energy?

Why not just shut off the sleuce for 2 of 6 turbines at night so that flow backs up in the reservoir behind the dam?

Please explain how additional storage lakes work.

Sounds like it has great potential but what's the logic?

Reply to
Greegor

Geosynchronous communication satellites were predicted by Arthur C Clarke in 1945.. the first was launched in 1964.

The iPad spec is remarkably similar to a spec for the perfect computer drawn up by someone in approximately 1990.

Reply to
Basil Jet

Or to the NewsPad, also dreamed up by ACC in the movie 2001: A Space Odyssey (1967).

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal
ElectroOptical Innovations
55 Orchard Rd
Briarcliff Manor NY 10510
845-480-2058

email: hobbs (atsign) electrooptical (period) net
http://electrooptical.net
Reply to
Phil Hobbs

Why would the mass need to be liquid ?

Just build an electric railway up to a high plateau. During the night run the trains loaded with some heavy material (such as depleted uranium) up to the high plateau. During the day, let the same trains return down using regenerative breaking :-).

In order to keep the air resistance at manageable levels, the train can not go very fast, so the track would have to be pretty steep.

Reply to
upsidedown

The price IIRC is dropping around 16% a year. And there seems to be no lower bound visible.

--
Dirk

http://www.neopax.com/technomage/ - My new book - Magick and Technology
Reply to
Dirk Bruere at NeoPax

They aren't. If you keep your eye on PV you will see it happening week by week.

--
Dirk

http://www.neopax.com/technomage/ - My new book - Magick and Technology
Reply to
Dirk Bruere at NeoPax

And used in Star Trek some decades previously, along with clamshell cellphones.

--
Dirk

http://www.neopax.com/technomage/ - My new book - Magick and Technology
Reply to
Dirk Bruere at NeoPax

--
A memory which pops up now and then can hardly called brooding.
Reply to
John Fields

--
So skiing is one of those non-sports that you _do_ like?
Reply to
John Fields

--
He will; time wounds all heels.
Reply to
John Fields

In this modern reduce/re-use/recycle "greenie" era, from the hydro generation pov you could call it recycling the water.

In simple terms:

. During the day (peak load period) you use hydro to generate power to supplement the fossil fuelled base-load generating capacity.

. During the night (minimum load period) you use effectively surplus base-load generating capacity to pump the working fluid (literally) back up the hill to the point it started from.

You are using the potential energy of the stored water in the higher dam/pond as an energy "reservoir".

This allows the base load generating plant to operate at what is generally closer to best efficiency, and reduces the need to capitalise plant to meet peak demand.

Envisage a clipped sine wave.

Reply to
who where

Basil Jet wrote in news:4d5f5701$0$2517$ snipped-for-privacy@news.zen.co.uk:

howe long ago did cartoon character Dick Tracy have the wrist TV/communicator? today's cellphones do that and more.

--
Jim Yanik
jyanik
at
localnet
dot com
Reply to
Jim Yanik

snipped-for-privacy@downunder.com wrote in news: snipped-for-privacy@4ax.com:

consider the LOSSES and what they do to system efficiency.

--
Jim Yanik
jyanik
at
localnet
dot com
Reply to
Jim Yanik

Dick Tracey had the Moon Maid.

--
You can't fix stupid. You can't even put a band-aid on it, because it's
Teflon coated.
Reply to
Michael A. Terrell

71-75% efficiency? Didn't someone here claim 90%?
Reply to
krw

Pump greenbacks. We already have that pump "primed", or so we're told.

Reply to
krw

Just guard the gold more heavily when it's at the top of the mountain.

Reply to
krw

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