Renewables Just Keep Getting Better

Oct 12, 2019 90 Replies

How is that relevant?

Sylvia

Think about it. The optical concentrators wouldn't have generated a particularly uniform density of illumination either, and the peak flux would have been quite lot higher than your raindrops could have managed.

Bill Sloman, Sydney

So, we agree. Good. Let's move on.

So, solar farm make the ground not useful for crops. So, we agree. Good. Let's move on.

Alt-right style insults don't make your case.

You are showing your ignorance and prejudices, again.

Coal is on track to be phased out by 2025.

That's hardly a compelling argument. Concentrators may be carefully designed to equalise the light over the cell area.

The problem as I understand it is that before a current can flow through a solar cell at all, there have to be free electrons in it. No free electrons, then no current, even if there's a voltage across the cell.

So put 10 cells in series, but shield one from light, and what you get is not 9/10 of the current, or 9/10 of the voltage, but a lot less of both.

Sylvia.

Those supporting high levels of renewable energy might at least try to explain how they think this is going to work.

Sylvia.

The obvious thing to do is cover the sheep with solar panels.

Cheers

Clive

That would work, except when they are mating :)

They might be, but that would cost money. I don't see any sign that anybody is spending that sort of money on the gear that showed up in the wikipedia link I posted

formatting link

Fresnel lenses are pretty crude as lenses go.

Really bad thinking. A photon hitting a solar cell creates a pair of charge carriers, with a certain amount of free energy.

If you were using the junction as a detector it would be biased so that pos itive charge carrier was swept to the negative electrode, and the negative charge carrier swept to the positive electrode.

If you use to generate power it operates with a small bias in the other dir ection, so that some of the positive charge carriers still make it to the p ositive electrode, and some of the negative charge carriers to the negative electrode, but some recombine without doing you any good.

A bigger bias means that fewer charge carriers make it to the electrodes, s o you get less current, but at a higher voltage.

All this happens in a space that is small enough that charge carriers from different photons don't interact.

h.

Obviously, but you clearly don't understand why.

Bill Sloman, Sydney

The link isn't from any kind of explicit supporter of renewable energy - it s from the Northern Indiana Public Service Company LLC, which is in the bus iness of keeping its customers happy. It's happy to claim to be planning to support renewable energy, but it clearly doesn't expect its customers to d ig deep into the plan.

The South Australian utilities seem to have been happy to invest heavily in intermittent renewable sources without bothering to think to hard about wh at would happen when they weren't delivering, and got their Tesla power pac k after they'd been jeered at about it.

Lots of people seem happy to work like this - if it isn't broken, don't fix it.

Bill Sloman, Sydney

It might seem less obviously correct after you'd tried it.

Bill Sloman, Sydney

I suppose it's something only androids dream of.

Cheers

Clive

Yep, and without the regulation, standardization and technician training would be a nightmare. Having fifteen disjoint solar industries, like too many chefs, or fifteen packages/pinouts for an op amp, can ruin the soup.

When something of value is built with a subsidy, that subsidy is only a loan; taxes will pay it back.

On Tuesday, 15 October 2019 00:41:26 UTC-7, Tom Gardner wrote: ...

...

And yet there are many projects showing that crops and solar can coexist favorably:

eg

formatting link
formatting link
formatting link

kw

That's overstating it.

Lab experiments are a start, but no more. Most lab projects in most disciplines fail to reach wide scale adoption.

A trial covering a massive 175m2. A start, but by no means conclusive.

The claimed advantages in Arizona are not relevant to the UK.

Another very small trial; even those results are inconclusive.

"Futurity is your source of research news from leading universities."

Potentially the least self-serving of those references, but it is a Q&A session of possibilities rather than demonstrated successes.

"SETO funds innovative cooperative research and development projects that drive down the cost of solar electricity and improve the performance of solar technologies that enhance grid reliability and security. "

I saw what you did there. ;)

Cheers

Phil Hobbs

Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com

Philip K Dick "Do androids dream of electric sheep?"

formatting link

Clearly the idea is dick-headed.

Bill Sloman, Sydney

Like always, you can't read. Try it again. I'll let you move your lips this time.

But they must inspect the entire system before re-energizing it.

Wrong.

You can't, obviously.

Try?? When you are getting PAID to support "renewables"?

Robert Baer wrote in news:MswpF.57465$O snipped-for-privacy@fx39.iad:

I saw a very well made scale replica of a working steam locomotive engine on "American Pickers" the other day, and that sucker looked cool. Ought to bring back steam powered cars maybe. Fire them with NG or such.

  • But i have to PAY for those electrons as they flow thru my home. Hell, i had to pay for the wires! Nuttin' free, sweetheart.

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required