solar panel output degradation?

ve.

e wants to make.

the shelf battery storage. It's competing with diesel-powered on-site gener ators which are lot more expensive than regular grid generation.

that suggests they are useful - it's cheaper to store solar power you don't use than it is to sell it to the grid, then buy it back later.

Matlab and Simulink are wonderful modeling tools to get insight into these approaches. Before building, I'd make some models to answer some questions. (Yes, I kno w, all models are wrong, but some are useful). Many moons ago, I modeled a solar water heater & hot water storage system ( basically one big heat transfer problem encompassing all 3 forms of heat tr ansfer) for my house. I then build the solar heater and collected data to verify my model. A neat application of mathematical first principle equatio ns, determining the correct coefficient values, and accounting for losses. A model of this type could tell you how much storage you need given daily d emands and if you have enough hot water to run your washing machine at 3 AM fun stuff

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

Acording to KRW, regular old crimp lugs are 'gas tight' and do not need 'these' elements.

These are not the crimps you are looking for...

snipped-for-privacy@decadence.org wrote in news:qt8s4v$2va$4 @gioia.aioe.org:

not

Star war reference btw.

The crimp lugs John mentions ARE the crimps you are looking for.

Rooftop solar heaters are expensive to install and maintain.

We wash in cold - with the right detergent it works just fine.

Short-term regulation is useful, but is very different from long-term bulk storage, e.g. pumped hydro.

There have been many such "breakthrough technology" announcements. Eventually one will actually deliver.

Until then, we live in hope.

Very plausible, but I haven't looked for specific details.

Interesting. Is that true everywhere, or just in relatively remote locations?

Running a clothes dryer is less important than a washing machine, even in the relatively damp UK.

My guess: it's mostly wealthy city types, and perhaps their hobby farms. People who don't need to get a return on their investment, other than emotional fuzzy feelings.

In Sydney we only use our dryer about once a year, for emergencies, and usually just to finish a nearly-dry load.

Clifford Heath.

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How? Elon Musk's battery bank in South Australia does both, and the short t erm regulation advantage wasn't what it was bought for.

in

Read the link. This isn't a "breakthrough technology" announcement but rath er a new technology moving into commercial application.

It's already delivering, albeit on a fairly small scale - the biggest unit listed on the Wikipedia page is a 60 MW.hour unit which has been in use in Japan since 2015 - half the capacity of the 128 MW.hour unit in South Aust ralia.

Elon Musk diverted a few of his car batteries to create that. The productio n line for vanadium flow cells only supplies the grid backup market, so it can't offer the same economies of scale yet.

The introduction of a new technology often involves creating the awareness that it exists, which is why the first stages of the introduction look lik e an exponential increase. There are going to be venture capitalists around working out when precisely they should start investing heavily to meet the incipient demand.

The "hydrogen economy" is in an even earlier stage of that process, when we get to hear more about it.

It depends entirely on the attitude of the operators of the grid.

The Australian operators seem find domestic solar input a nuisance, and don't pay enough to encourage it.

When I was a kid we used to hang our washing on clothes lines to get it dry.

It was tedious and time consuming. When it rained they got hung up inside the house, which was even more of a pain.

"Importance" really isn't the right word.

Win seems to get a useful return on his investment, and he's further away from the equator than anybody in Australia.

But you've got a Hill's hoist in the garden and have been using it since you were a kid. We live in a apartment, and aren't allowed to hang out our washing on the balcony.

Water isn't going to get to the contact surfaces with or without goo. A proper crimp and contact materials designed for the job are all that's needed, unless it's going in sea water.

I guess that depends on where you live. Some are forced to take the power without a surcharge. Even in your situation, making ice is really, really, inefficient. Worth it for a good cocktail, I suppose.

snipped-for-privacy@notreal.com wrote in news:simgve5839f0ifomoj4sem839ip27g0b1h@

You are only twenty years behind the times.

The people who sell them must be wrong. I'll tell them you said so.

The lithium ion batteries in South Australia do seem to be well beyond the

That kind of capacity is only a start when considering a winter high-pressure blocking event in the UK.

Maybe 10GWh GWh, and it starts to become relevant. "Rationale": unexpectedly lose a 2GW second primary plant and need to keep supplies going for several days.

Agreed.

It is less clear that our dysfunctional "pure" energy market will bother to invest. It is quite likely that they will "do a Ford Pinto" and decide it isn't worth /their/ while paying upfront to prevent it. They may decide to take profits and risk being excluded after an event.

Yes, our "pure" market is dysfunctional.

I could hang my washing out, but I can't be bothered; I hang it up indoors :)

That's not for everybody, but it is sufficient to demonstrate that a drying machine is less beneficial than a washing machine.

The question wasn't whether a tumble dryer is all that beneficial, but rather whether people would like to be able to use one when the sun isn't shining on their solar cells.

Modern civilisation does supply a lot of necessities, but it also supplies a lot more minor conveniences. Rank ordering them may be a useful exercise, but once you've started doing it you are into austerity, which isn't all that marketable.

As the Brexiteers are gong to find out.

You're *always* wrong, AlwaysWrong. Metallurgy hasn't changed much in

Sure, they're sold. I've seen them with telco connectors, mostly because the crap that's sold as wire. You never know what you're getting. Auto manufacturers have a lot more control over their materials and connectors. A properly made crimp is better than solder.