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The Remarkable Progress of Renewable Energy

Wouldn't the amount of energy required to make the artifical diamond negate any possible benefits?
It's not particularly expensive to make thin layers of diamond by Chemical Vapour Deposition (CVD), which is the method used at Bristol University.

Don't tell de Beers, but you can use CVD to make extremely high quality gems at very low cost too. Such gems are sold as "Created Diamonds".
 
May I hijack the thread to ask a question which has long baffled me?
Wouldn't the amount of energy required to make the artifical diamond negate any possible benefits?
It's not particularly expensive to make thin layers of diamond by Chemical Vapour Deposition (CVD), which is the method used at Bristol University.

Don't tell de Beers, but you can use CVD to make extremely high quality gems at very low cost too. Such gems are sold as "Created Diamonds".
How do experts distinguish "created diamonds" from "the real things"? Are the former TOO perfect?

And how in Heck is there still a market for "real" diamonds?? I suppose it is the high price which creates the incentive to purchase; could an artificial diamond creator appeal to some buyers by bragging that they charge even more than De Beers?
 
May I hijack the thread to ask a question which has long baffled me?
Wouldn't the amount of energy required to make the artifical diamond negate any possible benefits?
It's not particularly expensive to make thin layers of diamond by Chemical Vapour Deposition (CVD), which is the method used at Bristol University.

Don't tell de Beers, but you can use CVD to make extremely high quality gems at very low cost too. Such gems are sold as "Created Diamonds".
How do experts distinguish "created diamonds" from "the real things"? Are the former TOO perfect?
Yup. The standard tests (which measure thermal conductivity) can't separate the two, but "advanced" tests will spot the lack of flaws and trace impurities - these tests can tell you which region, or even which mine, a natural stone came from. A "created" diamond lacks those markers, though I imagine you could introduce those impurities if you wanted to.
And how in Heck is there still a market for "real" diamonds??
Because de Beers have successfully persuaded women that they "deserve" a "real" diamond.
I suppose it is the high price which creates the incentive to purchase; could an artificial diamond creator appeal to some buyers by bragging that they charge even more than De Beers?
They could try, but de Beers have already got the big emotional hook in their real/fake dichotomy.

It's completely irrational, so I guess it's a circumstance ideally suited to weddings and matrimony. After all, if you buy a cake, it costs $X, but if it is a wedding cake, it's $10X. It's the same cake. Blind tasters could never tell the two apart. But "wedding" means "multiply the price by ten".
 
Yup. The standard tests (which measure thermal conductivity) can't separate the two, but "advanced" tests will spot the lack of flaws and trace impurities - these tests can tell you which region, or even which mine, a natural stone came from. A "created" diamond lacks those markers, though I imagine you could introduce those impurities if you wanted to.
My understanding is that the real thing has larger crystals, also. But this is not easy to determine.
And how in Heck is there still a market for "real" diamonds??
Because de Beers have successfully persuaded women that they "deserve" a "real" diamond.
Did I marry a heretic? She does not want such stuff! I would be very much in the doghouse for buying her jewelry or flowers.
I suppose it is the high price which creates the incentive to purchase; could an artificial diamond creator appeal to some buyers by bragging that they charge even more than De Beers?
They could try, but de Beers have already got the big emotional hook in their real/fake dichotomy.

It's completely irrational, so I guess it's a circumstance ideally suited to weddings and matrimony. After all, if you buy a cake, it costs $X, but if it is a wedding cake, it's $10X. It's the same cake. Blind tasters could never tell the two apart. But "wedding" means "multiply the price by ten".
Diamonds are an emotional hook, period.
 
The industrial diamond market is multi billions.

You can go online and buy diamond saws.

I always thought the diamond cartels to some degree controlled the supply to keep prices high for the jewelry market.

The difference between lab grown gem quality diamonds and nartural diamonds appears to be uniqueness.

To me the value of diamond jewelry has always been mostly hype.
 
The industrial diamond market is multi billions.

You can go online and buy diamond saws.
Yup, but note that the "diamonds" in them are tiny, not marketable for jewelry.
Yeah, industrial diamonds used for abrasives and cutting tools are basically just diamond dust, and can be made very cheaply. Heat and pressure applied to carbon results in diamonds; If you want the crystals to grow big enough to be useful for jewellery, you need to take this to extremes, and sustain those conditions for a LONG time. But for making teeny-tiny diamonds to harden the edge of a saw-blade, a simple hydraulic press will do,
 
The industrial diamond market is multi billions.

You can go online and buy diamond saws.
Yup, but note that the "diamonds" in them are tiny, not marketable for jewelry.
Yeah, industrial diamonds used for abrasives and cutting tools are basically just diamond dust, and can be made very cheaply. Heat and pressure applied to carbon results in diamonds; If you want the crystals to grow big enough to be useful for jewellery, you need to take this to extremes, and sustain those conditions for a LONG time. But for making teeny-tiny diamonds to harden the edge of a saw-blade, a simple hydraulic press will do,
And I ruined my saw blade hitting a large nail buried in a piece of wood on Sat. Time for the new diamond dust.
 
The industrial diamond market is multi billions.

You can go online and buy diamond saws.
Yup, but note that the "diamonds" in them are tiny, not marketable for jewelry.
Yeah, industrial diamonds used for abrasives and cutting tools are basically just diamond dust, and can be made very cheaply. Heat and pressure applied to carbon results in diamonds; If you want the crystals to grow big enough to be useful for jewellery, you need to take this to extremes, and sustain those conditions for a LONG time. But for making teeny-tiny diamonds to harden the edge of a saw-blade, a simple hydraulic press will do,
Something talking about explosions, (might be Mythbusters-related??), they had set off a big boom and the expert was saying there were diamonds created by the boom.
 
The industrial diamond market is multi billions.

You can go online and buy diamond saws.
Yup, but note that the "diamonds" in them are tiny, not marketable for jewelry.
Yeah, industrial diamonds used for abrasives and cutting tools are basically just diamond dust, and can be made very cheaply. Heat and pressure applied to carbon results in diamonds; If you want the crystals to grow big enough to be useful for jewellery, you need to take this to extremes, and sustain those conditions for a LONG time. But for making teeny-tiny diamonds to harden the edge of a saw-blade, a simple hydraulic press will do,
Something talking about explosions, (might be Mythbusters-related??), they had set off a big boom and the expert was saying there were diamonds created by the boom.
Yeah, Mythbusters demonstrated the making of diamonds with explosives. It's cheap and easy, but using a hydraulic press avoids having to scour the landscape for your explosion-scattered end-product.
 
The industrial diamond market is multi billions.

You can go online and buy diamond saws.
Yup, but note that the "diamonds" in them are tiny, not marketable for jewelry.
Yeah, industrial diamonds used for abrasives and cutting tools are basically just diamond dust, and can be made very cheaply. Heat and pressure applied to carbon results in diamonds; If you want the crystals to grow big enough to be useful for jewellery, you need to take this to extremes, and sustain those conditions for a LONG time. But for making teeny-tiny diamonds to harden the edge of a saw-blade, a simple hydraulic press will do,
Something talking about explosions, (might be Mythbusters-related??), they had set off a big boom and the expert was saying there were diamonds created by the boom.
Yeah, Mythbusters demonstrated the making of diamonds with explosives. It's cheap and easy, but using a hydraulic press avoids having to scour the landscape for your explosion-scattered end-product.
I mean you can make diamonds from Tequila, too...
 
It's still a bad idea, because it solves non-problems at great expense, while ignoring the real constraint.

Assuming that one of the goals is to minimise the burning of fossil fuels, and that nuclear power cannot be used due to the powerful idiot lobby, we need to look at what constrains the use of more solar power in California.

That constraint is NOT a lack of PV panels. It is NOT a lack of inexpensive places to install PV panels. The constraint is a lack of storage for solar power generated during daylight hours, so that nightime fossil fuel use can be reduced. Solar panels covering canals will not help in any way with that problem.

The other goal, reducing water loss from evaporation, might be well served by this project, but given that there are plenty of FAR less expensive options that could be used to cover the canals, many of which would be more effective barriers to evaporative losses; And given that even those much cheaper options have historically been considered too expensive - that is, the cost of the covering is far greater than the price of the water thus saved - this seems like a bad idea.

Using solar panels might be imagined to reduce the net cost, because the electricity they generate can be sold. But California wholesale energy prices during periods of strong insolation are negative, without government intervention in electricity markets, so while it might be possible to profit from installing solar panels in CA, those profits come not from selling electricity, but from fleecing taxpayers by making them pay for electricity of zero (or less than zero) value.

Solar canals may be a no-brainer, but when we bring in even a small amount of brain, the illusion that they are a good idea evaporates - unless you are a person who thinks that the idea of getting rich by defrauding taxpayers through schemes that cannot achieve their stated purpose, is a good one. Certainly, many people do think that.
 
Not really. That "free power" is just the government paying the electricity bill for consumers, rather than them paying it themselves - so it is taxpayer money being given to power companies.

It isn't a totally awful policy, in that it partly redresses the current situation, whereby taxpayers subsidise wealthy homeowners who can afford solar, at the expense of the (mostly poorer) non-homeowners, and those without the capital to take advantage of the subsidy.

But it's "not awful" by accident, rather than by design. And it won't lower the net amount that consumers pay for electricity, it will probably increase that amount - but will hide the increase in taxes, and possibly by placing the non-tax portion of the increase into the bills of those who already have solar power installed. The exact losers will be (intentionally) hard to determine, but they will nevertheless at best lose as much as the winners from this policy gain, and after bureaucratic overhead and some 'skimming' by the power companies, the losers will likely lose somewhat more than the winners gain.

Australian electricity markets are an utter basket case, and prices are inevitably going to have to rise, sharply, if we are to avoid widespread blackouts; The government can try to hide the price rise by putting it on taxes rather than power bills, but that won't alter the fact that Australians will end up paying, one way or another, for the long term neglect of our power grid, and for our insane political insistence on doing the physically impossible - you cannot have a zero emissions electricity supply in a developed nation without either nuclear power, or massive hydroelectric schemes, or new storage technology that still doesn't exist (and is unlikely to be physically possible to ever build); and Australia cannot massively increase hydropower for geographic and climatalogical reasons.

This is what happens when you ask politicians to solve engineering problems; They ignore any engineer who says it's impossible to meet all of their policy goals, and then pass laws saying that those policy goals MUST all be met.

Sadly, you cannot amend the laws of physics by a vote in Canberra.

Electricity must be affordable, available 24x7 on demand, generate zero net carbon dioxide emissions, and not be generated from nuclear fission. That's the law. It's also physically impossible.

The solution is probably to reverse the privatisation of electricity transmission and supply infrastructure, and to accept that grid construction and maintenance should be funded through general revenue (ie income tax); Embark on a massive project to repair and rebuild the grid at taxpayer expense, raising income tax rates to pay for it; Repeal the laws against nuclear power generation; Pass laws against the mining of coal; And build several dozen nuclear powerplants, mostly close to Sydney, Melbourne, Brisbane, and Perth.

None of these things could even be contemplated by a major Australian political party today, without causing the electoral massacre of that party at the next poll, as Peter Dutton recently demonstrated.

So we will have a lot of expense, and or widespread blackouts, in the next decade or so. Eventually, things might get bad enough to persude the voters to stop demanding the impossible, but don't hold your breath.
 
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Comparison of energy strategies of China and Australia can be found here:

China is installing the wind and solar equivalent of five large nuclear power stations per week

China is also leading the way in transmission:

China's UHV project: The world-leading "Electricity Highway"
China is also building a lot of new nuclear power plants, and has over 60GW of operational nuclear power stations - that's enough to supply Australia's entire electricity demand twice over.
 
^From the ABC article:

[China's] installing at least 10 gigawatts of wind and solar generation capacity every fortnight.

By comparison, experts have said the Coalition's plan to build seven nuclear power plants would add fewer than 10GW of generation capacity to the grid sometime after 2035....

Instead of nuclear, solar is now intended to be the foundation of China's new electricity generation system.

Authorities have steadily downgraded plans for nuclear to dominate China's energy generation. At present, the goal is 18 per cent of generation by 2060.

China installed 1GW of nuclear last year, compared to 300GW of solar and wind, Mr Buckley said.

"That says they're all in on renewables.

"They had grand plans for nuclear to be massive but they're behind on nuclear by a decade and five years ahead of schedule on solar and wind."

China has decided on solar over nuclear.
 
^From the ABC article:

[China's] installing at least 10 gigawatts of wind and solar generation capacity every fortnight.

By comparison, experts have said the Coalition's plan to build seven nuclear power plants would add fewer than 10GW of generation capacity to the grid sometime after 2035....

Instead of nuclear, solar is now intended to be the foundation of China's new electricity generation system.

Authorities have steadily downgraded plans for nuclear to dominate China's energy generation. At present, the goal is 18 per cent of generation by 2060.

China installed 1GW of nuclear last year, compared to 300GW of solar and wind, Mr Buckley said.

"That says they're all in on renewables.

"They had grand plans for nuclear to be massive but they're behind on nuclear by a decade and five years ahead of schedule on solar and wind."

China has decided on solar over nuclear.
No, you just don't understand capacity factors.

10GW of wind and solar capacity is roughly equal to 2GW of nuclear capacity.

And China is not a fully industrialised nation. Solar and wind are a distinct improvement over no electricity at all. They aren't good for running cities whose populations expect 24x7 electricity, but they are great for rural Chinese villages whose populations have little or no electricity at any time.

China is in no way comparable to Australia in terms of electricity markets. The populations are wildly different; The demands and expectations are wildly different; The political systems are wildly different.

And CEF are a lobby group, and their website is in both English and Chinese, so colour me skeptical about the value of Mr Buckley's opinions on anything.
 
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^According to the article, last year China installed 300GW of solar and wind and 1GW of nuclear. Divide 300 by five to establish the equivalent capacity, and China has produced 60 times more capacity in solar and wind than nuclear in one year. Also, ultra high transmission mitigates limitations associated with sunlight and wind.
 
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