Comment Re:Plain solar panels cost less (Score 1) 268
Mirrors are a whole lot cheaper than PVs.
Flat mirrors, maybe
Which is what this thing uses.
Mirrors are a whole lot cheaper than PVs.
Flat mirrors, maybe
Which is what this thing uses.
They are doing some funny math to claim 80% efficiency, as that is almost double the current best efficiency achieved in a lab: https://en.wikipedia.org/wiki/...
And I'm pretty sure 80% efficiency is above the theoretical maximum too . . .
Nothing funny about it. This thing is combined heat and power system. You get electricity directly from the cells, and in keeping the cells cool, you get hot water suitable for running an absorption chiller and desalinating.
1.3KW per square metre is at the top of the atmosphere.
It's significantly less at ground level. You get about 1050W peak at high noon on a cloudless day at the equator and less as you go north or south from there.
But the book never killed anyone, it's the readers.
I dunno. Some of those big illuminated editions are heavy enough to cause serious damage if they fall off a shelf onto someone.
its just a simple idea I have always considered; loading electrical energy into physical potential energy by way of working against gravity. Maybe, instead, just run a big heavy chunk of metal up a notched pole? Then release it to spin a worm gear, to a large cog, then big generator as it slowly drops?
You'd still have the exact same issue with the amount of mass and/or height needed. Mass x height x 9.8m/s^2. For a kilowatt-hour of storage, mass x height needs to equal about 600,000. Gravity-based energy storage simply requires a lot of both for any worthwhile amount of energy.
Banks of batteries are expensive and take up a lot of space. You'd need to provide several megawatts for several hours. That would require hundreds of 85kWh car battery packs.
And they'll be producing several hundred thousand such packs annually once the factory is operational.
Also, it's going to be a 10 million square-foot facility, with a few hundred more empty acres around it. I don't think they'll be pressed for space.
Problem is that requires a lot of water, a lot of height, or both. Assuming 80% efficiency on your pump and generator, you'd need something on the order of 600,000 metre-litres of water per kilowatt hour of storage.
There are many encrypted ham standards, PSK31 WSPR, WSJT, MAP65, Hellscriber, etc, etc.
Umm, unless I am managing to completely misunderstand something, those are not encryption, those are simply digital signals rather than analog.
No-class-action clauses have held up, all the way to the Supreme Court. See AT&T Mobility v. Concepcion.
Doesn't Comcast have a "You're not allowed to file a class action suit against us. Hahahaha." clause in their contracts?
That's very much incorrect. It's treated as a deduction
Read the site.
If you paid or accrued foreign taxes to a foreign country on foreign source income and are subject to U.S. tax on the same income, you may be able to take either a credit or an itemized deduction for those taxes.
You're assuming it is always option 2 (acts as a deduction), and ignoring option 1 (acts as a credit).
Are you sure the US has sanctions on Turkey?
Had, yes. The USA had an arms embargo and miscellaneous other sanctions against Turkey from 1974 to 1980-ish, as a result of the Turkish invasion of Cyprus.
According to Tesla, it will have as much production capacity as all current li-ion battery factories combined.
The giga does have some meaning, as the factory has a planned production of 35 gigawatt-hours of batteries per year.
Does that include the Tegra Note tablet? The only bug of relevance I've found is the GPS is garbage and updates for it have been steady, with it sitting at Kitkat, with the announced intention to upgrade it to L when that comes out.
With your bare hands?!?