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Old 09-01-2018, 08:08 PM   #2681 (permalink)
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Quote:
Originally Posted by aerohead View Post
No,you don't sound like,nor are you an idiot for asking.It would be worse if you didn't ask.
I met a family in Kingman,Arizona which lived off the grid,on 12-VDC,and 120-VDC power.
They had a rather large,home-built 120-VDC wind generator which they used to charge a series-connected group of batteries.
Some of their lights and appliances were 12-VDC,and all the shop power tools had brush-type 120-V motors.
They were mentioned in the newspaper after a storm had knocked out the city's power,and this family's home was the only one 'lit up'.
If a photovoltaic array were located such that there couldn't be any stray shading,the series connecting wouldn't be a problem.
Converting a voltage from DC to AC would require some type of oscillator to produce the 50-or 60 Hertz necessary,and some sort of power conditioning to create a sine wave (motors need this especially).A square-wave and some synthesized sine-wave inverters will not produce an AC current of sufficient quality to run some ac motors.
The only people buying or still using square or modified sine wave just don't know what they are doing.
Pure sine inverters have come down a lot in price recently. I remember when they were over $1 per watt, now you get name brand ones for around 20 cents a watt.
Pure sine wave is all I use any more.

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Last edited by oil pan 4; 09-01-2018 at 08:44 PM..
 
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Old 09-01-2018, 08:44 PM   #2682 (permalink)
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Quote:
Originally Posted by aerohead View Post
Some economists appear to be at ease dismissing certain realities from their algorithms,output,and predictions,while real people are forced pay as a consequence of the economists negligence.
Economists may have a handle on 'price',but they have a track record of completely missing the boat on 'cost.'
As far as the environment is concerned,and policy,I'd leave it in the hands of the scientists.
We wouldn't be in the mess we're in if certain economists,had been locked away in a cage somewhere,where they couldn't hurt anyone.
Well if we are going to play the "true cost of fossil fuels power" game then here is something to consider.
About 40% of Americans live pay check to pay check or on fixed income.
So called "green energy" depending on the scope of use is going to at least double people's energy costs and has the potential to increase the price of everything substantially.
This will in turn lower these peoples standard of living. Now they have to fork out an extra $100 per month for their energy bills, which to these people is a lot of money.
So now they are forced to not eat as healthy, maybe they can't afford all their prescribed meds, now they can't afford to go to the dentist or Dr, can't afford to drive a safe modern car so they drive an old piece of junk, can't afford to heat their home during the winter, have to go with the cheaper health insurance plan or no plan at all.
These people aren't going to be helped by air that is ever so slightly cleaner.

So don't assume puting up solar panels is is going to be like waving a magic wond that is automatically going to make everyones lives better.
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Old 09-01-2018, 11:36 PM   #2683 (permalink)
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More greenwashing ???

Probably :



Calling all debunkers... calling all debunkers...

I don't remamber about one single true breakthrough in my life. Great breakthroughs was things from old days, like penicilin, jet engine, nuclear fusion, microchip creation. Today despite advances, we are in an era of scratchthroughs and not breakthroughts.


PS: I will shoot anyone who tells me LCD TV & LCD monitors it's a breakthrough.

Last edited by All Darc; 09-01-2018 at 11:47 PM..
 
Old 09-02-2018, 12:23 AM   #2684 (permalink)
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I still remember Sputnik.
Then lately, there's COB LEDs.
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Old 09-02-2018, 12:56 AM   #2685 (permalink)
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9 minutes at 150 miles of range.
Probably about 38kwh worth of power.
Needs to charge at about 230kw.
That would require a 500 amp 480v connection, a 4,160v connection would more practical.
The battery should be at least 50kwh to take that much charge, 70kwh preferably or the bigger the better.
At fairly standard 400 volt pack voltage the pack would be taking 575 amps. Higher voltage packs would be better.

I'm not going to say it's impossible because those are very possible numbers.
My leaf can be charged at 48kw, that's enough to pick up 2 to 3 miles per minute and that's 2008 to 2009 technology.

I'm not a debunker I'm a critical realist.
Don't BS someone who has a degree on the subject, that's all I ask.
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1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.

Last edited by oil pan 4; 09-02-2018 at 03:13 AM..
 
Old 09-02-2018, 03:52 PM   #2686 (permalink)
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COB LEDs a breakthrough ???
Are you kidding me???



Ohh, humanity it's new whole thing after this new flashlight...

The worst think humanity did for LEDs wa to put it's name to TVs, like the TV screen pixels was made LEDs, but in reality was still the same old disgusting LCD panel, and LEDs a simple backlight. I would like to hang who had this idea. LED TVs.. all garbage like all LCD TVs, since both are just LCD, and LCD it's abominabler and disgusting.


One science breakthrough, not exactly but in the literal meaning of words, it's the use of tilapia fish skin to vagina reconstruction, leading to tissue regeneration along the fish-skin scafold, instead of the old skin grafts (using patient skin) in tunnel shape on traditional technic. Break through the channel...

https://www.thesun.co.uk/video/fabul...als-in-brazil/

Quote:
Originally Posted by freebeard View Post
I still remember Sputnik.
Then lately, there's COB LEDs.

Last edited by All Darc; 09-02-2018 at 04:16 PM..
 
Old 09-02-2018, 04:26 PM   #2687 (permalink)
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Blackouts everywhere if a few people start charging such kind of vehicles at same time.

Man, I once tried a device that was for cleaning and desinfect using hight temperature of water vapor, and the electric need was so trong that melted the power plug on the wall.



I imagine the water plug and energy cable necessary for such power current to charge a battery so fast. One accident and it would vaporize the owner :




Try to imagine 1 minute for 700km range, and not 9 minutes for 150km range.

I really like to believe it was true, but everytime I saw some news with suposed breakthroughs, sounding too good to be true, in end up being a houx.
In medical treatments it's always that way, much talk in beginning and too much bu..sh..t in the end. Everytime.

What about the sodium battery with many times more energy density than lithim? I bet it will end up in hoax too.

Quote:
Originally Posted by oil pan 4 View Post
9 minutes at 150 miles of range.
Probably about 38kwh worth of power.
Needs to charge at about 230kw.
That would require a 500 amp 480v connection, a 4,160v connection would more practical.
The battery should be at least 50kwh to take that much charge, 70kwh preferably or the bigger the better.
At fairly standard 400 volt pack voltage the pack would be taking 575 amps. Higher voltage packs would be better.

I'm not going to say it's impossible because those are very possible numbers.
My leaf can be charged at 48kw, that's enough to pick up 2 to 3 miles per minute and that's 2008 to 2009 technology.

I'm not a debunker I'm a critical realist.
Don't BS someone who has a degree on the subject, that's all I ask.

Last edited by All Darc; 09-02-2018 at 05:19 PM..
 
Old 09-02-2018, 05:56 PM   #2688 (permalink)
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Charging at over 300A requires liquid cooling of the conntectors and cables. Porsche has the right idea with a new new type 4 standard using a split pack. Series at 800V for charging. And parallel at 400V while driving.
 
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Old 09-02-2018, 06:33 PM   #2689 (permalink)
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Ok, let's put charging time by side, just for a while.

What about power density?
Do you believe they really got it? Did he really reached very high energy density for these batteries?

700 miles it's really a lot.

Compare to gasoline car's range :

Toyota Prius – 12 gallon tank, 50 mpg = 600 miles
Honda Civic Hybrid – 12 gallon tank, 40 mpg = 480 miles
Ford Fusion – 17 gallon tank, 36 mpg = 600 miles
Volkswagen Golf – 14 gallon tank, 35 mpg = 490 miles
Chevy Cruze – 13 gallon tank, 35 mpg = 455 miles

We don't know the size of the battery of this car, since ellectric cars have huge batteries, tooking more space than gasoline tanks. But even so it is, (in case it's really true) or sounds incredible.

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Old 09-02-2018, 07:15 PM   #2690 (permalink)
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I found more information. Their battery have 2.5x the energy density of conventional lithium batteries. And suposed 1/3 of the cost.

https://www.nextbigfuture.com/2017/1...-the-cost.html

Cost per KW or cost per unity of same size/weight?
Probably cost per kw.

Strange, cause solid state batteries are told to be very expensive to manufacture and not positively affected in cost by mass production.

 
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