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Old 11-06-2019, 02:43 PM   #21 (permalink)
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buffer

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Originally Posted by redpoint5 View Post
I'm always circling back to the idea of V2G (vehicle to grid) storage schemes to help solve the problem of intermittency of power generation. Whenever you can kill 2 stones with 1 bird, it has my interest.

I wonder how much of a buffer would be reasonably available if 50% of households had EVs connected to the grid? Average household consumption rate is 1.2 kW. EVs could reasonably be expected to output 6-9 kW back to the grid, so they could support 6 households for every connected EV, and that's assuming the need to provide 100% of the electrical needs instead of some "make up" portion.
A friend is only going to attempt 1-kW (synthesized sign-wave inverter)for a power outage.It will allow for refrigerated food preservation,modest LED lighting,and communications,plus potable water pressurization from above-ground storage.
When I was 12-volt,I never knew when power outages happened.There were a few of us,and we just rocked along on without a hiccup.
By the way,complete night time grid failures are a great opportunity for astronomy.You can see really dark skies when urban light bubbles croak.

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Old 11-06-2019, 02:51 PM   #22 (permalink)
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I never did understand street lights, especially highway ones. It makes visibility worse while driving, especially when it's foggy out, or the windshield is fogged up.

I've grown up in the sticks, so bright stars are always accessible to me, except for the 1/2 of the time that clouds are in the way.
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Old 11-06-2019, 03:25 PM   #23 (permalink)
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There's an 'accuracy' to their comment,when taken in it's proper context.
That's only one reason why 'blowing smoke' was in single quotes.

In the PNW we don't have to beat on the ground to get fuel and burn it. The advantage to electricity is that it's fungible. One source can be substituted for another.

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A friend is only going to attempt 1-kW (synthesized sign-wave inverter)for a power outage.
Scott Adams picked up the phone and called Tesla. OTOH Jehu Garcia has shown a $500 substitute:
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Old 11-06-2019, 03:41 PM   #24 (permalink)
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street lights

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Originally Posted by redpoint5 View Post
I never did understand street lights, especially highway ones. It makes visibility worse while driving, especially when it's foggy out, or the windshield is fogged up.

I've grown up in the sticks, so bright stars are always accessible to me, except for the 1/2 of the time that clouds are in the way.
It appears that illumination engineers are oblivious to the fact that the human eye is a dynamic organ,which can transition from photopic vision to scotopic vision,and a 30-minute chemical reaction takes place within the retina.
Coming from fully dark-adapted night vision upon a 'glare bomb',or visa versa, can actually create danger to a motorist.
The engineers also don't seem to appreciate that some of the new headlights,which are skewed to the blue end of the spectrum can destroy an onlookers vision,while being great for those behind the wheel of the offending vehicle.Morons! Pedants.
Perhaps the DOT accepts only job applications from those who graduate bottom of the class.
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Old 11-06-2019, 04:26 PM   #25 (permalink)
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1.45-TWh= 9.6-million phevs

with a back-of-the-envelope calculation,
the anticipated 2028,1.45 TWh worth of battery production, would support the manufacture of 9,100,000 plug-in hybrid cars/year, with a range of 47-miles;which by the old EV1 metric,would satisfy the range needs of 90% of urban commuters.
As of December,2018,the global population for EVs was 5.1-million.
300-million electric two-and three-wheelers.
460,000 electric buses.
5-million low speed EVs
The EIA believes we'll see EV ownership at 125-million EVs by 2030,and a pathway to 220-million EVs under a more aggressive 'climate change'-fighting scenario.
2050 is a date tossed around,after which we ought to be carbon-zero if we're to dodge a bullet.

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Last edited by aerohead; 11-09-2019 at 04:17 PM.. Reason: number correction
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