Skip to comments.Electric cars: night-time charging better - study
Posted on 04/18/2011 9:10:54 PM PDT by NormsRevenge
PARIS (AFP) Charging electric cars at night eases a smog problem caused by fossil-fuel plants which provide the power for these vehicles, researchers reported on Tuesday.
Plug-in cars are viewed as a key tool in the fight for a cleaner planet as they do not emit tailpipe pollution when they run on electricity.
But they contribute indirectly to pollution, as well as global warming, if their electricity comes from a power station that runs on coal, oil or gas.
In a study published in a British journal, scientists in the United States simulated the local impact from "plug-in hybrid electric vehicles," or PHEVs, which are cars that can switch from battery power to petrol.
Their computer model was based on predictions for 2018 of emissions of nitrogen oxides, the basic ingredient for ground-level ozone, in four major cities in Texas: Dallas/Forth Worth, Houston, Austin and San Antonio.
Power generation for this grid in 2009 was provided by gas (46 percent), coal (35 percent), nuclear (13 percent) and wind (4.5 percent).
The study compared likely pollution levels when 20 percent of mileage in the region was carried out either by PHEVs or by vehicles that were only petrol-powered.
Regardless of the scenario, ozone pollution improved when PHVs were used, because they did not emit nitrogen oxides.
As for when PHEVs should be recharged, the paper found it was smarter to plug in the vehicle at night.
Extra demand from fossil-fuel power stations at night did cause levels of nitrogen oxides to rise compared to the typically shorter recharging periods in daytime.
But much of the gas emitted at night time had dissipated by daybreak. This eased the smog problem by a small but detectable margin.
(Excerpt) Read more at news.yahoo.com ...
Libs obviously don’t understand Physics. They must think that the electricity that powers their Chevy Volt plug-in charger appears there by magic.
ICE powered automobiles have gotten so clean in the last 30 years that a lot of the original justification for EVs is gone. The main justification now is to reduce reliance on foreign oil. But that requires mining, drilling and recovering domestic oil, coal and uranium, something the envirokooks are unable to do. The wind doesn’t blow at night and the sun sure doesn’t shine at night, so, if you want to charge your EVs at night, you need enormous and costly energy storage systems. The envirokooks won’t let you build pumped hydro storage and there are very few locations where underground compressed air storage is practical.
The only solution is to ride your bicycle or walk. Or maybe take the high speed train.
“a smog problem caused by fossil-fuel plants which provide the power for these vehicles”
Whaa??? Liberal arrogance and stupidity didn’t take this in to account with their coal-powered cars?
Not that I would drive a golf cart to work.
Naw, they think that electricity comes from the same unicorns that poop those pretty skittles!
Bad enough they’ve got to think about coal being burned to charge their car, but also nuke plants!
And burns garages down during the daytime.
Ugh, it IS getting late:
“Emissions from a conventional vehicle is bad...” should be “Emissions from a conventional vehicle are bad “
None of those choices are an option for folks living in the remote, vast stretches of the West.
So true. That's why I show them these:
I'll gladly follow the EPA employees to work in January, here. Let'em break trail at -30F.
Or maybe take the high speed train.
As soon as it gets here and goes where I need to. (I should live so long!)
When your electric car bursts into flames, you got a great personal toxic waste dump. That’s real good for the environment.
Sell your house. Sell your anachronistic gasoline powered vehicles. Move to a dense urban area. Find a new job. Live in a high-rise next to the RR tracks. Resistance is futile. Your future has been ordained.
Do you have a more 'enlightened' area? I'm just not dense enough to move to an urban area.
Nope. They’ll never find me.
In Alfred Bester's The Stars My Destination the protagonist, Gulliver Foyle, "drove" to a "conspicuous consumption party", by having a track laying machine moving ahead of his private (steam!) locomotive & luxury train car.
It was followed by another machine & crew that took up the tracks & ties behind him, to be moved ahead and relaid, until he reached his destnation.
Not exactly "high speed" rail, but it does take you where and when you want to go. ;-')
You "might" want to re-examine that statement. I can guaran-damn-tee you that the wind most decidedly DOES "blow at night". Weather fronts don't give a damn about day/night.
I've spent many a night listening to the wind howl outside as a strong front passes, and woken in the morning to news reports of trees down on roads, houses, and other wind-storm related damage.
Very little electricity is produced using oil. Most generation is done using coal and natural gas, with coal decreasing and natural gas increasing.
Why not just get a small trailer that has a diesel generator that will charge the battery while on the road?
Additionally, smog creation is a chemical reaction influenced by temperature and pressure. For each 10 degrees C you raise the temperature, you double the rate of a chemical reaction. Everything else being equal, if today is 10 degrees C warmer than yesterday, there will be twice as much smog.
They really believe that too. I had a liberal tell me that the electricity cones from electric lines. They have no clue that there has to be something putting the juice INTO the lines.
Produkts ov de US schreul sistimz.
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