I'm sorry, but I see absolutely no benefit to an electic car that plugs into a COAL based power system for power. Just because you do not see the pollution as you drive does not make your new car virtuous nor is it carbon neutral.
Evidently out of sight out of mind is acceptable to the deluded.
Just my opinion.
Interesting article. The first one I've read that tells it like it really is. Which is to say, as fuel economy of regular cars goes up and up, the advantages of making the vehicle a hybrid go down. Especially if you introduce schemes like engine stop-start. A 1 KWh battery pack is what you'd see in a "mild hybrid," if that.
This article is also the first I saw that showed the diminishing returns, when you increase fuel economy in the range beyond 40 or so mpg, even for someone who drives a reasonably high number of miles per year.
I had thought that hybrid vehicles would be the only choice of vehicle, in a few years. But I don't think that's where the trend line is pointing, in fact. For privately owned vehicles. Car companies seem more into going to those high mileage figures without the hybrid tech. But I agree with the article, commercial applications are an entirely different matter. Think of buses, in particular for local mass transit, delivery vans and trucks, garbage trucks, and the like.
1. Is not using a drop of foreign oil a benefit?
2. Even with 100% of the electricity coming from coal, an EV is still cleaner.
Why do you guys keep bringing out this tired old outdated and inaccurate argument???
NOT a fair point at all in my opinion....
This article talks only of the financial side of this issue.
It ignores the joy of driving a vehicle that is more than just a cramped up little eco-box with no acceleration.
It also ignores the desire to use less foreign oil, something patriotic consumers would be will to pay a little more for...
If price was the one and only factor, we would all be driving tiny little hatchbacks made in China and India...
Actually no, assuming you buy into the notion that CO2 generated by human beings is the cause of global climate change.
Coal produces more CO2 than gasoline, which in turn produces more CO2 than natural gas, for a given amount of heat output.
So generating electricity from a coal burning plant does not help, compared with a gasoline powered car, if you're talking about CO2 being a "pollutant."
This assumes that the coal burning, electricity generating, electricity storage in a battery, and the eventual conversion of that back to mechanical energy to move the car is not a more efficient process than just running an internal combustion engine. Which seems to be the case.
"I'm sorry, but I see absolutely no benefit to an electic car that plugs into a COAL based power system"
There is plenty of data out there on that. Generally, even the dirtiest US electricity still comes out ahead.
In places like China, where the electricity is even filthier, this is not the case.
ICEs are about 30 percent ewfficient optimistically, and perhaps 20 percent realistically. I would prefer some other scheme, like in-car reformer to convert a hydrocarbon fuel to H2, and then run a fuel cell and electric power train with the H2 produced on board.
But that's a separate discussion.
The fact remains, a coal-fired plant generating electricity for a battery EV becomes more polluting than using an ICE in the car. This has been published by many sources. Like:
"The problem with electric cars using coal to generate the electricity needed for batteries is the pollution that coal smokestacks produce. A report by Natural Resources Defense Council in USA Today shows that significant increases in soot and mercury will likely be the result of burning more coal. Soot is a breathing hazard, and mercury is toxic. Heavy coal states are not good areas to produce electric or hybrid cars, according to Howard Learner, executive director of the Environmental Law and Policy Center in the USA Today article.
"Another problem with plug-in electric vehicles is that they produce more sulfur dioxide and carbon dioxide than other vehicles do, according to a Minnesota Pollution Control Agency Study in the USA Today article. ..."
Blog Doing Math in FPGAs Tom Burke 24 comments For a recent project, I explored doing "real" (that is, non-integer) math on a Spartan 3 FPGA. FPGAs, by their nature, do integer math. That is, there's no floating-point ...