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Pearson Fuels Message Boards Alternative Fuel Discussions and Opinion
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KeepitClean Guest
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Posted: Wed Jul 04, 2007 6:30 am Post subject: Don't Electric Cars pollute at the Power Plants- the Facts |
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These fact below were borrowed from (www.evworld.com)
[b]Electric Cars and Coal Power Plants[/b]
Yes, electric cars have no tailpipe emissions. They produce no local pollution or carbon dioxide, but they aren't entirely pollution-free, especially if they are recharged from an electric power grid that burns significant quantities of fossil fuels like coal.
So, are they any better than a normal gasoline car? Absolutely!!!
For starters, in terms of carbon dioxide emissions, they generate a fraction that expelled by a normal gasoline engine car. For every gallon of gasoline burned, approximately 22 pounds of CO2, an important global warming gas, are created. If a car gets 25 miles a gallon it will emit 22 pounds of carbon dioxide over that distance, as well as other pollutants. By comparison, an electric car may travel the same distance consuming 5 kilowatt hours (kWh) of electric power at a rate of 200 watt hours/mile. Assuming the local grid is 100% coal-fired, roughly 5 lbs of coal would be consumed to create that 5kWh. Depending on the grade and carbon content of the coal, one kilowatt hour creates approximately 1.4 pounds of CO2. That's 7 pounds of CO2 vs. 22 pounds to travel the same 25 miles. But recall that the power grid isn't entirely coal-fired; it includes hydroelectric, natural gas, nuclear and a small, but growing segment of renewables.
But what about other pollutants, aren't today's cars significantly cleaner? Yes they are and getting more so all the time, which is good. But so is the power grid, at least in terms of many criteria pollutants, if not CO2. And as more wind and solar electric power is added to the grid, and older, more polluting power plants are decommissioned, the grid can get cleaner, though it will still take citizen awareness and pressure, especially in the light of the fact that hundreds of coal-fired plants plan to be built around the world in the come decades, to ensure the very best technology is used, including carbon sequestration if we plan to continue to utilize coal. |
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calieigh Newbie
Joined: 13 Jan 2010 Posts: 3
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Posted: Tue Jan 19, 2010 1:19 am Post subject: |
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Hello,
Electric cars create less pollution than gasoline-powered cars, so they are an environmentally friendly alternative to gasoline-powered vehicles.Vehicles powered by fuel cells are electric cars, and fuel cells are getting a lot of attention right now in the news.
1. The gasoline engine is replaced by an electric motor.
2. The electric motor gets its power from a controller.
3. The controller gets its power from an array of rechargeable batteries. _________________ buy r4 |
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