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the Chevy Volt (and other "plug-in" cars)

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nobo:

--- Quote from: Is it cold in here? on 24 Aug 2008, 13:14 ---A stationary power plant is more efficient than a gas engine

--- End quote ---

modern internal combustion engines = 25-30% efficiency
http://en.wikipedia.org/wiki/Engine_efficiency

Average Coal power plants = about 31% efficient
http://wiki.answers.com/Q/What_is_the_energy_efficiency_of_an_average_coal_powered_plant

Unless you have a coal gassification power plants those = around 50% efficient
http://www.fossil.energy.gov/programs/powersystems/gasification/index.html

KvP:
A short little article in Salon about the comparison of grid-dependent vs. combustion engine efficiency. It concludes that an entirely grid-dependent car (the Tesla roadster, in this case) drawing from coal plants is on average about as efficient as a Prius is now. A car drawing from natural gas power, however, is many times more efficient.

Adlan:
Many new technologies are on the horizion, to make electric cars feasible, However, when considering the carbon foot print of a car (if thats why you want a hybrid), you have to consider more than the effeicency. The cost of production of an Electric Car, in carbon, other green house gasses, and other pollutants, is higher than that of an ordinary car, or better, buying a seconded hand car. Reduce Reuse Recycle. Particularly the Mining and Extraction of chemicals for the batteries.

Has anyone ever seen a Laptop Lithium Ion battery explode? it does happen, at a not significant rate. Imagine what will happen when a Car Battery like that goes bang?

High Capatitance Capacitors are currently beening worked on, they look quite promising.

But what I think will actually be used is something like this: http://www.timesonline.co.uk/tol/news/environment/article4133668.ece


See, Oil (in one of it's refined forms) is a massivly useful fuel. it's compact, easy to store, relitivly safe, energy dense and we all ready have billions of cars that run on it.

The best thing about Biodesil from Bacteria or Algae is it can, if done right, be carbon negative.

KvP:
thread resurrection.

Looks like GM is teetering on a precipice and the Volt could be vaporware.

According to yon New York Times, however, China is unveiling a plan to become the world's leading producer of hybrid and electric cars. Sort of surprising no? Is this a good thing? Is it a bad thing?

Chesire Cat:
Well its certainly a thing to say the least. 

I still say Fuel Cells should be the future of clean renewable cars

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