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View Diary: Two Technologies That Could End the Energy Crisis (Video) (52 comments)

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  •  It's actually a lot better than that (0+ / 0-)

    A single 6 volt golf car battery will store aboue 1.5 kwh. Electric vehicles such as this one which can travel 65 miles on 21.6 kwh are a good example. That figure comes from the standard calculation of 225ah * 6 volts for the Trojan T105 batteries mutiplied by 16 for the 16 batteries this vehicle uses and divided by 1000 gives you the total kilowatt hours of 21.6.

    Granted this is not exactly a family sedan from an American perspective, but the practical extrapolation shows that it should be quite feasible to have a reasonable range on 52 kwh. Particularly considering that the Ultracapacitor weighs 300-400 lbs compared to over 1000 for lead acid batteries.

    We may not be able to have our cake and eat it too in terms of vehicle size and room, but if you spend any time at all in Europe, Latin America, or Asia, you quickly see that almost no one drives the kind of giant vehicles we do here. Even a typical midsized family sedan here would be considered enormous elsewhere.

    A regime is at it's most dangerous when it believes it's own propaganda...but that is also when it is most vulnerable.

    by MaverickModerate on Tue May 20, 2008 at 11:12:21 AM PDT

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    •  actually (0+ / 0-)

      21.6kwh for 65 miles... multiply by five to get the range of a typical gas-powered car (300+ miles) and you get about 100kwh, the same as I stated.  And that's for a subcompact!  I was being generous here.

      But that's just about storage, and I'm sure the energy storage problem will eventually be solved - by EEStor or something else.  What concerns me are charging time problems and grid load problems, which can't be solved just by using cooler technology.

      •  I'll grant that (0+ / 0-)

        I don't know how they expect to pull it off, unless the capacitor on Wiki is an older less potent version than what they are intending to go to production with. But it seems to me that any range in excess of 100 miles or so is wholely adequate for a commuter vehicle.

        The charging time seems like a non-issue. These capacitors can be charged in minutes ableit not at 220 volts.  Think about that. 5 or even 10 minutes at a charging station with some kind of cable coolilng system in place is not unreasonable. That's about what it takes to pump a full tank of gasoline. And from what I can glean, those appear to be the conditions under which these were tested.

        The grid load issues are a legitimate concern, and they are an example of the kind of infrastructural investment that would need to be applied. There is really nothing insurmountable here.

        The point is that we need a wholesale change in the way we approach energy use and production. The technology exists now to achieve that. Soon, as oil prices continue their upward march, we will have no other alternative.

        A regime is at it's most dangerous when it believes it's own propaganda...but that is also when it is most vulnerable.

        by MaverickModerate on Tue May 20, 2008 at 12:13:01 PM PDT

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