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South Korea Testing Out Ultracapacitors

In my mind, ultracapacitors and hydrogen play similar roles. They are both advanced, proposed forms of energy storage that always seem just over the horizon… no matter how far along we travel. With hydrogen, the problem is not the power generating technology itself – fuel cells exist, and they work great. The problem is that we have poor means of storing and distributing the fuel. Ultracapacitors have the opposite problem. The infrastructure for transmitting and generating electricity is all in place; what we lack are the actual ultracapacitors themselves.

Granted, scientists are hard at work trying to build these ultracapacitors, and with the levitra online pharmacy usa nanotechnology available to material scientists today, there is good reason to cialis online sales believe it is within our reach. But I’m not such a patient guy, and I still want to see real live examples of ultracapacitors in action.

Looks like I’ll have to go to South Korea, because that’s where ultracapacitors from Maxwell Technologies (of San Diego) were shipped earlier this year, and are now being tested. The South Korean government has hooked them up to a Korean subway system, where they will capture electricity from regenerative braking. A full demonstration of the technology isn’t scheduled to happen until mid 2009, but for now Maxwell claims that tests are going well. They say that they could reduce grid consumption by 20%!

More importantly, if we see real, working, prototypes from Maxwell, that means that car-sized ultracapacitors might not be that far off. An ultracapacitor-powered electric vehicle is better than a lithium-ion powered one, because it can charge in minutes, rather than hours.

Maxwell! Bring some of those ultracapacitors to New York! We’ve got plenty of pharmacy viagra cheap subways here, let me tell you. In fact, I think I wouldn’t mind the ear-splitting screetch of the 1 Train if I knew that all that braking was going to cialis india pharmacy a good purpose. Well, not as much anyway.

Via Greentech Media

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written by Clinch, December 12, 2008
Supercapacitors sound great (yes, they're the same thing) but lets hope they aren't "greenwashed" (and by that, I mean companies using them in applications where they're not really suitable, just because they're a green and exciting technology).

The other problems I see with this, is if they can charge very quickly, would there be a heating issue?
And what is their discharge rate (i.e. how long can they hold their charge)? Because if they're used for conventional cars, you can't always tell exactly how much power a journey will take, so would charge it more than needed, and then waste the excess energy from discharge once you reach your destination (although, if you could plug it in to the mains to discharge the capacitor in to the grid, rather than it just be wasted). And there's also the the best place free levitra sample issue of not always being able to park where you can recharge, such as if you go to the supermarket, and park in the carpark for a couple of hours (yes, I know it's unrealistic that someone would need to spend that much time shopping, but that's beside the point) you could come back to your car, and find the capacitor has discharged so much, that you don't have enough energy to viagra now online get back home.
written by Nikita Kondraskov, December 12, 2008
I heard that some fairly large ultra capacitors are used in the subway system of Moscow.

The project was for testing purposes only, but I beleave it is still running for daily business as well.
written by Niels, December 13, 2008
Supercapacitors are or will be used to capture braking energy (from braking speed of a car/train or braking kinetic energy from a crane), which then can be used for the next cycle of accelleration or lifting. They can hold more of the best choice cheap levitra without prescription their stored charge for a longer period than normal capacitor, but not as much energy as a battery. The good thing is you don't need very big supercaps for cars, as long as you have a battery in the circuit. The bad thing is, you do need very big supercaps for windmill parks to stabilise the output and for bigger windmills to start up.

Anyways, for cars you need far smaller ones, since you only need to capture energy from braking, which will then be used to accelerate (like a flywheel does) or even slowly charged back into the battery (but better use it immediately to save your battery's lifetime). Supercaps can, in contrast with batteries, be charged and discharged hundreds of thousands of times an also much faster than batteries.

Those are their main features so you wouldn't want to use it as or instead of a battery, but just for the part of braking and private uk viagra prescription accelerating. So please don't see them as some holy grail to replace batteries.
written by Clinch, December 14, 2008
Isn't that just regenerative braking then? And don't they already have that?
Regenerative brakes shouldn't screech...
written by Harry, December 14, 2008
The screech of the train you hear is metal on metal, either the canad ian pharmacy brakes (if they are too worn out), or the wheels on rail as the train goes around a sharp corner. If the wheels screech when braking, they've locked, and they're sliding, which is bad news, as it causes flat spots on the wheels. And braking that hard is only done in emergencies.
Regenerative brakes use magnetic resistance, so would make the same sort of noise as a generator or motor.
Future of Ultracapacitors
written by Jacob, December 15, 2008
I think one of the biggest hurdles facing ultracapacitors is energy density. That is, they currently hold less energy per kilogram vs. other types of energy storage. However, current research is rapidly uncovering potential for higher energy density in ultracapacitors.
Ultracapacitors are now in action
written by Ray, December 15, 2008
Yes, you might have to go to Korea to see the KRRI system. But the testing is almost complete and they will install a REAL system in the Seoul subway system.
I'd love to cialis 30 mg bring ultracapacitors to NYC -- have already tried to do that on the transit buses, but let me know who I can talk to to see if we can help reducing that screeching noise when braking -- by the way, regenerative braking will NOT create the metal to metal screeching noise.
current systems, not limited by technolg
written by Mark, December 22, 2008
The thing is, we have ultracapacitors now, they're just low energy density. If you look at the Maxwell website, they list the capacitors you can buy, you can just order them! They're great for energy storage that you need to capture quickly, and also discharge quickly, so pretty much perfect for regenerative breaking.
It seems to me that the reason we don't see many more of these setups is not because we don't have the technology, it's because we don't have the money in our public works budget to get stuff like this going. You'd need the motors/generators (maybe they could use existing hardware on this?) and the energy storage, the retrofix/new subway cars, not to mention the lowest prices for cialis labor involved in changing the setup. It seems like with all the space on subway cars, they could have the room to how to get cialis house the capacitors to hold at least some of that energy, to help get the car going again, but it seems to me it's a money issue.

Alternatively, most subways use power transmission in the tracks, yes? Why not skip the on board energy storage and just put it back into the grid, that way you don't need to keep expensive storage equipment on each car, and you're still basically saving (almost) as much energy, subway net metering.
Ultracaps in use
written by Todd Edelman, December 25, 2008
Ultra or supercaps have been in use for several years on buses in Nuremburg, Germany and a tram in France. And there are more examples. The tram runs on lines which for various reasons have no overhead lines, so there is no way to feed back braking energy. The bus in this example is a Diesel-electric with a small engine which runs generators. One big difference is that - just like with hybrid cars - it starts from a standstill with no exhaust and less noise.
Vinyl records, 8-Tracks, Cassettes, and Oil Burning
written by Uncle B, December 28, 2009
We will obsolete Oil burning, gasoline burning, with more and more efficient uses of Electricity, all computer, solid-state controlled of course! Super-Capacitors and NiMh batteries have great promise, and patent shysters aside (Google, torrent the movie "Who Killed The Electric car) America stands to win, as it is rich in Solar, Wind Wave, Tidal, and Geothermal power and will soon develop waste free Thorium bed reactors to replace the get cialis prescription current weapons grade waste producers the corporatist industry now foists on the public for Military Prowess more than electricity production! (bunch of profiteering bull-shitter corporatists!). Electronics and buy viagra where the associated Physics, the surfaces of which have been hardly scratched, will be well examined by superior minds of link for you levitra low price Chinese and Indian scholars and they will sell to a know-it-all Yankee Doodle the new technologies they discover - example in hand: the BYD Shanghai taxi cabs - Chev "Volt" knock-offs, already tested for two years plus in Shanghai China, and due for import to U.S.A.possibly before GM(America) with its "Marvelous Michigan Schooled Miracle Automotive Engineers" get the original "Volt" out of the computers and buy levitra no prescription more than a "vapor-ware" school-boy's wet-dream! Or: The electric bullet trains now running regular routes in China! Yes! they have beaten the Americans in progressive matters! Yes, Yankee Doodle your pants are so down around your ankles on this one! Even Europe has them! This makes Yankee Doodle "Third World" in his gasoline guzzling SUV! Speaking of "Third World" Look what GM(America) left us a a monument to Corporatism: read this site and weep! Super Capacitors, if not already commandeered by the Greedy, All-Powerful, Military for "Defense Purposes" as was the rumored Depleted Uranium Super Battery" will certainly play a huge part in the conversion from Oil to electric energy in America! Keeping in mid of course what the corporatist bully criminals did with the NiMh batteries from the EV-1 cars and remembering too, thaose same type batteries are proven in
America in service in the Toyota Rav4 battery plug-in mini-AUV in California and are still pulling strong at over 150,000 miles of charges folks! Forgive my cynicism, but doo see the movie Please!

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