Embrace the nerdgasm! Super capacitors advancing into the real world!
97 replies, posted
So with this we could have like, really fast camera flashes that flashed brighter for a smaller period? Those use high-power capacitors.
Also better PSUs and since these have no chemicals in them, that's one less thing to worry about when recycling electronics.
[QUOTE=wraithcat;39687620]
Mostly because non electrics didn't need to have as many ways as possible to harness spare energy[/QUOTE]
Non-electrics have tons of electrical things in them. You're wasting gas every time you brake unless you can do something useful with it.
[QUOTE=Zeke129;39687505]Braking once is enough to run an air conditioner for a couple minutes?
Why are we not using braking to generate power in all vehicles?[/QUOTE]
Because you'd need a huge capacitor bank in order to store the energy quickly and release it controllably. It's expensive and heavy, so it would essentially nullify the purpose of trying to be more efficient in the first place.
In this case a single super capacitor could just be used.... though I imagine if super capacitors were to ever replace electric car batteries it'd simply use the hybrid-style system of using an electrical generator to brake the vehicle, which could put much of the wasted energy back into the capacitor.
[QUOTE=Zeke129;39687505]Braking once is enough to run an air conditioner for a couple minutes?
Why are we not using braking to generate power in all vehicles?[/QUOTE]
290073.872083
900 kg pound car decelerating to zero from 65 kph releases about 291600 joules of energy. Automobile A/C systems according to one site use about 3 kW of power.
If you could somehow impossibly collect [I]all[/I] the energy released from braking, that would power a car A/C for 90 seconds.
[QUOTE=Secrios;39687972]Soon...
[IMG]http://c548349.r49.cf2.rackcdn.com/wp-content/uploads/2011/11/eve-online-gui-hud.jpg?cda6c1[/IMG][/QUOTE]
Is that a Bhaalghorn?
[editline]23rd February 2013[/editline]
[QUOTE=Elecbullet;39687979]290073.872083
900 kg pound car decelerating to zero from 65 kph releases about 291600 joules of energy. Automobile A/C systems according to one site use about 3 kW of power.
If you could somehow impossibly collect [I]all[/I] the energy released from braking, that would power a car A/C for 90 seconds.[/QUOTE]
That's not too bad depending on how you're driving, if it's residential areas you'll be braking often due to corners and the like but on motorways and the like it's not gonna be particularly helpful.
[QUOTE=viperfan7;39680287]THis could replace EVERY battery, and depending on how many charge cycles they last for, [B]you could never need to buy another battery again[/B][/QUOTE]
While that is great to imagine, more likely they will find a way to force the supercap or the device it is used in to 'degrade' for consumer use so that you still have to buy replacements. Otherwise the economy collapses.
Oh fuck yes yes God yes.
Finally a invention that benefits all that WILL get used everywhere and funded like hell.
[QUOTE=Zeke129;39687779]Non-electrics have tons of electrical things in them. You're wasting gas every time you brake unless you can do something useful with it.[/QUOTE]
Well you are wasting gas every time you use a gas powered engine. By definition the engine is inefficient and wasteful.
However, cars do have an alternator in them, which takes control of providing power to your electronics in your car while driving. Harnessing breaking power isn't all that important unless we get to the stage where all cars are hybrid or full electric.
Also, since people were discussing atom thick things here is a picture,
[url]http://i6.photobucket.com/albums/y207/yoman258/WS2NT.jpg[/url]
This is a picture that I took, it is a Tungsten Sulfide nanotube, WS2, and this is the end of it. The lines you see on the edges are layers of the Tungsten Sulfide. So you can think of this kind of as a cylinder inside a cylinder inside a cylinder inside a cylinder. A cylinder onion if you like.
Those layers? 3 atoms thick. Sulfur sandwiching a layer of Tungsten atoms.
I also have pictures of sheets of these materials. Sheets that are 3 atoms thick.
[QUOTE=latin_geek;39687751]So with this we could have like, really fast camera flashes that flashed brighter for a smaller period? Those use high-power capacitors.
Also better PSUs and since these have no chemicals in them, that's one less thing to worry about when recycling electronics.[/QUOTE]
Camera flashes (xenon flash tubes) require a high voltage pulse to ionize the gas which super capacitors cannot do.
Super capacitors will be used for powering electronics where you would normally find a battery such as laptops and phones, it will not replace conventional capacitors.
[QUOTE=nagachief;39688588]While that is great to imagine, more likely they will find a way to force the supercap or the device it is used in to 'degrade' for consumer use so that you still have to buy replacements. Otherwise the economy collapses.[/QUOTE]
That's not how the economy works.
[QUOTE=Elecbullet;39687979]290073.872083
900 kg pound car decelerating to zero from 65 kph releases about 291600 joules of energy. Automobile A/C systems according to one site use about 3 kW of power.
If you could somehow impossibly collect [I]all[/I] the energy released from braking, that would power a car A/C for 90 seconds.[/QUOTE]
Less. 65kph is 18.05m/s. 0.5 * (900kg) * (18.05^2m/s) = 146,701J. I think you forgot to halve it. So that's 146.7kJ, enough to power the AC for 49 seconds. Not terribly exciting.
[QUOTE=Ricool06;39681873]This is incredible. This is going to help so much in providing communications equipment to the third world. Imagine if you could [b]connect a child to the internet[/b] and not have to worry about installing a large electrical infrastructure.[/QUOTE]
I just skimmed and read that and I couldn't stop laughing. Like those faux astronomy videos by Tim & Eric, just imagined them explaining it like that.
Just ignore energy lost to heat and sound then.
[QUOTE=catbarf;39691130]Less. 65kph is 18.05m/s. 0.5 * (900kg) * (18.05^2m/s) = 146,701J. I think you forgot to halve it. So that's 146.7kJ, enough to power the AC for 49 seconds. Not terribly exciting.[/QUOTE]
Hybrid cars recharge their battery when you hit the breaks, it's a pretty interesting feature. Rather than having a silicon carbine disk break or whatever, the electric Motor just turns itself into a generator and slows the car down to produce electricity.
If a car was using a large super capacitor I'd imagine it'd make a lot of sense just to put the energy back into the car when you brake, it'd just be wasted otherwise. Not to mention when you're rolling down a hill with the breaks on the car is producing quite a lot of energy, it's not just always braking on flat ground.
In the context of a fuel car though it might make less sense.
Correct me if I'm wrong, but aren't capacitors not able to store a charge long term without being "refreshed" every so often? Or does that not apply to these "super" capacitors?
[QUOTE=Ardosos;39691717]Correct me if I'm wrong, but aren't capacitors not able to store a charge long term without being "refreshed" every so often? Or does that not apply to these "super" capacitors?[/QUOTE]
A capacitor can store a charge for a long time, depending on its internal leakage this can last hours to years.
Most memory (RAM & ROM) is stored with capacitance.
I love stuff like this!
Thank fuck. I hate it when my vibrator runs out of charge three hours in to a six hour session. Having to dress myself, go get more batteries, stuff them in and turn on my vibrator again kills the moon so much.
[QUOTE=areolop;39680257]I dont see how this will pull "more" energy than before. Its not like your plugging in your phone and popping a circuit[/QUOTE]
It's not like you'll plug in your phone and suddenly
OH LOOK CITY WIDE BLACK OUT
[editline]23rd February 2013[/editline]
also this allows for electric cars that use actually safe materials rather than fucking lithium which is just nasty shit
[img]http://www.wired.com/images_blogs/photos/uncategorized/2008/04/11/battery_fire.jpg[/img]
[URL="http://www.youtube.com/watch?v=EzGrKWEyE40"]Fat bitches [/URL]who are pretentious about their "Environmentally safe" cars which are actually just as bad, if not worse, than gas will ACTUALLY be able to be environmentally friendly.
[QUOTE=Eltro102;39680005]Sweet; portable railguns and shit[/QUOTE]
Nope, sorry. EDLC's don't like to output in massive jolts. There's videos of people melting pennies with them, but not atomizing it like a large normal capacitor would. Look at Photonicinduction's capacitor video, only holds a tiny fraction of the amount that an EDLC can hold, but outputs at such a high jolt that it can explode coconuts/watermelons/your hand.
Too bad there's still the fact that graphene superconductors leak like a mother fucker. They can't hold a charge for shit.
[QUOTE=TehMentos;39680001]Does this mean that I won't have to charge my future phone thrice a day?[/QUOTE]
Depends on what kind of super hardware is inside.. I bet the phones 10 years from now will outperform a high end gaming rig :)
[QUOTE=TonyP;39680130]I wonder what it would feel like to hold a sheet of something only one atom thick. Apparently paper is somewhere around 100,000-200,000 atoms (what kind of atoms is paper, carbon?) thick.[/QUOTE]
gold leaf is the thinnest thing on earth that most people have handled, and it's several orders of magnitude thicker than 1 atom. an atom is never going to be more than 3 angstroms or so in diameter, while gold leaf is about 1000 angstroms thick on the low end
It's also kind of funny how the Federal Government has been talking about spending hundreds of billions of dollars on new battery technology only to have something extraordinarily cheap and easy stumble out of the wood-work :v:
this makes me want to go play fallout for some reason, then i remember i dont have a copy of fallout anymore because its on my brother's skyrim account and hes never not playing skyrim.....
also super-capaciters, can't wait to see what happens when these get outside the labs and factories and make it into people's home workshops, i mean look what cheap neodymium magnets did to diy enthusiasts :P
The real question is if we can build a damned space ship powered by these things, [i]then[/i] I'll be happy.
[QUOTE=Pierrewithahat;39688001]Is that a Bhaalghorn?
[/QUOTE]
Nope, it's a shitfit is what it is.
[QUOTE=Chryseus;39689283]Camera flashes (xenon flash tubes) require a high voltage pulse to ionize the gas which super capacitors cannot do.
Super capacitors will be used for powering electronics where you would normally find a battery such as laptops and phones, it will not replace conventional capacitors.[/QUOTE]
Ever taken apart a disposable camera? They have some relatively big capacitors inside, and I've heard some people modify them to be like a tazer.
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