Variable SuperCapacitor batteries |
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alphabetikal
Registered User Joined: 20 May 2010 Location: UK Status: Offline Points: 217 |
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Posted: 15 April 2011 at 4:15pm |
check it out - http://hackaday.com/2011/04/15/variable-super-capacitor-battery-provides-power-on-the-go/ Does any one have any knowledge/experience of how these could be useful for 12v or 24v systems - especially with a voltage changer? Looks interesting, why have we not heard of these before? Or am i missing something!? http://en.wikipedia.org/wiki/Electric_double-layer_capacitor Disadvantages
[edit] Advantages
A Edited by alphabetikal - 15 April 2011 at 4:16pm |
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davey t
Young Croc Joined: 11 March 2004 Location: Bristol UK Status: Offline Points: 1428 |
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capacitors and ultracapacitors are normally used in parallel with a battery to provide a low impedance current sink/source for peak and pulsed currents. Energy density is too low for use on their own. They are normally placed near the load and makes it possible to use long battery cables.
We used to use a bank of these close to the electric motors. It was amazing how much energy they could sink and source. Modern lipo and SLA cells can provide more than enough power for the amplifiers and power levels we are using. Especially if you keep your cables short. Hence I wouldn't waste your money on supercaps
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Minirig portable soundsystem movement
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Saturnus
Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025 |
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Note that the energy density (not power density) is very low, and typically around 20Wh/l, where LFP cells have 220Wh/l, and Li-Po 320Wh/l.
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alphabetikal
Registered User Joined: 20 May 2010 Location: UK Status: Offline Points: 217 |
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yeh ... the old SLAs are still pretty decent huh...
wish for the day when batts can move on... all this talk of fuel cells is making me crazy! where's Tesla when you need him!? |
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TechnoChef
Registered User Joined: 23 April 2009 Location: Oxfordshire Status: Offline Points: 1109 |
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Couldn't you somehow use a sprung dancefloor with some kind of piston/generator assembly to harness the power of a mosh pit?!
Or maybe a big inflatable mat and one way valves, obviously a dance floor would contradict the 12V portability! |
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I think I'm in love with your mum.
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Saturnus
Old Croc Joined: 13 July 2010 Location: Copenhagen Status: Offline Points: 2025 |
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Roskilde festival actually had that as an installment 2 years ago. The electricity generated powered the music, and if enough people were dancing on it, the lightshow would start up as well. |
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tomschute
Old Croc Joined: 15 May 2006 Location: Mid Wales Status: Offline Points: 1817 |
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I always wondered why they don't design roads as heat source / power generators. There's enough of them and there not cheap to lay so why not put some hose in em! You could then heat them in the winter...
sorry bit off topic |
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Out to lunch... stableaudio@hotmail.co.uk
www.stableaudio.co.uk Speaker Building Services |
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TechnoChef
Registered User Joined: 23 April 2009 Location: Oxfordshire Status: Offline Points: 1109 |
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That is bl00dy cool!
Was just thinking out loud in the last post. Can't imagine it would be too practical for the real, portable world though. Shame! |
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I think I'm in love with your mum.
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davey t
Young Croc Joined: 11 March 2004 Location: Bristol UK Status: Offline Points: 1428 |
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I've spent many moment in a sweaty club thinking of ways to put this excess of people energy to use. The best way I thought would be to run water pipes around the ceiling and pumps water round from an underwater storage tank. It would keep the club cool as the water removes the heat from the room and puts it into the tank.
Then you can use the hot water to heat the room the next day or rest of the week. Piezo materials can dancing into electricity but are very inefficient.
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Minirig portable soundsystem movement
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slaz
Old Croc Joined: 27 November 2009 Location: London E2 Status: Offline Points: 2713 |
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You should spend more time checking out (girls' - I assume) asses and getting zullered mate Anyway - just curious how things are going with that minirig of yours ? Looks very snazzy on minirig.com ..... Could that thing be easily re-teaked to work as a "top" - with extra (obviously good deal larger) sub in mind ? Got any idea of final price yet ? |
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TechnoChef
Registered User Joined: 23 April 2009 Location: Oxfordshire Status: Offline Points: 1109 |
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Someone should build that into a jacket for ravers. Keep you cool overnight when you're dancing away, then when you stumble into the cold at 6am you'll be nice and toasty! |
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I think I'm in love with your mum.
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