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Author Topic: Flywheels as energy storage system!  (Read 4124 times)

Reformator

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jdsanders

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Re: Flywheels as energy storage system!
« Reply #1 on: September 23, 2008, 08:59:38 PM »
Hello  Reformator!

You're absolutely right, of course. You might want to check out the following company:

www.beaconpower.com   ;D

z.monkey

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Re: Flywheels as energy storage system!
« Reply #2 on: September 23, 2008, 09:12:41 PM »
Howdy Reformator,

My you are busy.  So many topics in the one day you have been here.  I guess you have a lot to share with the world.  The flywheel energy storage device is not a new topic.  Here's something for you to check out...

http://www.overunity.com/index.php/topic,4135.0.html

Blessed Be...

pequaide

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Re: Flywheels as energy storage system!
« Reply #3 on: September 24, 2008, 02:09:05 AM »
Engage your spinning flywheel with a second flywheel that is of equal mass and dimension; and is at rest. You will find that their rotational velocity will be halved.

If you do the math you will find that the total kinetic energy is also half.

If one flywheel has a rim mass of 40 kilograms and a velocity of 2 m/sec, its kinetic energy is 80 joules (1/2*40*2*2). The kinetic energy of both (80kg) moving a 1 m/sec is 40 joules.

So you see flywheels do not store energy they store momentum; Linear Newtonian momentum, no less.

infringer

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Re: Flywheels as energy storage system!
« Reply #4 on: September 24, 2008, 02:17:11 AM »
Wouldnt it actually be less because the intial engaugement causes a huge loss do to friction not to mention the process of engauging takes an amount of energy as well.

I think it would be safe to say once fully engauged you have less the half of what you originally started with.

-infringer-

pequaide

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Re: Flywheels as energy storage system!
« Reply #5 on: September 24, 2008, 03:34:22 AM »
How much momentum do you lose?

infringer

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Re: Flywheels as energy storage system!
« Reply #6 on: September 24, 2008, 04:08:38 AM »
I dunno would depend on the design I would guess.

But would you not agree that it would be a bit less then 50% of the original before the second wheel is engauged?

I've been wrong a time or two before but I would say there is a decent chance that I am correct in believing the more flywheels the more friction.