flywheel home energy storage

Constructing a windmill is not very hard[1] The big problem with wind energy is the number of batteries. The wind doesn't blow all of the time after all.

I find the following example[2]:

"A 1 foot diameter flywheel, one foot in length, weighing 23 pounds spinning at 100,000 rpm will store 3 kWh of energy. However at this rotational speed the surface speed at the rim of the flywheel will be 3570 mph."

This is the typical description one finds. The speed is very unrealistic but the weight seems to be an even stranger figure. In stead of using only 10 kg we can quite easily use 1000 kg or 5000. Weight doesn't seem to be a problem of resources. To give the number a crude swing 3570 / 500 = 7.14 mph This doesn't seem to be a lot. A vacuum isn't really necessary, we pay for the losses in wind after all. When we move the mass to the rim of the wheel it seems possible to float such flywheel in a ditch in the back yard.

Storing 1 kWh using batteries costs between 250-500 $ Batteries have very limited life span and it's hard to step down the charging voltage. It seems far easier to use a motor to dump the wind into a rotating mass. The flywheel could be huge but digging a hole in the ground doesn't cost much space at all.

A 10 ton block could be "disappeared" into the ground quite easily. The energy density of flywheels can be 2 times as high as that of high tech batteries.[3] When we loose some of that edge though cheap engineering it would still equate to 20 tons worth of battery packs. It should take a lot of days for it to run down.


There should be some serious money in this if you want to help. I'm a honest guy :-) The world needs saving, going off-grid is just to expensive. The debunkers pretend return on investment is poor but they seem all to happy to ignore the dwindling currency and the sky rocketing energy prices. Compare the mortgage rates with 30 years ago. The demand for batteries isn't going to come down either, this will most likely will drive up the prices before production can match it. The green bottle neck is the energy storage technology. Generating power isn't much of an issue. Storage is just way to expensive, unreliable and hard to mass produce.


[1] - http://www.yourgreendream.com/diy_pvc_blades.php
[2] - http://www.mpoweruk.com/alternatives.htm
[3] - http://videos.streetfire.net/video/Flywheel-Hybrid_164617.htm

my blog
http://blog.go-here.nl/wind

(old url
http://blog.360.yahoo.com/blog-ooVnzrU3eqXHKSdB2TQ.j3cMn.tCeQ--?cq=1&tag=... )

Category:

Science & Technology

Tags:

• wind
• flywheel
• centripical
• force
• energy
• freeenergy
• physics
• engineering
• invention
• gabydewilde

[pierros14]

your speech alone, generated enough power to make me stop watching!

[gabydewilde]

@pierros14 go easy on the fast food. :)

[myztic123]

can you please speak a little bit faster?

[1BustedMyth]

I rate your speach at 50Khz and 1Kw connect it to a Flywheel and we are done! ;)

[WarzSchoolchild]

Ferrite magnets are fairly cheap. They are quite heavy with a density of about 7.8. Kinetic energy incrases to the square of the velocity, 10 times faster = 100 times more energy storage. A large circular track of levitating permanent magnets contained in an evacuated tube and buried in a field. Total kinetic mass say 200,000 kilos, velocity 300 meters/sec. = 9 billion Joules or 2.5 megawatt hours. of stored energy. The Physics & Engineering add up, and so does the Economics. VERY PROFITABLE!

[scubies04]

you speak like a rotating rotor which is 2000rpm

[MrJetjoe]

batterys are the new fuel...........

[sytrexx09]

this is not that practical? what material will be used tha twill not blow up at 18k RPM???

[BIGTROUT01]

If you modify the speed -25% and then adjust the pitch +25%, it will be a little easier to understand. The accent sounds much more prevalent, however.

[cadentavaricegrtrj]

The Oil companies are trying their best to stop free energy ideas from spreading to common people.

We need to put an end to this corruption ,start generating your own electricity now.

Look for the LT MAGNET MOTOR in youtube video search. Join the Revolution!!

[abc123456efg]

This person talks so slow I can understand them... Then the applause at the end was awesome