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saut syafrudin
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Join Date: Apr 2010
Posts: 12

Flywheel Energy Storage

11/03/2011 9:32 AM

Hi all, i have question,

.

can i change battery storage use by flywheel energy storage.....?

.

the problem is, in my actual system i use 48V 1,200Ah.

deep cycle battery, C10.

.

discharge by less than C20 at 50Ah, flat current discharge.

time to discharge +- 12 hours or DOD 50%

time to charge +- 6 hours, by +- 120Ah

.

is that feasible that flywheel energy storage system to take over the battery energy storage system, if the charge discharge requirement like's what i need .....?

for some reasons, whether flywheel energy storage characteristic be able sett same with battery energy storage character for long back up time, such like 12 hours back up time.

regards
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redfred
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Engineering Fields - Electrical Engineering - Been there, done that. Engineering Fields - Control Engineering - New Member

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#1

Re: flywheel energy storage

11/03/2011 9:42 AM

Sure you can. Just find a company willing to install a flywheel system for you and pay them.

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saut syafrudin
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Join Date: Apr 2010
Posts: 12
#4
In reply to #1

Re: flywheel energy storage

11/03/2011 4:01 PM

Dear All

thanks, in actual system if i use battery storage at 48v 1,200 Ah

i will spend money about 12,000 US $.

did flywheel energy storage will have a cost at 2 times more expensive ...?

at same rated power. battery energy storage 48V 1,200 Ah it will about

60 KWH flywheel energy storage, (sorry if i am wrong), but i only will discharge this

FES at 2.5KWH only

regards
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JRaef
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United States - Member - New Member Engineering Fields - Power Engineering - New Member

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Location: California, USA, where the Godless live next door to God.
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#2

Re: Flywheel Energy Storage

11/03/2011 11:22 AM

There are flywheel energy storage systems out there, the cost / benefit scenario makes them only viable for very large systems as far as I know. Friction is the enemy and at some point the cost of the right technology to minimize it crosses over the benefits it provides over batteries, but that crossover point is in the hundreds of kW.

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TonyS
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#3

Re: Flywheel Energy Storage

11/03/2011 1:53 PM

Have a look at http://www.dmm-pitwork.org.uk/html/brookhouse.htm

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RAMConsult
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Join Date: May 2007
Location: NYC metropolitan area.
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Good Answers: 444
#5

Re: Flywheel Energy Storage

11/04/2011 5:29 PM

You might try looking at some of the ideas contained in this dated gov't. report....

http://www.dtic.mil/cgi-bin/GetTRDoc?AD=ada302392.pdf&Location=U2&doc=GetTRDoc.pdf

Also check out the website of this company that just went bankrupt this week...

http://beaconpower.com/

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Sapper
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#6

Re: Flywheel Energy Storage

11/10/2011 6:54 PM

Dollar for Dollar in a commercial UPS a Static (Battery) UPS vs a Rotary UPS, the Rotary will cost twice as much as the Static.

The Static UPS will give approx 15mins at full load on the inverter and the Rotary UPS will give you 30 seconds without input power.

Physically, the Diesel Rotary UPS, will take up 2-3times more space that the equivalent Static UPS.

The Rotary UPS also has more moving parts, therefor more maintenance and more bits to fail when you really need them to work.

So, Yes, you can do what you are suggesting...but I would ask... Do you really Want\Need to??? I personally would not if I had a choice.

Regards.
Sapper

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PWSlack
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#7

Re: Flywheel Energy Storage

09/03/2024 4:47 AM

<...48V 1,2000Ah...> is, er, um <tap, tap, tap press equals> a little over 207MJ.

That is approximately a 2 tonnes flywheel 2m in diameter doing around 5,000rpm. $h!t! No CR4 reader would want to be anywhere near that bu%%er when a bearing fails!

Go battery storage instead. It's safer.

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JRaef (1); PWSlack (1); RAMConsult (1); redfred (1); Sapper (1); saut syafrudin (1); TonyS (1)

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