HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
<<  <  Page 2/6  >  >>
fpmodica
User Rank
Iron
Possible Objection to Flywheels
fpmodica   2/29/2012 11:25:56 AM
NO RATINGS
RNDDUDE,

Mechanical failure of a rotating mass, or the bearing system results in a runaway huge chuck of metal. Rotating machinery is tested in test beds lined in 1-3 ft of concrete to "catch" a failed rotor.

"That's just my opinion, I could be wrong." -Dennis Miller, "The Rants"

OLD_CURMUDGEON
User Rank
Platinum
GATES FUNDING BATTERY TECH....
OLD_CURMUDGEON   2/29/2012 11:03:13 AM
NO RATINGS
Maybe the technology that he SHOULD be funding is the next generation of computer operating systems that perform correctly ALL THE TIME.  Here's a novel thought.  He could invent a multitasking system and name it DOORS 3.2, since someone else has already trademarked the WINDOWS moniker!!!!!  Or, how about OS/2.2?  That's another catchy name..........

SalvadorRomo
User Rank
Iron
Re: BILL GATES funds big battery startup
SalvadorRomo   2/29/2012 10:45:42 AM
NO RATINGS
I attended yesterday the MIT Enterprise Forum at South Florida and one of the speakers actually talked about fly wheel technology. His company is PowerTree.

RNDDUDE
User Rank
Platinum
Re: BILL GATES funds big battery startup
RNDDUDE   2/29/2012 10:02:56 AM
NO RATINGS
Porsche actually has a racecar with this technology, but I am thinking more along the lines of stationary applications to store the energy from such intermittant sources as solar and wind. A primer...

http://www.ask.com/wiki/Flywheel_energy_storage

Charles Murray
User Rank
Blogger
Re: BILL GATES funds big battery startup
Charles Murray   1/5/2012 10:21:40 PM
NO RATINGS
RNDDUDE: Wish I knew the answer, but I don't. Anyone out there?

RNDDUDE
User Rank
Platinum
Re: BILL GATES funds big battery startup
RNDDUDE   1/5/2012 10:45:25 AM
NO RATINGS
OK, i'll say it again, energy storage via kinetic energy, not hydro but flywheels. Direct conversion of electricity, both in and out, at high effeciency, small footprint, near zero environmental impact, scalable. Why is everyone so fixated on yet-to-be-discovered battery improvements and ignoring this mature techmology? Even it it is used as a bridge solution it is affordable and implementable right now.

Charles Murray
User Rank
Blogger
Re: BILL GATES funds big battery startup
Charles Murray   1/4/2012 11:24:29 PM
NO RATINGS
I understand the "Mister Monopolizer" moniker, but I have to give Gates credit on this: It's one of five battery start-ups that he's funding. Development of battery technology is difficult at best, with serious doubt as to any payoff in the long run. If it works, we're all the better for it in the end.  

William K.
User Rank
Platinum
BILL GATES funds big battery startup
William K.   12/16/2011 7:48:19 PM
NO RATINGS
In response to the suggestion of using pumped storage, it is expensive and not that efficient, and it requires a whole lot of land, plus it could have a huge environmental impact. Other than those problems, it may be OK.

Seeing " Mister Monopolizer" funding any potentially crucial development is cause for concern. 

The biggest challenge related to liquid metal batteries is keeping them hot, because it would require a lot of power just to do that, unless the battery uses mercury, in which case the howel from the safety people will be quite loud.

What about the polystyrene battery that I read about being developed, which is supposedly ten times better .


Dr Xie Xian Ning from the National University of Singapore's Nanoscience and Nanotechnology Initiative and his team developed the soft, foldable membrane using a polystyrene-based polymer. When sandwiched between two charged metal plates it can store charge at 0.2 farads per square centimetre, which is claimed to be well above the typical upper limit for a standard capacitor.

Most polystyrene plastics are not very toxic, as well as not very expensive. Those are two valuable characteristics to have in a bettery. At this point it would be worthwhile to have more people investigating that approach. 

Of course we must make sure that some patent troll does not get hold of the patent. Perhaps I am being a bit ahead of things with that thought, but maybe not.


Charles Murray
User Rank
Blogger
Re: What is wrong with 'low tech' solutions?
Charles Murray   12/16/2011 5:31:23 PM
NO RATINGS
To DougISanDiego: You're right -- the technique you describe is pumped hydro, and it is currently the largest form of storage that we have (albeit, we have very little storage). The problem with pumped hydro is that it takes up large chunks of land -- too large, I'm told, to be seriously considered as a large-scale solution. It's a case of counties not wanting it in their backyards.

DougInSanDiego
User Rank
Iron
What is wrong with 'low tech' solutions?
DougInSanDiego   12/16/2011 5:11:43 PM
NO RATINGS
First of all, let me state that I'm an electrical engineer, so all the discussion about this chemistry and that chemistry pretty much goes over my head.  To me, most of these battery technologies sounds dangerous, difficult to control, and inefficient - and with a short life span to boot.

Why don't we consider using one of the oldest 'battery' technologies around: reservoirs?  Use the excess energy from the renewable sources to pump water up the mountain to the upper reservoir.  When the energy is needed, let the water flow down to the lower reservoir while spinning the turbines on the way down.

Are batteries significanly more efficient than reservoirs?  Water reservoirs are certainly more safe, last longer, and other than the small amount that evaporates or seeps into the ground, the energy stored in a reservoir has a very long 'shelf life'.  Of course, there are other benefits to water reservoirs - they can be great sources of recreational activity too.

Just a thought...

 

<<  <  Page 2/6  >  >>


Partner Zone
Latest Analysis
Advertised as the "Most Powerful Tablet Under $100," the Kindle Fire HD 6 was too tempting for the team at iFixit to pass up. Join us to find out if inexpensive means cheap, irreparable, or just down right economical. It's teardown time!
The first photos made with a 3D-printed telescope are here and they're not as fuzzy as you might expect. A team from the University of Sheffield beat NASA to the goal. The photos of the Moon were made with a reflecting telescope that cost the research team 100 to make (about $161 US).
At Medical Design & Manufacturing Midwest, Joe Wascow told Design News how Optimal Design prototyped a machine that captures the wing-beat of a duck.
The increased adoption of wireless technology for mission-critical applications has revved up the global market for dynamic electronic general purpose (GP) test equipment. As the link between cloud networks and devices -- smartphones, tablets, and notebooks -- results in more complex devices under test, the demand for radio frequency test equipment is starting to intensify.
Much of the research on lithium-ion batteries is focused on how to make the batteries charge more quickly and last longer than they currently do, work that would significantly improve the experience of mobile device users, as well EV and hybrid car drivers. Researchers in Singapore have come up with what seems like the best solution so far -- a battery that can recharge itself in mere minutes and has a potential lifespan of 20 years.
More:Blogs|News
Design News Webinar Series
10/7/2014 8:00 a.m. California / 11:00 a.m. New York
9/25/2014 11:00 a.m. California / 2:00 p.m. New York
9/10/2014 11:00 a.m. California / 2:00 p.m. New York
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Oct 20 - 24, How to Design & Build an Embedded Web Server: An Embedded TCP/IP Tutorial
SEMESTERS: 1  |  2  |  3  |  4  |  5  |  6


Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.
Next Class: 10/28-10/30 11:00 AM
Sponsored by Stratasys
Next Class: 10/28-10/30 2:00 PM
Sponsored by Gates Corporation
Next Class: 11/11-11/13 2:00 PM
Sponsored by Littelfuse
Learn More   |   Login   |   Archived Classes
Twitter Feed
Design News Twitter Feed
Like Us on Facebook

Sponsored Content

Technology Marketplace

Copyright © 2014 UBM Canon, A UBM company, All rights reserved. Privacy Policy | Terms of Service