HOME  |  NEWS  |  BLOGS  |  MESSAGES  |  FEATURES  |  VIDEOS  |  WEBINARS  |  INDUSTRIES  |  FOCUS ON FUNDAMENTALS
  |  REGISTER  |  LOGIN  |  HELP
News
Materials & Assembly

Composites Strengthen Wind Turbine Blades

NO RATINGS
< Previous Page 2 / 2
View Comments: Newest First|Oldest First|Threaded View
Page 1/3  >  >>
Ann R. Thryft
User Rank
Blogger
Re: weight of blades
Ann R. Thryft   3/23/2012 12:42:55 PM
NO RATINGS

I had the same question--will the use of wind turbines get to a scale where what they are doing interferes with, or at least somehow affects, larger-scale wind patterns, i.e., climate. I suspect this has already been at least considered, if not studied yet.


LouisDE
User Rank
Iron
Re: weight of blades
LouisDE   3/22/2012 5:03:41 PM
NO RATINGS
Ann, that brought a smile to my face ... "yet". 

For sure, there are not that many in use to cause a major change in the climate, but the use of the word ""yet" implies there could be. 

For sure, setting up a windmill directly in front of another windmill would be foolish, as the energy removed by the first unit will never reach the second. That said, what affect will removing <enter the energy amount of your choice here> have on the climate long term?  I posed the question only as it is an unknown to consider as we search for alternative sources to meet the ever-growing power needs of society.    

 

Ann R. Thryft
User Rank
Blogger
Re: weight of blades
Ann R. Thryft   3/22/2012 4:40:36 PM
NO RATINGS

Louis, I would find it tough to believe that we've got enough wind turbines on the planet yet to have an affect on climate, which is macro-scale, although it's an interesting question whether they might have an effect on weather, which is a local phenomenon. 


LouisDE
User Rank
Iron
weight of blades
LouisDE   3/22/2012 3:17:48 PM
NO RATINGS
At what point does the loss of mass in the blades and thus the loss of the flywheel effect begin to outweigh the benefits of lighter blades that start to spin faster in lighter wind, but stop sooner with the loss of wind?    As to the birds, that is a good point, however,  I was more interested in the affect on the climate when wind patterns are altered.   I know that darn butterfly that flapped his wings in China last year caused us to have an unusually warm summer. >mild attempt at humor<

 

Ann R. Thryft
User Rank
Blogger
Re: Individual pitch blade control
Ann R. Thryft   3/22/2012 2:58:45 PM
NO RATINGS

Thanks, Al, for that info about independent pitch control for responding to gusts faster and handling them better. And Aldo, thanks for the input about using genetic algorithm programming techniques for increasing efficiency.

As a side note, I was watching an episode of Terra Nova last week and suddenly noticed that the wind turbines they depicted as right inside the village were insanely small and incapable of providing the power they need, even when combined with solar panels. Of course, they would have had to put large enough turbines way outside the village, where they'd presumably get destroyed by marauding dinos.


Ann R. Thryft
User Rank
Blogger
Re: CAE plays a role in wind turbine blade design as well
Ann R. Thryft   3/22/2012 2:50:44 PM
NO RATINGS

Louis, I have wondered the same thing myself. I know that there's been a lot of debate about the harm done to birds, and I have read of some efforts to ameliorate those effects.


Ann R. Thryft
User Rank
Blogger
Re: CAE plays a role in wind turbine blade design as well
Ann R. Thryft   3/13/2012 3:27:09 PM
NO RATINGS

Thanks, kenish for that insight. I would guess that, with bigger blades, better optimization technology and possibly also an increase in power costs, that threshold will go up quite a bit.


Rob Spiegel
User Rank
Blogger
Re: CAE plays a role in wind turbine blade design as well
Rob Spiegel   3/13/2012 3:20:04 PM
NO RATINGS
Good points, Kenish. It will be interesting to see whether power costs increase. I would imagine conservation over the past few years must be having some impact. However, if EVs and Hybrids become plentiful, there will be more draw on the grid.

kenish
User Rank
Platinum
Re: CAE plays a role in wind turbine blade design as well
kenish   3/13/2012 3:03:05 PM
NO RATINGS
There's a huge wind farm near Palm Springs.  It's interesting that 20+ years ago there were 10-12 distinctly different turbine designs.  Nowadays about the only design in use is the 3-bladed turbine on a monopole mast.  Only the size varies.

My understanding is turbines are often deliberately "parked".  At low speeds the revenue from the power does not make up for the per-hour operating costs (wear and tear, maintenance, etc).  I'm sure the windspeed threshold will decrease as the turbines become more reliable and/or power costs per kWh increase.  (Southern California has very high electricity rates but also a surprising amount of wind power thanks to our topography).

Rob Spiegel
User Rank
Blogger
Re: CAE plays a role in wind turbine blade design as well
Rob Spiegel   3/13/2012 2:45:22 PM
NO RATINGS

Yep, Beth, that makes sense to use that technology to get the blades to follow the wind. It seems a natural direction to go in developing wind turbines. In a decade or two, our current wind tools may look quite primitive. We're probably only getting 10 or 15 percent of the possible energy from our current turbines.

Page 1/3  >  >>
Partner Zone
Latest Analysis
Take a look at the top 20 US undergraduate engineering programs. Then tell us -- did your school make the cut?
Producing high-quality end-production metal parts with additive manufacturing for applications like aerospace and medical requires very tightly controlled processes and materials. New standards and guidelines for machines and processes, materials, and printed parts are underway from bodies such as ASTM International.
Engineers at the University of San Diego’s Jacobs School of Engineering have designed biobatteries on commercial tattoo paper, with an anode and cathode screen-printed on and modified to harvest energy from lactate in a person’s sweat.
A Silicon Valley company has made the biggest splash yet in the high-performance end of the electric car market, announcing an EV that zips from 0 to 60 mph in 3.4 seconds and costs $529,000.
The biggest robot swarm to date is made of 1,000 Kilobots, which can follow simple rules to autonomously assemble into predetermined shapes. Hardware and software are open-source.
More:Blogs|News
Design News Webinar Series
7/23/2014 11:00 a.m. California / 2:00 p.m. New York
7/17/2014 11:00 a.m. California / 2:00 p.m. New York
6/25/2014 11:00 a.m. California / 2:00 p.m. New York
5/13/2014 10:00 a.m. California / 1:00 p.m. New York / 6:00 p.m. London
Quick Poll
The Continuing Education Center offers engineers an entirely new way to get the education they need to formulate next-generation solutions.
Sep 8 - 12, Get Ready for the New Internet: IPv6
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: September 30 - October 2
Sponsored by Altera
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