Comments on: New wind turbine blade designs could reduce costs http://www.ewea.org/blog/2012/12/new-wind-turbine-blade-designs-could-reduce-costs/ Breath of fresh air Sat, 15 Jun 2013 10:44:10 +0000 hourly 1 http://wordpress.org/?v=3.5.1 By: Zoë Casey http://www.ewea.org/blog/2012/12/new-wind-turbine-blade-designs-could-reduce-costs/#comment-27715 Zoë Casey Thu, 10 Jan 2013 09:48:19 +0000 http://www.ewea.org/blog/?p=4240#comment-27715 Vestas is working on an 80m blade: http://www.vestas.com/en/media/news/news-display.aspx?action=3&NewsID=3163

]]> By: enphase m215 http://www.ewea.org/blog/2012/12/new-wind-turbine-blade-designs-could-reduce-costs/#comment-27664 enphase m215 Wed, 09 Jan 2013 23:54:06 +0000 http://www.ewea.org/blog/?p=4240#comment-27664 Is this the largest blade made?

]]> By: Dr.A.Jagadeesh http://www.ewea.org/blog/2012/12/new-wind-turbine-blade-designs-could-reduce-costs/#comment-26934 Dr.A.Jagadeesh Wed, 02 Jan 2013 12:50:12 +0000 http://www.ewea.org/blog/?p=4240#comment-26934 Interesting post.
From Wooden blades to FRP and composite materials with glass or carbon fibres and now glass fibre-reinforced epoxy resin and balsa wood is a long journey.
Blade mass, or weight, increases with the cube of its length, creating all sorts of difficulties for manufacturing, transporting, erecting, and maintaining the latest generation of huge turbines.
That’s the reason why manufacturers use the latest composite materials with glass or carbon fibers to cut weight while maintaining strength. Three years back Clipper Wind power disclosed work on 7.5-MW turbine, and in 2010 a Norwegian company announced plans to introduce a 10-MW turbine with a rotor diameter of 475 feet

The first electricity generating wind turbine was developed in Scotland in the 1880′s by Professor James Blyth of Anderson’s College, Glasgow. Since then, wind turbines have made serious strides in technology.
Blades are getting much larger, however, this is creating a whole new set of problems.
• Noise issues – Bigger blades have a faster tip speed, thus are louder.
• Transportation issues – Over 37 meters, only one blade can fit on a truck.
• Increased manufacturing costs – Tooling and composite molds becomes complex and expensive.
• Mechanical problems – Large blades create stress on the mechanical and gear components.

With offshore Wind Farms becoming popular in Europe and will spread in US,.China,Taiwan,Korea etc. The size of the Wind Turbine is on the increase as noise considerations in offshore wind farms are minimum.
Dr.A.Jagadeesh Nellore(AP),India
Wind Energy Expert
E-mail: anumakonda.jagadeesh@gmail.com

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