Wind turbine falls down
Wind turbine falls down
(OP)
http://w ww.pressre publican.c om/homepag e/local_st ory_066213 456.html?g oback=.hom
Steven C
Senior Member
ThirdPartyInspections.com





RE: Wind turbine falls down
RE: Wind turbine falls down
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Wind turbine falls down
Re; blade manufacture high level overview;
the typical wind turbine blade design is similar to an aircraft wing. You have a center box beam or spar that supports the balde itself and is constructed of wood laminate with fiberglass or carbon fiber with fiberglass followed by pressure side and suction side skins that are all fiberglass.
The entire blade is manufactured by gluing the spar or box beam to the inner surface of the pressure side and suction side airfoils (skins). The QA problems I have seen are dry spots (lack of resin impregnation) and wrinkles followed by lack of consistent application of adhesive.
RE: Wind turbine falls down
Weather data for Altona, NY 3/7/09
Wind:
Wind Speed 4 mph (North)
Max Wind Speed 7 mph
Max Gust Speed 21 mph
Visibility 8 miles
Events Rain
Steven C
Senior Member
ThirdPartyInspections.com
RE: Wind turbine falls down
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"Pumping accounts for 20% of the world's energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies) http://virtualpipeline.spaces.live.com/
RE: Wind turbine falls down
Kind of a morbid interest as to what will become of all these wind farms once they become worn out.
RE: Wind turbine falls down
One idea that comes to mind is that if there was a break in the transmission line that connects them to the rest of the grid, then no synchronization frequency would be available to govern their speed. Without the grid synchronizing and loading them, then some certainly could get away. The safety machanism that feathers the blades if this happens worked on 63 out of 65 in the wind park. There was a fault in two of them and it proved fatal in one, though the second was also damaged.
For the time being Noble and GE are still working together on this, but stay tuned for the fireworks if they start pointing fingers!
Steven Fahey, CET