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18 Feb 2010 12:02:04

UK to design world's biggest wind power test rig

UK to design world's biggest wind power test rig
The world's largest open-access offshore wind-turbine test rig is to be developed in the UK by the Energy Technologies Institute (ETI).

ETI announced the plans earlier this week for the new site, which will located next to the New and Renewable Energy Centre in Blythe, Northumberland.

The rig will enable the development of more low-cost turbines and protect offshore schemes from financial risk.

Lord Drayson, the minister for science and innovation at the Department for Business, Innovation and Skills, said that the rig would support other sites in development: "Testing is key for manufacturers, and today's announcement is further proof of the UK's commitment to providing access to world-leading facilities.

"The drive-train facility proposed by the ETI will complement projects already underway. In December, the government had already announced £11.5m towards a blade-test facility at the New and Renewable Energy Centre, which will provide a capability to test blades up to 100m in length."



Discussion Thread  

19 Feb 2010

Try as I do, it seems impossible to get the simple message across that, in the case of a wind turbine, bigger is more expensive per m^2 of weather faced. For those just out of bed, this is because we want Area, but we must Pay for Volume, and, strange as this may seem, early in the morning, the two are not the same. That is why they have different names.
Now when it comes to Alternators - those unmentionable, unfashionable parts that every "turbine" must be coupled-to in order to send any energy extracted from the wind, to somewhere else for use - draw breath - it so happens that One big one to replace 4 of 1/4 the thro'put costs only about Half as much as the 4.
So, the total cost T+A depends upon what physical Size of Turbine-Alternator Device is deployed. We can have, for instance, 128 of D metres diameter, or 32 of 2D metres diameter, or 8 of 4D metres diameter, and so on. The cost in each case will not be the same, but the Area of weather faced, will be the same.
The cost is least for diameters where the T costs about the same as the A. This occurs at the very convenient size of around One metre diameter. Just under this and the required coupling gear-ratio becomes 1:1.
But why let a silly little "Arguement" like that get in the way of your super green furry "eco-friendly" BUSINESS !!

Discussion Thread  


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