18 Sep 2009
I it quite unbelievable that they continue to "invest" in this Toxic asset known as "Windfarm" I have emailed time and time again - "DECC" "DTI" - you name it , to say that current (80m high) "Windfarms" - with an annual return of a fraction of One Percent of their cost - are completely unsustainable. I have pointed to the reasons for this which are twofold.
The cost of facing any given area of weather is a necklace-shaped function of (Log) size of TADs.
The lowest cost is for sizes where the T costs about the same as the A. This occurrs at about 1m diameter.
Operating at constant revs, wastes high wind, which causes the power taken from the wind to be approxiomately "pro-rata" - as opposed to cubicly - related to windspeed.
These two facts account - very nicely - for thye disparity in annual return between current (80m high) "technology" and a sensible design.
25 Sep 2009
If they were serious about actually doing something, they would invest in up-dating sails on cargo vessels. But second thoughts - we are probable doing badly enuf as it is.