Re: Pipestone
- From: Terry Pinnell <terrypinDELETE@xxxxxxxxxxxxxxxxxxx>
- Date: Sat, 09 Jul 2005 14:00:04 +0100
"Aubrey McIntosh, Ph.D." <newsposter@xxxxxxxxxxxxxxxxxxxxxx> wrote:
>I just drove through Pipestone, Mn. It was after dark, and I came
>across a red light on the horizon, like an isolated small airport. Then
>more. Then they ran from horizon to horizon. There was some type of
>huge installation that I had not known anything about.
>
>On the way back, from curiosity, I drove back through in the daytime.
>These appear to be Zond Z-750 windmills. I drove on gravel roads for 30
>miles, taking pictures. There is a swath mile wide, that has more
>windmills than I will give a number for.
>
>I have put a brief annotation and some of the photos at
>http://aubrey.vima.austin.tx.us/pipestone.html
>
>I googled for "Pipestone wind farm" and read a bit. If I comprehended
>correctly, these are Zond Z-750 (750Kw) units. There is information
>dated about 2000 that Enron bought Zond, and the installed price of the
>units went from $1.00/watt to $1.25/watt. The design life is 30 years,
>and the utilization factor at this location is about 23%.
>
>Check my numbers for some decimal mismanagement here. Thirty (30) years
>is about 946,728,000 seconds, or 262,980 hours. This gives an ideal
>energy output of 197,235,000 Kwhr, or accounting for the utilization
>factor, 45,364,050 Kwhr. At $0.06/Kw-hr this gives $2,721,843 of
>electricity.
>
>By happenstance I saw some blades on the ground outside a manufacturing
>facility on I-35 just south of the Texas border, and I saw a nacelle
>loaded on a truck just north of Ft. Worth, both on the return drive from
>the same trip. Perhaps this means the manufacturer is nearby.
>
>(Jim, that exotic color is all over Minnesota. I don't think Garrison
>Keillor has ever mentioned it. They call it "green.")
>
Interesting stuff. But why such enormous images?!
Visually compare your
http://aubrey.vima.austin.tx.us/pipestone1109.jpg size 733 KB, with my
http://www.terrypin.dial.pipex.com/Images/Windmills50.jpg size 71 KB
Less than a tenth the size for virtually no loss of quality. I simply
resized to 50% and saved as a good quality JPG. (BTW, I could barely
see the windmills in either!)
--
Terry Pinnell
Hobbyist, West Sussex, UK
.
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- From: Aubrey McIntosh, Ph.D.
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