Common sense isn't.
As we wait for TVA's
announcement page to be updated with fourth quarter 2001
results, we can ponder the weather data from the last few days of
the year. As luck would have it, after a string of very windy days,
the old year went out, and the new year came in, with a whimper (or
low winds). Below about 4 meters/second (about 9 mph) the wind
turbines can produce no power.
Unfortunately, or fortunately, depending on your perspective, the temperature was also quite low during this time of low wind. Wind turbines can produce more power with lower temperature, denser air. So, in a way the wind turbines like cold and windy weather best, unlike most people. The dense, cold air on the mountain was not being taken advantage of to make power at a time when power was needed for heating. In fact, we can be sure that the turbines themselves were consuming power to keep the precious components warm.
You may explore the effect of varying temperature and humidity on the power produced by the turbines, using my TVA Buffalo Mountain wind power calculator. Of course, variations in temperature or humidity don't make much difference if the wind isn't blowing.
NOAA for the
Previous Bottom Line Reports:
|Quote of the moment|
|Be not unwilling in what thou doest, neither selfish nor unadvised nor obstinate; let not over-refinement deck out thy thought; be not wordy nor a busybody.|
|~ Marcus Aurelius Antoninus, Meditations. iii. 5. ~|
Common sense isn't.
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I last touched this page on Saturday, 2007-11-17 at 05:09:06 UTC.