02 Feb '13, 3pm

Man-Made Wind for the Wind Turbines of the Future

I agree. I’ve seen various concept drawings of this for many years. I wonder why I’ve not heard of any in production. As far as using water, hmm. Are the following thoughts accurate? The tower height isn’t specified here, but from freshman level meteorology we learned the adiabatic lapse rate of a column of air is three degrees F per thousand feet of altitude. The tower system will need to access the different temperature air masses, and the larger the difference between the heated column of air and the temperature at the top of the column, the greater the airflow. If the mass of descending air is sufficient to spool up the turbines, an equal mass of air had to ascend the tower by using “ambient heat” energy. If the step of introducing water to reverse the flow of the air mass from ascending to descending is taken out, the ascending air exhausts from the tower into the low...

Full article: http://cleantechnica.com/2013/02/02/low-cost-wind-power-f...

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