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Related: About this forumEnough Wind to Power Global Energy Demand: New Research Examines Limits, Climate Consequences
http://www.sciencedaily.com/releases/2012/09/120909150446.htmScienceDaily (Sep. 9, 2012) There is enough energy available in winds to meet all of the world's demand. Atmospheric turbines that convert steadier and faster high-altitude winds into energy could generate even more power than ground- and ocean-based units. New research from Carnegie's Ken Caldeira examines the limits of the amount of power that could be harvested from winds, as well as the effects high-altitude wind power could have on the climate as a whole.
Their work is published September 9 by Nature Climate Change.
Led by Kate Marvel of Lawrence Livermore National Laboratory, who began this research at Carnegie, the team used models to quantify the amount of power that could be generated from both surface and atmospheric winds. Surface winds were defined as those that can be accessed by turbines supported by towers on land or rising out of the sea. High-altitude winds were defined as those that can be accessed by technology merging turbines and kites. The study looked only at the geophysical limitations of these techniques, not technical or economic factors.
Turbines create drag, or resistance, which removes momentum from the winds and tends to slow them. As the number of wind turbines increase, the amount of energy that is extracted increases. But at some point, the winds would be slowed so much that adding more turbines will not generate more electricity. This study focused on finding the point at which energy extraction is highest.
Using models, the team was able to determine that more than 400 terrawatts of power could be extracted from surface winds and more than 1,800 terrawatts could be generated by winds extracted throughout the atmosphere.
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Enough Wind to Power Global Energy Demand: New Research Examines Limits, Climate Consequences (Original Post)
xchrom
Sep 2012
OP
Climate Consequences as opposed to destroying the air and water with pollutants from mining and oil?
liberal N proud
Sep 2012
#1
liberal N proud
(60,334 posts)1. Climate Consequences as opposed to destroying the air and water with pollutants from mining and oil?
And radiation from nuclear accidents.
Give me a break!
The midwest was once filled with millions of wind mills. Wind mills on each farm place and some out in the fields used to pump water for live stock.
I will take wind generated power any day over the destructive effects of other current technologies!
Frustratedlady
(16,254 posts)2. I well remember the windmill on our farm...
The sound of it turning was hypnotic. Now, my son is in the business of wind towers.
The oil/coal companies have got to be a little nervous.