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Wind Power Presentation
Transcript of Wind Power Presentation
wind farms In favour or against? Historical background 3500BC 2000BC 0 600 1300 1800 1900 1888 1920 1991 First sailboats Creation of windmills to pump water Windmills to grind grain into flour First horizontal axis windmill in Europe Windmills appear in America Charles F. Brush - wind turbine producing 12KW of electricity Wind turbines appear all over Europe Some important data Darrieus - vertical axis wind turbine World’s first off-shore wind farm, Vindeby Darrieus - vertical axis wind turbine Amount of energy produced by wind turbines over the years compared to their size 1985 - 80kW (with a rotor diameter of 20m and hub height of 30m)
1995 - 600kW (with a rotor diameter of 46m and hub height of 78m)
2005 - 5000kW (with hub height of 120m) On-shore vs. Off-shore Well above ground level (stronger winds), 3km from the nearest shorelines.
The electricity produced is transported underground
Smaller wind turbines Located on water
Higher wind speeds available off shore
The electricity is transported via undersea cables
Requires dock space
More expensive Impacts of wind turbines Social Conflicts of interest Political Political
Environmental 70-80% of the UK public support wind farm development
Ecological impacts are the principal barriers to social acceptance Wind power is subsidized by the Government. Environmental Effects on animals (birds, bats, fish)
Visual impact - aesthetic impact on the landscape
No waste Restricted sites, not all sites can be used
Radar and Radio signals
Off-shore wind farms can increase ship collision risk Are you in favour or against wind power in the UK? What is wind ?
Motion of air molecules
Air moves from high air pressure towards the area of low
Pressure gradient force
Wind speed is directly proportional to this pressure gradient