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Slide 1
An Introduction to wind power By Jack Bradley, University of
Bradford
Slide 2
Introduction to Wind Power History of wind power Wind resource
How wind turbines work Some basic characteristics Relative
efficiencies Environmental Impacts
Slide 3
Where we use our energy
Slide 4
In the home
Slide 5
Where Our Energy Comes From?
Slide 6
Future Energy Sources
Slide 7
UK Wind Resource 990 TWh Onshore of which 60+ will be
recoverable. 2869 TWh Offshore of which 100+ will be
recoverable.
Slide 8
World Wind Resource 1200 TW World Resource 10TW Theoretically
recoverable Worlds Energy Consumption 1.3TW Source Twidell And
Weir
Slide 9
Persian (2000 b.c) Direction of Prevailing Wind
Slide 10
Windmills
Slide 11
1970s and 80s
Slide 12
2000+
Slide 13
Wind Pumps
Slide 14
Early Electricity Source www.windpower.dk
Slide 15
World Wind Markets
Slide 16
Power Law A v l
Slide 17
Turbine Size Source Renewable Energy World Mar 02
Slide 18
Simple Wind Loggers
Slide 19
Wind Speed Distribution Curves Mean
Slide 20
Energy Distribution
Slide 21
European Wind Atlas
Slide 22
NOABL
Slide 23
Basic Principles Drag Machines
Slide 24
Basic Components of HAWT Nacelle Swept Area Rotor made up hub
and blades Tower Hub Low Speed Shaft Direction Free wind Direction
of Blade Rotation Yaw Bearing
Slide 25
Lift Machines Horizontal Axis Drag Lift True Wind
Direction
Slide 26
Lift Machines Horizontal Axis Drag Lift True Wind Direction
Direction of Blade Movement Apparent wind direction Driving
Force
Slide 27
Lift Machines Horizontal Axis Drag Lift True Wind Direction v
Direction of Blade Movement V b Apparent wind direction v R Driving
Force
Slide 28
Tip Speed Ratio (TSR) CpCp TSR
Slide 29
Solidity High Solidity machines have low TSR and High Torque
nLow Solidity machines have high TSR and low torques
Slide 30
Different Types of WEC Source Boyle
Slide 31
Anemometers Spot measurements of little use. Average wind
speeds required Simple Anemometer gives Run of Wind
measurement
Slide 32
UK Wind Speeds
Slide 33
Impacts (Noise) Source Boyle
Slide 34
Impacts (Visual)
Slide 35
Impacts (Birds) It is estimated for 1000MW in Holland 21,000
bird deaths 1,000,000 due to power lines 1,500,000 due to wild
fowlers 9,000,000 due to road traffic Source Winkleman 1995
Slide 36
Conclusions Huge world resource Power in the wind is
proportional to the cube of the speed Assessment of site wind speed
is critical Like all generation wind power has environmental
impacts Careful siting can minimise these problems