Zusammenfassung der Ressource
Wind Power
- Harnessing the Wind
- Flying
- Humans have long yearned to flying i.e. Icarus
- Da Vinci designed flying
machines that were never built
- Otto Lilienthal died in the pursuit of flight
- Benoulli's Principle explains how flight is possible
- A fluid that is moving faster
has lower pressure,
- The shape of a wing causes
air to flow faster over the top of
the wing than it does beneath
- Which produces a lower pressure
above the wing and a higher one
below the wing
- Creating a PGF that pushes upwards
- Revolutionized travel, in 2000 8,000 flights
were taking place at any moment
- Sailing
- Long history in Middle East and China
- Efficient means of transportation carrying
people and goods from port to port and
bringing prosperity to costal regions
- Used for exploration too
- When the Lanteen was invented
we could now sail into the wind
- Based on the same principle as flying,
"lift" is horizontal rather than vertical
- Sails are oriented so that wind flows
faster over the front of the sail creating
a PGF that pulls the sail forward
- The keel provides resistance
and keeps the boat moving
forward
- Power Generation
- Windmills
- Used for grain grinding and water pumping
- Horizontal and Vertical Axis emerged.
- Horizontal was more efficient.
- Wind Turbines
- Used to generate electricity
- 1% of Canadian energy is produced by wind
- Can be increased to 5% but is stopped by NIMBY
- Noise and look of turbines is unattractive
- Invented in 1888
- Turby is a good alternative which
does not produce the noise that
current wind turbines do
- Wind Energy basics
- Wind is a form of solar energy, winds are caused
by uneven heating of atmosphere by the sun
- When harnessed by wind
turbines it generates electricity
- Wind energy is the process by which
wind is used to generate electricity
- Horizontal and Vertical axis designs
- Components include
- Blade which converts wind
energy to rotational shaft energy
- Drivetrain, which is a gearbox + generator
- Tower
- Pros
- It is a free, renewable resource
- Clean, non-polluting electricity
- Cons
- Expensive requires higher initial investment
- The Noise kills birds
- Intermittent, wind will not always blow when you need it