1. By 31-Salama Ragab 32-Salama Fahmy 33-Samir Zaher 34-Shrief Salama 35-Taher Maher Dr/Swellam Sharshir

2. وَهُوَ الَّذِي يُرْسِلُ الرِّيَاحَ بُشْرًا بَيْنَ يَدَيْ رَحْمَتِهِ

3. Titles:  Introduction  Horizontal Axis Wind Turbine (HAWT)  Vertical Axis Wind Turbine (VAWT)  Considerations  Wind Energy In Egypt  Wind power Calculation

4. Introduction Wind Definition: Air blowing so fast from region to another.  Wind Forming: -The sun heats the earth, thus in turn decreases pressure -Air is blowing from high pressure region to a low pressure region

5. History Of Wind Energy And Its Uses: - Wind energy used since 3000 B.C. in egypt to drive Sailboat -It is also used for Grinding of grain -It used also in china -It’s developed gradually to produce electricity by using wind turbines.

7. Wind farms specifications To benefit from wind energy,use more than turbine which called wind farm. -Specifications: -High speed. -Large area. -Away from city. -High height.

8. Wind Measurement: - Wind is the mean factor for wind energy. -There are many instruments for recording wind speed, for ex.: Anemometer

10. Direction of wind

11. Advantages & Disadvantages: DisadvantagesAdvantages Wind speed isn’t continues Simple source for electricity NoiseClean energy It may be harmful to some organisms like birds Decreasing CO 2 ratio

12. Wind Turbine Types  Horizontal Axis Wind Turbine (HAWT)  Vertical Axis Wind Turbine (VAWT)

13. How To Generate Electrical Power By using Wind Turbines

14. Vertical Axis Wind Turbine (VAWT)  AdVantages: -Working in multi directions. -Gear box and generators in the base -Num of blades can be increased.  Disadvantages: -Needing energy for starting. -Low wind speed ; as it hasn't any tower.

15. Types -Darrieus -Savonius:

16. Horizontal Axis Wind Turbine (HAWT)

17. Components

18. Degree of freedom: Yaw Drive Rotational Of Rotor

19. Pitch rotation: Electric Motor Hydraulic

21. Considerations -Number Of Blades: Two or three blades are commonly used,but three blades are more useful. -Shape: Airfoil -Length Of blade: Usually it’s from 30 to 40 m. -Tower height: Usually from 70 to 90 m. -Blade material: Epoxy graphite is so suitable.

25. B e t z L a w

26. Zafarana - The largest Wind farms in Africa -Area=120 km 2 -Number of turbines=650 Wind Energy In Egypt

27.  Power: 230-400 MW  Mean wind velocity=10 m/s Zafarana Wind Farms -Co 2 is decreased by 800 thousands tons every year due to this project

28.  Zafrana Wind Project will consist of 8 projects and will have a generating capacity of 545MW making it one of the largest onshore wind farms in the world By 2020,Egypt aims to complete zafarana projects which consist from 8 projects.

32. Finally we wish you have just got sufficient information about wind energy,and it wasn’t a waste of time for you.