This document summarizes information about wind energy and wind turbines. It discusses the history of wind energy usage dating back to ancient Egypt and Babylon. It then describes the key components and operation of horizontal axis wind turbines, including blades, nacelle, tower, and total weights of over 160 tons. Advantages include producing pollution-free electricity from wind, while disadvantages include irregular wind speeds and higher capital costs. Vertical axis turbines that accept wind from any direction are also described, though they have poorer performance and reliability than horizontal axis designs.

1. Wind energy
Name : Mohammed AL shahrani

2. Introduction:
 History .
 Definition .
 Horizontal and vertical axis turbines.
 Construction of horizontal and vertical turbines .
 How does work .
 Advantages and disadvantages .

3. History :
• Egypt 3000 BC
• Babylon 2000 BC
• Iran 200 BC

4. Horizontal axis turbine :
• Definition
• Total energy 1.5
MW.
• Blades tall 13 m
(36 tons).
• Nacelle 56 tons
• Tower tall 64 m
(71 tons).
• Total weight 163
tons

5. Wind turbine size:

6. Wind turbine size:

7. Construction of horizontal axis turbine :

8. How does work :

9. Video :
 https://youtu.be/DILJJwsFl3w

10. Advantages Disadvantages
 Energy for free of cost.
 Produces electricity throughout the day.
 Pollution free and clean.
 Vast wind energy is available. ( 10 million MW).
 Can supply the power to remote areas.
 Economically competitive.
 Mechanical power for grading ,pumping Etc; using wind
energy.
 Up to 95% land of wind farms can be used for ranching,
farming and forestry.
 Low energy density.
 Irregular, unsteady wind energy.
 Variable speed.
 Variable wind direction.
 Higher capital cost.
 Can be located only in vast open areas.
 Far location from load centres.
 Complex designs.

11. Vertical axis turbine :
• Definition
• Total energy 200 kw-
100 w.

12. Different design ofVertical axis turbine:

13. Construction of vertical axis turbine:

14. How does work :

15. Video :
 https://youtu.be/4eJ9VXo6Fz4

16. Advantages Disadvantages
 Accepts wind from any direction.
 Components can be mounted at ground level.
 Ease of service.
 Lighter weight tower.
 Can theoretically use less materials to capture the same
amount of wind.
 Rotors generally near ground where wind poorer.
 Poor self-starting capabilities.
 Requires support at top of turbine rotor.
 Requires entire rotor to be removed to replace bearings.
 Overall poor performance and reliability.

17. Review

18. Questions :
Q1) Mention five components of horizontal axis turbine?
Q2) How does a horizontal axis wind turbine work?
Q3) Write down three advantages and disadvantages of horizontal axis
turbine?
Q4) write down Two advantages and disadvantages of vertical axis turbine?

19. My email:
mohammedd063vp@gmail.com