Title: Design and manufacturing of a composite wind turbine blade
1Design and manufacturing of a composite wind
turbine blade
- Team members
- Saeed Humaid 200000132
- Saleh Ali 199900262
- Advisor Dr. Adel Hammami
- Coordinator Dr. Mohamed Abdul - Hafez
2Plan of the presentation
- Introduction
- Project description
- Wind turbines
- Wind condition
- Aerodynamic properties
- Blade design
- Pattern
- Conclusion
3Introduction
- The wind energy is one of the oldest sources of
energy - The wind energy was substituted by fossil fuel
- With the first oil price shock, the interest in
the wind power re-emerged - During the last 20 years, the use of wind
turbines rapidly increased
4Introduction
5Introduction
6Project Description
- The main objective of this project is to design
and manufacture a mold for a composite wind
turbine blade.
7Project tasks
- literature survey
- Wind conditions in the UAE
- Aerodynamic properties
- Pattern
-
- Mold
8Main Components of a Wind Turbine
9Types of wind turbines
- Aerodynamic drag
- Aerodynamic Lift
-
10Types of wind turbines
- aerodynamic lift can divided according to the
orientation of the spin axis into - horizontal-axis
- vertical-axis
11Difference between small and large wind turbines
12Blade Design
13Al Fujairah wind distribution
14Al Fujairah wind distribution
- It was observed that
- The south west direction was selected
- The wind velocity will be 20 knots for 788 hours
a year.
15Energy extraction
.P Power produced (Watt) .? Air density
(Kg/m3) .A Cross sectional area (m2) .Va
Apparent wind speed (m/s) .CP Power factor
coefficient
16Design approach
17The fixed properties
18The relation between the shaft power and the wind
speed for different rotor diameter
19The relation between the shaft power and the wind
speed for different rotor diameter
20The Calculation
- Assumptions
- ? Air density 1.2 (Kg/m3)
- Rotor diameter 4 (m)
- a Angle of attack 8 (degree)
- ? Tip speed ratio 6
21Calculation the required properties in designing
the blade
- FL Lift force (N)
- FD Drag force (N)
- CL Lift Coefficient
- CD Drag Coefficient
- ? Air density (Kg/m3)
- A Blade area (m2)
- Va Apparent wind speed (m/s)
22Calculation the required properties in designing
the blade
- F Apparent wind angle (degree)
- ß The blade angle (degree)
- a Angle of attack (degree)
23Calculation the required properties in designing
the blade
? Tip speed ratio
24A small wind turbine design notes
- Assuming that
- Neglecting drag force
- CL 1
- COS (F) 1
This equation works best for the outer part of
the blade only
25Calculation the required properties in designing
the blade
26Optimize the chord width
27Optimize the chord width
28Optimize the chord width
29Selecting the airfoil
- Drawing the airfoil
- Airfoil selection is NACA 4412
- NACA 4412 best performance is for Reynolds Number
gt250,000
30Selecting the airfoil
31Calculation of Reynolds number
For Apparent wind speed Va 10(m/s),
Characteristic length d 0.377(m) and air
viscosity ? 1.46e-5(m2/s). Then Re 258219 gt
250000
32Design
33Design
34Pattern
- The pattern is an object which is exactly the
shape of the blade. Which is used to build the
mould for the blade. There are various ways to
make a pattern such as - CNC (Computer Numerically Controlled)
- Foam forming
- Wood patterns
- Metal patterns
35Design
36Pattern
37Pattern
38Conclusion
- Difficulties
- Environmental impact
- Fujairah project
39Environmental impact
- Visibility
- Noise Factors
- Effects on Wildlife
40Fujairah Project
- Three station in different locations
- Total power22.95 Mw
- Total number of turbines27
- Each turbine gives850 Kw
- Rotor diameter58 m
- The height55 m
- Each turbine cost1-1.3 million dollar
41Conclusion