Theoretical and Design Analysis of SAVONIUS TURBINE

Theoretical and Design Analysis of SAVONIUS TURBINE
(And its Application in Highway Power Production)

1. Theoretical and Design Analysis of Theoretical and Design Analysis of
SAVONIUS TURBINE SAVONIUS TURBINE
HALDIA INSTITUTE OF TECHNLOGY
And its Application in Highway Power Production . . .
By : . . . By : . . .
Anil Ghorai 10300711003
Ashish Ranjan 10300711008
Jaydeep Gupta 10300711013
Nawal Prabhat 10300711020
Santanu Giri 10300711037
Under The Guidance of :… Under The Guidance of :…
Rajeev Ranjan
Asst. Professor,
Dept. of Mechanical Engineering

2. Energy Contained in the Energy Contained in the Winds Winds
The power in the wind can be computed by using the concepts
of kinetics.
Kinetic Energy = ½ mv
2
.
Amount of Air passing is given by
m
= AV
m
= AV = ½ AV.V
2
watts
= ½ AV
3
watts
A = (/4)D
2
(Sq. m)
Available wind power Pa =( D
2
V
3
)/8 watts

3. Extraction of Energy by Conventional Wind Extraction of Energy by Conventional Wind
Turbines Turbines
The Conventional Turbineswork on the Drag/Lift prod uced by the Winds
on the Blades.
BETZ’S LAW : According to Betz's law, no turbine can capture m ore
than 16/27 (59.3%) of thekinetic energyin wind.
This is analogous to Carnot Efficiency for Heat Eng ines

4. Problems Associated with Conventional Wind Problems Associated with Conventional Wind
Energy Generation Energy Generation

The Selection of Suitable sites: Very low number of suitable
sites.

The cost of land to be utilized.

The suitable speed of winds is not available throughout the year.

The fluctuations in Winds Speeds is high in case of naturally
produced winds.

5. The Idea behind the Project The Idea behind the Project
Theprojectutilizesthefollowingthingsinordertoachievethe
powerfromthewindsinadifferentandnonconventionalway..

ToProducethepowerbyusingArtificiallyCreatedWinds.

The Artificial winds areCreated by the movement of
Vehiclesonahighway.

6. Cont… Cont…

7. The choice of Suitable turbine The choice of Suitable turbine
The two principle types of Wind Turbines are . . .
•The motion is dependent on the Lift delivered by the air.
•The operation of the Horizontal Axis Wind Turbine
necessitates the existence of very highly laminar flow of air.
•
The motion is dependent on the Drag Force delivered by the
•
The motion is dependent on the Drag Force delivered by the
air.
•The operation of the Vertical Axis Wind Turbine does not
necessitates the existence of very highly laminar flow of air.
•The mechanism can handle air flows from more than one
directions.

8. SAVONIUS WIND TURBINE SAVONIUS WIND TURBINE
Due to its Simplicity and Yet Efficient Performance ,
the SAVONIUS Wind Turbine is Chosen for the Project

9. Advantages of Advantages of Savonius SavoniusTurbine Turbine
•
Simplicity in Geometry.
•
Easy to Design and Install.
•
It has high Wind Collecting capacity.
•
Due to less Complexity in Design, its easier to perform the Maintenance in future. Maintenance in future.
•
Lower Efficiency of Operation
•
Rotational Speed is less.
•
Large Diameter Turbines are required for proper power
generation.

10. Wind and Blade Interaction for a Wind and Blade Interaction for a Savonius SavoniusTurbine Turbine

11. Methodology Methodology
•
Analyse wind patterns and characteristics on a highway. By g athering data
from the drag force created by different vehicles at max spee d limit on
highway.
•
Evaluate various turbine designs to predict which would be b est for
highway uses based largely on durability but also on the foll owing factors:
vibrations,reliability,efficiency,manufacturability andcosttobuild.
Analysing Wind Patterns Analysing Wind Patterns
•
The running vehicle on highway create a drag force in the moti on of its
propagation.
•
Theaveragedragvelocityona busyhighwaywasfoundtobe8m/s.

13. Theory and Design Theory and Design

14. BASE DIMENSIONS

Height 14 inches

Width 11 inches
BLADE DIMENSIONS

Height
120 cm
Specifications of The Wind Turbine Specifications of The Wind Turbine
Height
120 cm

Diameter 60 cm

Thickness 2 mm

Angle b/w blades 180
SHAFT DIMENSIONS

Diameter 2.54cm

Length 18 inches

15.



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The average wind speed, Vavgin the proximity of the moving vehicles is
approximated as 8 m/s.
The following table summarizes the value of these three wind speed pa rameters.


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16. Introduction of Shrouds Introduction of Shrouds

Shrouds can be a very essential part of a vertical axis wind turbine.

Shrouds creates a funnel effect in the wind turbine .

It is used to guide the wind flow and direct it tow ards the blade in a
closed environment thus eliminating cross winds and more force on
the blade.
Use of Dynamo Use of Dynamo

The Dynamo uses rotating coils of wire and magnetic fields to
convert mechanical rotation into a pulsing alternate elect ric current
throughFaraday'slawofinduction.

Dynamo produces alternating current that can be converted i nto
direct current using rectifier to charge the 12v battery cel ls and thus
thepowerproducedbytheturbineisstored

17. Consideration of Losses Consideration of Losses
•
Efficiency of Wind Capture by Turbine.
•
Efficiency of power transmission from blade to the shaft
which depends on frictional losses.
•
Electrical Efficiency of the Dynamo to convert in i nput
power into electricity.
•
Losses in bearings.
The losses due to friction are proportional to the
velocityofslidingorrubbing.
Whereas, the efficiencies of Wind Capture and
Dynamo are considered constant for given range of usual
speeds.

18. Working formulae and Results Working formulae and Results
•
Theoretical Available wind power
Pa =( D
2
V
3
)/8 watts
•
If,
E,
Wand
T are Electrical, Wind Capture and Transmission
Efficiencies, the Actual Power is Given as;













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,,++
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1
' * ) ""'
2
345 3467 348 9:49:
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7
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•Some values of output power are compared at various speeds is
summarizedbelowinthegiventable...

19. Advantages of The Idea Advantages of The Idea
•
The idea represents an independent source of
electricityproduction.
•
Theproductionisenvironmentfriendly.
•
The equipment no longer relies on natural
wind convections; it relies on the induced
turbulenceinthevicinityofamovingvehicle •
The production of energy is 24x7, unlike solar
cells and wind mills which are dependent on
ambient
parameters
.
ambient
parameters
.
•
There is no need of transmission of energy
because the energy is consumed at the point of
productiononly. •
Theideaissophisticatedandcosteffective.

20. Conclusion Conclusion
•The Idea is Environment friendly
•An Independent Source Of Power generation
•
Choice of turbine :
Savonius
Turbine
•
Choice of turbine :
Savonius
Turbine
•Power Produced: Approx: 40 Watts

21. THANK YOU THANK YOU