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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
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Theoretical and Design Analysis of SAVONIUS TURBINE

Jan 09, 2017

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Rajeev Ranjan
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Page 1: Theoretical and Design Analysis of SAVONIUS TURBINE

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 10300711003Ashish Ranjan 10300711008Jaydeep Gupta 10300711013Nawal Prabhat 10300711020Santanu Giri 10300711037

Under The Guidance of :…Under The Guidance of :…

Rajeev RanjanAsst. Professor, Dept. of Mechanical Engineering

Page 2: Theoretical and Design Analysis of SAVONIUS TURBINE

Energy Contained in the Energy Contained in the WindsWinds

The power in the wind can be computed by using the concepts of kinetics.

Kinetic Energy = ½ mv2.

Amount of Air passing is given by

m = � AVm = � AV

= ½ � AV.V2 watts

= ½ � AV3 watts

A = (�/4)D2 (Sq. m)

Available wind power Pa =( � � D2 V3 )/8 watts

Page 3: Theoretical and Design Analysis of SAVONIUS TURBINE

Extraction of Energy by Conventional Wind Extraction of Energy by Conventional Wind TurbinesTurbines

The Conventional Turbines work on the Drag/Lift produced by the Winds on the Blades.

BETZ’S LAW : According to Betz's law, no turbine can capture more than 16/27 (59.3%) of the kinetic energy in wind.

This is analogous to Carnot Efficiency for Heat Engines

Page 4: Theoretical and Design Analysis of SAVONIUS TURBINE

Problems Associated with Conventional Wind Problems Associated with Conventional Wind Energy GenerationEnergy 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.

Page 5: Theoretical and Design Analysis of SAVONIUS TURBINE

The Idea behind the ProjectThe Idea behind the Project

The project utilizes the following things in order to achieve thepower from the winds in a different and non conventional way..

� To Produce the power by usingArtificially Created Winds.

� The Artificial winds are Created by the movement ofVehicleson a highway.

Page 6: Theoretical and Design Analysis of SAVONIUS TURBINE

Cont… Cont…

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Page 7: Theoretical and Design Analysis of SAVONIUS TURBINE

The choice of Suitable turbineThe choice of Suitable turbineThe 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.

Page 8: Theoretical and Design Analysis of SAVONIUS TURBINE

SAVONIUS WIND TURBINESAVONIUS WIND TURBINE

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

Page 9: Theoretical and Design Analysis of SAVONIUS TURBINE

Advantages of Advantages of SavoniusSavonius TurbineTurbine

• 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.

Page 10: Theoretical and Design Analysis of SAVONIUS TURBINE

Wind and Blade Interaction for a Wind and Blade Interaction for a SavoniusSavonius TurbineTurbine

Page 11: Theoretical and Design Analysis of SAVONIUS TURBINE

MethodologyMethodology

• Analyse wind patterns and characteristics on a highway. By gathering datafrom the drag force created by different vehicles at max speed limit onhighway.

• Evaluate various turbine designs to predict which would be best forhighway uses based largely on durability but also on the following factors:vibrations, reliability, efficiency, manufacturabilityand cost to build.

Analysing Wind Patterns Analysing Wind Patterns

• The running vehicle on highway create a drag force in the motion of itspropagation.

• The average drag velocity on a busy highway was found to be 8 m/s.

Page 12: Theoretical and Design Analysis of SAVONIUS TURBINE

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Page 13: Theoretical and Design Analysis of SAVONIUS TURBINE

Theory and DesignTheory and Design

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Page 14: Theoretical and Design Analysis of SAVONIUS TURBINE

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

Page 15: Theoretical and Design Analysis of SAVONIUS TURBINE

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The average wind speed, Vavg in the proximity of the moving vehicles is approximated as 8 m/s.

The following table summarizes the value of these three wind speed parameters.

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Page 16: Theoretical and Design Analysis of SAVONIUS TURBINE

Introduction of ShroudsIntroduction 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 towards the blade in a closed environment thus eliminating cross winds and more force on the blade.

Use of DynamoUse of Dynamo

� The Dynamo uses rotating coils of wire and magnetic fields toconvert mechanical rotation into a pulsing alternate electric currentthrough Faraday's law of induction.

� Dynamo produces alternating current that can be converted intodirect current using rectifier to charge the 12v battery cells and thusthe power produced by the turbine is stored

Page 17: Theoretical and Design Analysis of SAVONIUS TURBINE

Consideration of LossesConsideration 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 input

power into electricity.• Losses in bearings.

The losses due to friction are proportional to thevelocity of sliding or rubbing.

Whereas, the efficiencies of Wind Capture andDynamo are considered constant for given range of usualspeeds.

Page 18: Theoretical and Design Analysis of SAVONIUS TURBINE

Working formulae and ResultsWorking formulae and Results

• Theoretical Available wind power Pa =( � � D2 V3 )/8 watts

• If, �E , �W and �T are Electrical, Wind Capture and Transmission Efficiencies, the Actual Power is Given as;

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• Some values of output power are compared at various speeds issummarized below in the given table . . .

Page 19: Theoretical and Design Analysis of SAVONIUS TURBINE

Advantages of The IdeaAdvantages of The Idea

• The idea represents an independent source ofelectricity production.

• The production is environment friendly.• The equipment no longer relies on natural

wind convections; it relies on the inducedturbulence in the vicinity of a moving vehicle

• The production of energy is 24x7, unlike solarcells and wind mills which are dependent onambientparameters.ambientparameters.

• There is no need of transmission of energybecause the energy is consumed at the point ofproduction only.

• The idea is sophisticated and cost effective.

Page 20: Theoretical and Design Analysis of SAVONIUS TURBINE

ConclusionConclusion

• The Idea is Environment friendly

• An Independent Source Of Power generation

• Choice of turbine : SavoniusTurbine• Choice of turbine : SavoniusTurbine

• Power Produced: Approx: 40 Watts

Page 21: Theoretical and Design Analysis of SAVONIUS TURBINE

THANK YOUTHANK YOU