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DESIGN AND ANALYSIS OF WIND TURBINE FOR HIGHWAY

PROJECT ON

PRESENTED BY:

SABHAYA JAYESH -120870119201SANDIP JOSHI -120870119202

IMMANUEL ALEXANDER -120870119203SONANI RINKESH -120870119205

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MOTIVATION

A van carrying 2nd shift diploma students of Parul overturned on national highway due to lack of visibility at night.

Driving on highways at night is a difficult task due to improper lighting facilities, resulting into high accidents rates. The project aims at designing and analysing vertical axis wind turbine for the highways in India in order to recapture wind energy from moving vehicles.

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OVERVIEW

Research Phase Data collection Design Phase Analysis phase Prototype Testing results

RESEARCH PHASE

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Sr. No Title & Author publication Work Done

1 HighwayWindmill: R.SATHYANARAYANAN,C.GIRIRAMPRASATH,S.MUTHAMIZH,K.T.GOPINATH

IEEE

• The j-type blade design rules out savonius design in high power energy generation as it has both the c-type design and aerodynamic wing design fused together forming an hybrid model shape, so that the blade acts on drag and lift theory of wind turbine for a normal air pressure the mechanical power produced will be much higher as compared to the other design types.

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Experimental Comparison Study for Savonius Wind Turbine of Two & Three Blades at Low Wind Speed: Mohammed Hadi Ali

IJMER-vol-3 issue 5 oct-2013

•It was observed from the measured and calculated results that the two blades savonius wind turbine is more efficient, it has higher power coefficient under the same test condition than that of three blades savonius wind turbine. The reason is that increasing the number of blades will increase the drag surfaces against the wind air flow and causes to increase the reverse torque and leads to decrease the net torque working on the blades of savonius wind turbine.

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www.windstuff.com/lenz wind turbine

•Edward Lenz has found one Design of wind turbine which uses the principal of venture meter in construction of wind mill which was thought by one patent email to him and he had construct the turbine which named as Lenz VAWT

Sr. No Title & Author publication Work Done

4. Design procedure for Lenz type vertical axis wind turbine for urban domestic application Himmatsinh P.Gohil 1

Prof. S.T. Patel 2

P.G. Student 2 Assistant Professor Mechanical Department G.E.C. Valsad, Gujarat, India

IJSRD - International Journal for Scientific Research & Development| Vol. 2, Issue 03, 2014 | ISSN (online): 2321-0613

From this paper one can learn a design procedure for latest invented Lenz VAWT. From the design calculation and based on previous research data in related domain, basic design parameters of Lenz type VAWT is derived which are tip speed ratio, wing dimensions etc.

DATA COLLECTION Available data

1. Power required for an LED streetlight2. Swept area required3. Wind data

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1. Power required GMR : Chennai Outer Ring Road National

Highway LED Lighting

PALMTM MAX offers a highly effective and efficient lighting solution for street light application. It is offered in variants of 110W, 130W, 150W, 180W and 210W.

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2. Swept area required Power = 0.5 x Swept Area x Air Density x Velocity3

Air has a known density (around 1.23 kg/m3 at sea level)

Velocity calculated using anemometer

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3. Wind data

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day 1 day 2 day 3 day 4 day 5 day 6 day 7 day 8 day 9 day 100

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2

3

4

5

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7

8

6.8

5.2

2.3

3.2 3.1 32.7 2.5 2.3

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5.6

4.9 5.2

4.5

5.34.5 4.5

3.4

4.6

6.56.4

5.6 5.6

6.76.3

4.5

6.4

4.5

5.66.3

Chart Title

Height 1m Height 1.5m Height 2m

DAYS(1-10)

AVG.

WIN

D VE

LOCI

TY(m

/s)

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DESIGN PHASE

INITIAL DESIGNS

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FINAL DIMENSIONSParameter Value suggested by Ed LenzAspect ratio 1Diameter 1000mmHeight 2000mmNo of stages 1Shape of blade Lenz typeWing width 0.0937 x DiameterChord length diameter x 0.4No of blade 3Tip speed ratio 1 to 0.4 (assumed)Frontal area 2 m2Pitch angle 90⁰Helix angle 60⁰

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CAD MODEL(PTC Creo 2.0)

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ANALYSIS PHASE

ANSYS CFX SIMULATION Introduction Objectives Boundary condition Mesh generation Assumptions Mathematical formula Results Conclusion

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PROTOTYPE BUILDING PHASE

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TESTING PHASE

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RESULTS

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Pulley ratio used=31. rotor pulley diameter=9.5cm2. motor pulley diameter=3.2cm Motor used DC motor1. Voltage=9V2. Current=0.5ampere3. Max power produced during testing=4.5W

Wind energy available in wind=Power = 0.5 x Swept Area x Air Density x Velocity3

0.5x0.45x0.30x1.225x216=17.8605W

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Cp = Coefficient of performance 𝑪𝒑 = (the power extracted from wind) (the power in wind) Therefore (4.5/17.8605)=0.251959 𝑪𝒑 = 0.251959

Our prototype helix Lenz vertical axis wind turbine is 25% efficient

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Wind tunnel test report on Lenz VAWT

Comparing our wind turbine with a wind tunnel test report on straight bladed Lenz VAWT.

We were able to achieve peak RPMs of up to 675 this is because of the turbulent wind from both directions due highway traffic also due to cold air breeze at night time.

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Peak efficiency achieved in controlled conditions is shown in the graph.

Our turbine was able to achieve efficiency of 25% but with accurate production techniques we can achieve even more than 28%

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Cp of our turbine is 0.25

25mph=8.33m/stherefore to calculate TSR

of our turbine we take the min RPM =276

By Eq V=∏DN/60=6.499m/s

TSR=(blade speed/wind speed)

=(6.4998/8)=0.81So our values match the

experimental values

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So final conclusion if we make a production model of our turbine with 2 m2 frontal area the maximum power produced

Power = 0.5 x Swept Area x Air Density x Velocity3

= 264.6W Obtainable power= Cp x 264.6 = 66.15W So we will require 2 wind turbine for 100W power

supply

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PHOTO GALLERY

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