TAMILNADU STATE COUNCIL FOR SCIENCE & TECHNOLOGY(STUDENT PROJECT SCHEME 2009-2010)

By, VISHWA CHANDRAN. N. M

VIVEKANANDHAN. S MANO PRAKASH. R NITIN. M. CHERIAN

B.E.AERONAUTICAL ENGINEERINGHINDUSTAN COLLEGE OF ENGINEERING, PADUR.

(Project Code : EME – 06)

Team : AIR ENGINEERS

GENERATION OF POWER USING WIND VELOCITY FROM MOTION OF VEHICLES

• Clean fuel• No pollution• Renewable resource• Sustainable & Reliable method of energy production• Economical power resource• Energy for the future

SIGNIFICANCE OF WIND ENERGY

RELATIVE

STATIC WIND TURBINE

Turbine static Wind moving

Kinetic energy of wind

Mechanical energy by turbine

Electrical Energy by Generator.

DYNAMIC WIND TURBINE

(Mounted on the Vehicle)

Moving Turbine Wind is static

CONCEPT

ENERGY CONVERSION

STATIC WIND TURBINES DYNAMIC WIND TURBINES

It is stationary and fixed in place. It is mobile.

Wind turbines are huge and costly. It is very small in size and cost

effective.

Installation is difficult and it requires a

huge space.

Installation is easy and requires less

space.

Can be installed only in high wind

areas.

Can be installed in all vehicles.

COMPARISON OF STATIC & DYNAMIC WIND ENERGY CAPTURE

DESIGN OBJECTIVES• Minimize drag • Maximize power.• Harness energy from the wind.• To develop a powerful, cheap, light, low drag, simple,

dynamically stable and durable prototype ram air turbine.

Prototype No. of blades Rotor diameter (cm)

Swept area (cm2)

Blade Length (cm)

1 3 25 490.87 11.6

2 6 26 530.93 10.5

PRELIMINARY DESIGN

DESIGN OF RAT(RAM AIR TURBINE)

Fig . 6 Bladed Rotor

Fig . 3 Bladed PrototypeFig .3 Bladed Rotor

Fig . 6 Bladed Prototype

PROTOTYPE

RAM AIR TURBINE(CAD MODEL)

6 Blade Rotor Supporting stand

Clamp

Generator

Bolt

Nut

Coupling

RAT Prototype

RAT Exploded View

STRUCTURAL

Fig. Stress

Fig. MeshFig. Strain

Fig. Displacement

ANALYSIS

Fig. 3 Blade rotor inside Test Section

Fig . Low speed Sub-sonic Wind TunnelFig. Digital Drag force Indicator

Fig. 6 Blade rotor inside Test Section

WI ND

TUNNE L

TE

ST I NG

Fig . Hand-held Non contact Tachometer

Fig . Inclined Manometer

Fig . Multimeter

MEASURING INSTRUMENTS

WIND TUNNEL RESULTSPROTO-

TYPEFREE

STREAM VELOCITY

(m/s)

FREESTREAM

VELOCITY(kmph)

ROTATIONAL SPEED(rpm)

DRAG(N)

COEFFICIENT OF DRAG

VOLT(V)

CURRENT(Ampere)

POWER(watt)

3 BLADE

PROTO

TYPE

5 18 4195 0.3924 0.52 9.58 0.05 0.479

7 25.2 5417 0.5886 0.4 12.2 0.09 1.098

9 32.4 6996 1.0791 0.44 16 0.18 2.88

11 39.6 8214 1.4715 0.40 18.6 0.25 4.65

13 46.8 9721 2.0601 0.41 22.2 0.35 7.77

15 54 10904 2.5506 0.38 24 0.42 10.08

6

BLADE

PROTO

TYPE

5 18 1529 0.5886 0.72 7 0.49 3.43

7 25.2 1991 0.7848 0.49 9.15 0.8 7.32

9 32.4 2562 1.3734 0.52 11.8 1.25 14.75

11 39.6 3018 1.962 0.5 13.8 1.62 22.356

13 46.8 3536 2.4525 0.45 16.05 2.02 32.421

15 54 3997 3.0411 0.41 20.4 2.42 49.368

COMPARATIVE GRAPHS

4 6 8 10 12 14 16 180

2

4

6

8

10

12

14

Power

Velocity (m/s)

Pow

er (w

att)

4 6 8 10 12 14 16 180

0.1

0.2

0.3

0.4

0.5

0.6Coefficient of Drag (Cd)

Velocity (m/s)

Coeffi

cien

t of

Dra

g (C

d)

4 6 8 10 12 14 160

10

20

30

40

50

60

Power

Velocity (m/s)

Pow

er (w

att)

4 6 8 10 12 14 160

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

Coefficient of Drag (Cd)

Velocity (m/s)

Coeffi

cien

t of

Dra

g (C

d)

3 BLADED PROTOTYPE

6 BLADED PROTOTYPE

• Power delivered = Cp x swept area of wind turbine x 1/2 d x u3

Cp = the power efficiency of the rotor (0.59) swept area of a turbine = πr 2 (r = radius of swept area, i.e. blade length) d = density of air (1.2256 kg/m3)u = wind speed (15 m/s)

Power delivered by 6 Bladed rotor : 64.78 wattPower delivered by 3 Bladed rotor : 59.89 watt

THEORETICAL CALCULATION

Fig . RAT in Aircraft

APPLICATIONS

STUDY OF DRAG OVER A VEHICLE

Fig . Frontal Pressure Fig . Flow Detachment

Fig. Pressure Distribution Fig . Velocity Distribution

Fig. Shape of duct with RAT

Fig. RAT Placement in front grill

PROPOSED APPLICATION

• Integration of Ram Air Turbine in the vehicle.• Storage problem in batteries.

This energy production produces no pollution and it is

clean free energy and it is a great social relevance at

present times with the world going green.

It is very cheap to harness this energy.

Energy production is continuous and reliable.

Unlimited free wind energy is available around us.

PROBLEMS TO OVERCOME

ADVANTAGES

THANK YOU

dc