PPT 1

“DESIGN AND FABRICATION OF HYBRID

MULTIPURPOSE WINDMILL”

Under the Guidance of

MANJUNATHA.MSenior Lecture

Department of Mechanical EngineeringMaharaja Institute of Technology-Mysore

The project “DESIGN AND FABRICATION OF HYBRID MULTIPURPOSE

WINDMILL” is a fabrication work done with clear detailed theoretical calculations.

The specialty in our windmill is that pumps water from the water tank/bore wells by taking only the mechanical power from the windmill (Here no electricity is used to run the pump) and

it also can be used to generate Power

Pond Aeration to supply vital oxygen for optimum water quality, healthier fish and plants in ponds

we had implemented solar panels with windmill to takeover when there is no sufficient wind to run the turbine.

The complete project is divided into two extremely different but interrelated stages. Those are nothing but

design stage and

fabrication stage.

DESIGN

STAGE

During the design stage,

The design started right from the wind velocity calculations.

On careful analysis of data’s relating with wind through checking practically with ANEMOMETER

Analyzing through proper sources like wind data from Agricultural Department and Meteorological Department Bangalore ,etc.

Followed by wind data calculations

BLADE ANGLEROTOR MAIN SHAFTGEARS AND GEAR BOX BEARING HOUSINGBEARINGS MECHANISM (To convert rotary to reciprocate) TOWER SIZE AND MATERIAL PUMPGENERATORINVERTERS BATTERY .,etc

FABRICATION

STAGE.

In the fabrication part a great deal of man work like

METAL CUTTING SHEET METAL WORK WELDINGTURNING PAINTING ASSEMBLYand other operations were done to get a

full shape of a windmill.

so, our wind mill has

theoretical and practical

exposures. By coupling the pump

and the electricity generation in a

single windmill have made it a

special from its kind.

First we started careful analysis of data’s relating with wind through checking practically with ANEMOMETER

Analyzing through proper sources like wind data from ,

Agricultural Department

Meteorological Department Bangalore ,etc.

Figure : Wind power density distribution in India

Figure : Installed wind power capacity growth in India

TYPE OF MACHINE

NO. OFBLADES

AXIS OF

ROTATION

ROTOR POSITION

W.R.T

TOWER

STARTING

TORQUE

ROTORSPEED

POWER

Propeller

machine2 or 3 Horizontal

Upwind ordownwind

Moderat

e

Fast Electrical

Multi-

bladed

Machine

6 to

24

Horizontal Upwind High Slow Mechanical

Savonius

machine

2 or 3 Vertical - High Slow Mechanical

Darrius

machine2 or 3 Vertical - Very low Fast Electrical

FIGURE: TYPICAL WIND MACHINE DESIGNS

HISTORICAL ASPECTS:

Some milestones in the history of wind machines are given in Table

Conceptual understanding of aerodynamic shape and position of center of forces or zero moment reduced the structural problem of supporting the blade.

This was in the second decade of twentieth century.

This is an important mile-stone in the history of wind machines. Thereafter, longer blades of aerodynamic shape could be designed and used.

PERIOD MACHINE APPLICATION

640 AD Persian wind mills Grinding, etc

Before 1200 AD Chinese sail type windmill Grinding, water pumping, etc

12th century AD Dutch wind mills Grinding, water pumping, etc.

1700 AD Dutch windmill to America ----------

1850 to 1930 AD American Multi-bladed Water pumping, 35 VDC power

1888 AD Brush wind turbine; Dia.17m,

Tower 18.3m

12 kW Electric power

1925 ADJacob’s 3 bladed propeller

Dia.5m, 10-20m/h, 125 to 225 rpm

0.8 to 2.5 kW at 32 VDC

1931 ADYalta Propeller, Russia; 2

bladed, dia.100 ft

100 kW

1941 ADSmith-Putnam Propeller

2 bladed, dia.175ft, 30 m/h, 28 rpm

1250 kW

1925 AD Savonius Machine Mechanical or Electrical power

1931 AD Darrius Electrical power

1980s AD2 bladed propeller

(Commercially available)

225 kW

2000 AD HAWT, VAWT 400-625kW, 1.2-3.2 MW

FIGURE: TYPES OF AIRFOILS

FIGURE: TYPES OF AIRFOILS

Karnataka is divided into 10 agroclimatic zones, considering texture, depth and physiochemical properties of soil, rainfall, elevation, topography, major crops and type of vegetation.

The zones are:

(1)Northeastern Transition,

(2) Northeastern Dry,

(3) Northern Dry,

(4) Central Dry,

(5) Eastern Dry,

(6) Southern Dry,

(7) Southern Transition,

(8) Northern Transition,

(9) Hilly zone, and

(10) Coastal.

BIBLIOGRAPHY

•Johnson G.L., Wind Energy Systems, Prentice Hall, 1985.

•Ministry of Non-conventional Energy Sources (MNES), Wind Power

Development in India – Towards

•Global Leadership, MNES, Government of India, October 2002.

•Rangarajan S., Wind Energy Resource Survey in India, Vol.5, Indian

Institute of Tropical Meteorology, Bangalore, 1998

•Spera D.A. (Ed.), Wind Turbine Technology: Fundamental Concepts

of Wind Turbine Engineering, ASME Press, New York, 1994.

•Sukhatme S.P., Solar Energy, 2nd Ed., Tata McGraw-Hill Publishing

Co.Ltd, N.Delhi, 1996.

•http://www.windpower.org, Danish Wind Industry Association,

Copenhagen V, Denmark