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“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