The document discusses windmills and how they can be used to generate power and provide irrigation. It describes the history of windmills and how they work by capturing kinetic energy from wind using rotating blades or sails. Modern windmills have rotors connected to generators to produce electricity and can be used for industrial applications, telecommunications, and supplying remote areas with power. The key components of a windmill include the foundation, tower, rotor blades, nacelle, shaft, and motor.
2. INTRODUCTION
HISTORY
WIND ENERGY WHERE IT IS FROM
WHAT IS WINDMILL???
CLASSIFICATION
PARTS
EXPLAINATION
WORKING PRINCIPLE
DESIGN
FUNCTIONS
APPLICATIONS
ADVANTAGES
DISADVANTAGES
CONCLUSION
3. Wind power is a good renewable energy source.
Wind results from air in motion. Air in motion
arises from a pressure gradient.
Kinetic energy from wind can be utilized to run
wind mills to produce electricity.
4. The earliest known wind powered grain mills
and water pumps used by Persians.
DANIEL HALLADAY who began inventing
windmills in 1854.
6. Wind energy is a form of solar energy.Wind describes the
process by which wind to generate electricity.
Wind is the stabilization movement of air between areas of high
and low atmospheric pressure,created by uneven heating of the
Earths surfaces: land ,water ,and air
WIND ENERGY-WHERE IT COMES FROM?
8. Many types of clean and renewable energy sources can be
used in the production of electrical energy .These includes
(1)Solar energy(solar pannels)
(2)Wind energy
(3)Magnet(Faradayss law EMI)
DIFFERENT WAYS OF
PRODUCING ELECTRICITY:
9. A Wind mill is a device for converting
wind power to mechanical rotation with a
low velocity turbine designed for
compressible fluid.
WHAT IS WINDMILL???
11. Windmills are classified according to:
1. The way of axis of rotation of rotor:
(a) Horizantal axis wind mill: Axis of rotation in horizantal with parallel
(respect) to direction of wind stream
The horizantal axis type windmill are further classified into:
(a) Multi blade type
(b) Sail type
(c) Propeller type
(d) Dutch type
CLASSIFICATION:
13. VERTICAL AXIS WIND MILLS
In this the axis of rotation is vertical
with respect to ground
The vertical axis windmill again classified into:
1. SAVONIOUS TYPE WINDMILL
2.DARRIEOUS TYPE WIND MILL
15. VERTICAL AXIS WINDMIL HORIZANTAL AXIS WINDMILL
1.Can spin in light breezes (m/s)
2.Capture winds from any direction
3.Long life span
4.Cost is less
5.No massive tall tower construction
1.High wind speed (>3m/s)
2.Requires yaw mechanism to spin
3.Less life span
4.Cost is more
5.Requires tall tower
DIFFERENCES:
16. 2. ACCORDING TO PRINCIPLE OF AERODYNAMICS:
(a) Lift type windmill (b) Drag type windmill
3. TYPE OF ROTOR USED IN TISSUE:
(a) horizontal axis windmills (b) sail type
(c) propeller type (d) dutch type
(e) savirious type (f) darriens type
4. BASED ON SPEED:
(a) low speed (b) high speed
19. DESIGN OF WINDMILL:
A windmill captures wind energy
and then uses a motor to convert it
to electrical energy
The design of a windmill is an
integral part how efficient it will be
When designing a windmill, one
Must decide on the size of the
turbine ,and size of the motor
20. LARGE TURBINE SMALL TURBINE
1. Delivery of electricity at lower
costs
1. Electricity at lower costs
2. Independent of size 2. Smaller in size
3.Well suited for offshore
windplants
3.Well suited for local electrical
grids
4. Extremely efficient 4. less efficient
5. Require more force
(mechanical) to start in motion
5. Requires small part of energy
to start wind at high speed
21. Three blade turbine used of good stability.Rotor with odd no can
be considered
A rotor with even number creates stability problems for machine
with stiff structure
The lower most blade passes into the wind in front of the tower
because it has maximum power
22. BASIC PRINCIPLES
Flow of wind originates from two natural factors
(1).The absorption of solar energy on the earths surface
and in the atmosphere and
(2).The rotation of the earth about its axis its motion around
the sun
WORKING PRINCIPLE
24. FOUNDATION: Foundation give
support to wind turbine .
TOWER: It connect rotor and
foundation.
ROTOR AND ROTOR BLADES
:It is a rotating part which
converts energy to rotation.
NACELLE: Contains the key
components of wind turbine
FUNCTIONING:
25. HIGH SPEED SHAFT: Drives the motor by rotating at high speed.
COUPLING: Coupling is done between main shaft and transmission.
MOTOR: It generates electricity from rotation of shaft.Transmits high
power.
YAW DRAW: Turns nacelle with the rotor into wind using motors.
SPEED: The shaft speed is a very crucial factor in all types of motor.
START-UP SPEED: This is the wind speed at which the rotor starts turning