HOW WIND TURBINES WORK A BRIEF INTRODUCTION TO WIND ENERGY.
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Transcript of HOW WIND TURBINES WORK A BRIEF INTRODUCTION TO WIND ENERGY.
HOW W
IND T
URBINES
WORK
A BRIE
F IN
TRODUCTI
ON TO W
IND E
NERGY
HOW IS WIND CREATED?
• Temperatures vary according to the amount of sun it gets
• Uneven heating of the Earth's atmosphere and surface
• Balance between warm and cool air is constantly changing, creating wind.
WHAT IS WIND POWER?
Wind power is the conversion of kinetic energy in the wind to electrical energy.
The wind turns the blades which are attached to a rotor. The rotor spins and that is mechanical energy.
The shaft turns a generator which creates electricity.
The electricity is then added to the grid.
HOW DOES A GENERATOR WORK?
Needed: Conductor – loop of
wire Magnetic field –
electromagnets Conductor moves
within the magnetic field Conductor rotates
through a magnetic field
Magnets move back and forth through a looped wire
PARTS OF A WIND TURBINE?
Length Width Shape Weight Material Pitch Number Distance from
hub Others?
IMPORTANT BLADE CHARACTERISTICS
REAL BLADE DESIGNS
PAST BLADE DESIGNS
WHAT ARE THE SIZES OF TURBINES?
WHAT SIZE TURBINE GOES WHERE?
WHAT SIZE TURBINE GOES WHERE?
•Oil independence•Locally produced (jobs)•No air pollution (or CO2)•Uses no water•Renewable•Lower costBUT…•Bird and bat issues•Aesthetic issues•Intermittency
WHAT ARE THE PROS AND CONS?