Introduction
What is Green Energy?Energy that has minimal negative impact to
the environmentNon-polluting source of producing energy
Why Green Energy?Deterioration of non-renewable energy sources
Climate changeImprove way of livingIntroductionEmphasis of Green
Energy
Team Member : Alvin Lai Benjamin TanSaundaraTze YongTheme :
Electricity
WIND ENERGYWhat is Wind Energy?Caused by convection of air
currents in Earths atmosphere
Why Wind Energy?Clean, Zero emissionsAvailability
How to Harness Wind Energy?Wind TurbinesHarnessing Wind
energyWind Turbines
Bahrain World Trade Center Manama, Bahrain3 skybridges, each
holding a 225kW wind turbine.Design of building channels the air
from the Persian Gulf
Problem Statement:What physical conditions can affect the
generated voltage by DIY wind turbine?OBJECTIVE:To create awareness
to the public about the importance of renewable energy.
To reduce carbon footprint of generating electricity.
To propose the use of wind energy to generate electricity.
Literature reviewWind turbine extract energy from windWind power
converts kinetic energy > wind to generate electricity or
mechanical power.
2 Types of wind turbines the horizontal axis wind turbines
(HAWT) the vertical axis wind turbine (VAWT)HAWT - commonly used -
fan styled bladesVAWT - egg beater styleFactors affecting the
output wind speed fan blades turbine shapes and
designMETHODOLOGYMaterials:Plastic bottleTin cansDynamoDiodesWall
fanMethod used:Manipulating the number of blades (3, 4, 5
Blades)Speed of the wall fan (3 blades only)Measure voltage
generatedProcedureObtain a dynamoThe making of the bladesMounting
of the blades (Using glue)Wind turbine placed in front of the wall
fan.
Experiment:Wind turbine with 3 bladesFan speed is
manipulatedVoltage generated recordedExperiment:Fan speed remained
constantNumber of blades varied (3,4, 5 blades)Voltage generated
recorded.Results and DataTable of fan speeds versus average value
of generated turbine with fixated 3 blades of wind turbineTable of
number of blades versus average value of generated turbine with
fixated fan speed of 3DiscussionFaradays lawFan speed increase,
change in (B)external magnetic field and (A)area of coil increase
and (t)change of time decrease, thus incresing the induced
voltage.Why not increase significanly ?Area of bladesShapes of
blades
Fan speeds versus average value of generated turbine2. Number of
blades versus average value of generated turbineFan speed increase
, induced voltage SHOULD increase, but constant.This is because of
,Number of blades increase, dynamo turn too fast , magnet inside
does not cut through flux completely ConclusionFan speed increase,
generated voltage increaseNumber of blades increase, generated
voltage constant
SuggestionBetter materialsStronger magnetShape of blades