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 : Theme : 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