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ELECTRICITY & RENEWABLE RESOURCES

Part 1: Electricity and Renewable Energy

• Most electricity sources have three main parts– The fuel source– The turbine– The generator

Part 1: Electricity and Renewable Energy

• A simple generator

• Larger generators use the same principle

* Pictures from http://www.childrensuniversity.manchester.ac.uk/interactives/science/energy/electricity.asp

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Part 1: Electricity and Renewable Energy

• COAL, OIL OR GAS– Fuel burnt to turn water to steam– Steam turns turbine– Turbine turns generator *

Part 1: Electricity and Renewable Energy

• HYDRO-ELECTRIC POWER– Lots of water dropped through large wheel– Wheel turns generator

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Part 1: Electricity and Renewable Energy

• NUCLEAR POWER– Fuel of radioactive uranium– Uranium atoms are split, creating radiation and heat– Heat used to make steam

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Part 1: Electricity and Renewable Energy

• BIOMASS POWER– Burn trees, shrubs, manure, rubbish; or burn gases

from these– Creates steam

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Part 1: Electricity and Renewable Energy

• GEOTHERMAL– Uses steam from hot water reservoirs deep

below the Earth

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Part 1: Electricity and Renewable Energy

• SOLAR POWER– Uses special panels called “photovoltaic cells”– Cells produce electricity when sunlight falls on them

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Part 1: Electricity and Renewable Energy

• TIDAL AND WIND TURBINES– Wind or ocean tides rotate blades which turn

generator

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Part 1: Electricity and Renewable Energy

• Electricity generation is a major CO2 emissions culprit

• Some methods produce more than others

• Some produce no CO2 at all

Part 1: Electricity and Renewable Energy

• RENEWABLE– Fuel won’t run out– Most don’t produce greenhouse gases

• NON-RENEWABLE– Fuel will run out– Most produce greenhouse gases

WELCOME TO THE

UNITED NATIONS CLIMATE CHANGE ASSEMBLY

SAY ANY LINE!

Nuclear Power! Nuclear Power!Oil Power! Oil Power!

Coal Power! Coal Power! Coal Power!Solar Power! Solar Power!

Hydro Power! Hydro Power! Biomass Power! Biomass Power!

Wind Power! Wind Power!

WHICH ONE IS BEST?

Case Study from an EWB Project –

Sustainable Energy Options for the

Uluru Children’s Home

(that’s Uluru in India, not Australia!!)

Uluru Children’s Home –Project Introduction

AIMS:– Reliability of

Power Supply– Undertake

Energy Audit– Identify

Sustainable Energy Options

Information gatheringOverall Energy breakdown (MJ/yr)

Electricity - Uluru Childrens Home, 45,128

Electricity - Uluru Health Care Clinic, 7,220

Gas BottleUluru Childrens Home, 48,406 Kerosene

Uluru Health Care Clinic, 1,017

KeroseneUluru Childrens Home, 2,007

GeneratorUluru Childrens Home, 14,262

PetrolVehicles, 31,770

DieselVehicles, 24,190

Electricity - Kamala Avenue, 100

UCH Cooking Gas Options

UCH - Sustainable Cooking Options

• Community Solar Dish Cooker

UCH - Sustainable Cooking Options

• Biogas system

Cooking gas can be produced from food scraps, cow dung and other agro-waste

UCH Electricity

options

UCH Electrical Load and Cost Breakdown

CoolingMJ 16,252 /yr

EntertainmentMJ 236/yr

KitchenMJ 1632/yr

HousekeepingMJ 1279/yr Other Appliances

MJ 1463 /yr

LightingMJ 24,408 / yr

Water PumpsMJ 3967 /yr

Hot Water SystemsMJ 1266 /yr

ComputersMJ 8887 /yr

Rs. / yr

Rs. /yr

Rs. / yr 31,295

5,086

1,624

11,395

2,093

303

1,640

Rs. /yr

20,838

Rs. /yr

Rs. /yr

1,876

Rs. /yr

Rs. /yr

Rs. /yr

UCH - Electricity breakdown

•36kWh/day 36kWh/day average average electricity electricity demanddemand•Cost of Cost of electricity per electricity per year Rs. 58,072 year Rs. 58,072 or AUS $1760or AUS $1760

Energy Efficiency Options

• Replace remaining incandescent bulbs with energy efficient fluorescent lights

• 70% reduction in lights left on at night

• Reduce water pumping by fixing leaking bore water tank

• Replace the fridge seal in UCH kitchen

Sustainable Electricity Options

Two power sources were suggested, to power electricity use at the Uluru Childrens’ Home:

• Solar • Wind

UCH Transport options

Transport use breakdown

Summary of Use for petrol vehicle during Dec 08

To Marakkanam for petrolMJ 89,485 /yr

To pick up & drop Music Master & Dance Master.

MJ 73,424 /yr

To pick up & drop Dr. Benita Marian in the ECR.

MJ 14,532 /yr

To go to Pondicherry pick up flower vase & Diesel for generator.

MJ 76,483 /yr To pick up AM from ECR and to drop

Founder at clinic.MJ 14,532 /yr

To Cheyyur registry office & backMJ 22,945 /yr To VAO's office and back

MJ 13,767 /yr

To ECR for bank workMJ 24,475 /yr

Pick up coconut from Vembanur MJ 9,178 /yr

Drop tutors homeMJ 55,068 /yr

Pick up gas cyclinder MJ 13,767 /yr

Pick up vegetables/provisions MJ 45,890 /yr

Drop children at secondary school and pick up

MJ 217,977 /yr

69,958

276,917

58,298

17,489

29,149 17,489

31,092

11,660

113,682

93,277

18,461

18,461 97,164

Rs. /yr

Rs. /yr

Rs. /yr

Rs. /yr

Rs. /yrRs. /yr

Rs. /yr

Rs. /yr

Rs. /yr

Rs. /yrRs. /yr

Rs. /yr

Rs. /yr

Transport -Diesel & Petrol reduction options

• Children bike to school

• Coordinate activities to reduce trips

• Purchase an auto-rickshaw

The Assignment: Calculate your carbon footprint!

• Calculate your carbon footprint!– Go to www.1degree.com.au/carbon_calculator– Do the quiz– Record your footprint and bring it to the next climate

change session– Set a new goal for your future carbon footprint

The Assignment: Calculate your carbon footprint!

• Due date for the assignment is the next and final climate change presentation.

• Some of you may be asked to show the class what you’ve done so be thorough! There may be prizes!

Next time…

• We will discuss the findings of your assignment

• The Great Global Warming Quiz Game Show

• More tips for how you can help combat climate change

Thanks for your attention!

Remember to turn off electrical appliances when

they aren’t being used, walk or ride a bike instead and

be emissions aware!