…. electricity & renewable resources part 1: electricity and renewable energy most electricity...
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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!