Using repaks carbon calculator


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  • In terms of the schools – What are the main sources and uses of energy in schools? What areas have the greatest potential for wastage of energy? ANALYSE/SURVEY find out where energy usage is highest and where improvements can be made
  • Using repaks carbon calculator

    1. 1. ENERGY: USING THE REPAK CARBON CALCULATOR Ellen Murphy Green Schools Development Officer, An Taisce
    2. 2. WHERE DO WE GET OUR ENERGY FROM? <ul><li>Fossil fuels are the source of much of our energy, and are formed under intense pressure and heat over millions of years from the buried remains of plants and animals. </li></ul><ul><li>By burning these fossil fuels to release heat from the chemical energy they contain, steam can be raised in a power station boiler to drive a generator. </li></ul><ul><li>However, by burning fossil fuels we are releasing carbon dioxide (CO 2 ) into the atmosphere faster than plants can absorb it. </li></ul>
    3. 3. FOSSIL FUEL FORMATION <ul><li>Plants absorb carbon dioxide and release oxygen </li></ul><ul><li>Plants (and carbon) compact and decay </li></ul>
    4. 4. CURRENT SITUATION IN IRELAND <ul><li>92% of our oil is imported so we have a much greater dependence than the rest of Europe – </li></ul><ul><li>Indigenous production ~ 10% (mostly peat) </li></ul><ul><li>We only attain 4% of our energy needs from renewable technologies </li></ul>12 th May 2006 Carlow Kilkenny Energy Agency
    5. 5. CARBON CALCULATOR <ul><li>So what is your Carbon Footprint? </li></ul><ul><li>Most human activities produce carbon dioxide emissions . Such activities include transport, energy, food production and waste. A carbon footprint is a way to measure the amount of carbon emissions that an activity creates. </li></ul>
    6. 6. CARBON CALCULATOR <ul><li>The amount of carbon released into the atmosphere is measured in tonnes. The average person in the EU emits 11 tonnes of CO 2 per year . </li></ul><ul><li>The Irish fare very poorly when compared to this average; every person in Ireland is responsible for 17 tonnes of carbon entering our atmosphere every year! </li></ul><ul><li>Believe it or not, the ideal carbon footprint should be 2/3 tonnes per person per annum. </li></ul>
    8. 9. RESULTS
    9. 10. Where do we use Energy in schools Lighting Heating & Hot Water Appliances Energy
    10. 11. <ul><li>Think about where we use Energy in the school and at home? </li></ul><ul><ul><li>- Undertake an Appliance Audit. </li></ul></ul><ul><li>Can we Switch it OFF !!! </li></ul><ul><li>Where can we make savings? Start by reading the meter. </li></ul><ul><ul><li>- Read it to capture normal school activity, plus when the school is empty. </li></ul></ul><ul><li>Look at where that energy comes from? </li></ul>REVIEW YOUR ENERGY USE
    11. 12. WHAT IS 1 KWH? <ul><li>Electricity is measured in units. Each unit is equivalent to 1,000 watts of electricity used for one hour - or one kilowatt-hour (kWh). </li></ul>1 kWh in Lasts for an instant electric shower 7 to 10 min an immersion water heater 15 to 20 min a large ring on an electric cooker 20 to 40 min a kettle 20 to 40 min a tumble dryer 20 to 40 min a two-slice toaster 40 to 60 min a washing machine 70 to 100 min a dishwasher 70 to 100 min a desktop computer & monitor 4 to 6 hours a 28-inch TV 6 to 9 hours a 100 watt standard lightbulb 10 hours a 20 watt CFL lightbulb 50 hours
    12. 13. MONITOR YOUR ENERGY USE <ul><li>Once you build up a record of your energy readings, you can chart this to see if there are any unusual peaks </li></ul><ul><li>Look at what your appliance audit revealed – excessive equipment; are there items left on standby; unnecessary items; emersions & water heaters not switched off? </li></ul><ul><li>Appoint Energy Monitors / Wardens / Detectives! </li></ul><ul><li>Switch-it-off Campaigns </li></ul><ul><li>Surveys in the school and at home </li></ul><ul><li>Inform & Involve </li></ul>
    13. 14. ENERGY SOLUTIONS <ul><li>Are all office computers shut down at the end of each day? </li></ul><ul><li>Best-case: Switching off a computer at the end of each day can cut its energy consumption in half. </li></ul><ul><li>Are all computer monitors switched off during absences of 10 minutes or greater? </li></ul><ul><li>Best-case: If the computer is unattended for more than 10 minutes then the monitor should be turned off. </li></ul><ul><li>Are photocopiers/printers switched to standby mode when they are not in use for long periods and are they shut down at end of every working day? </li></ul><ul><li>Best-case: Photocopiers can consume large amounts of energy while inactive. Stand-by should commence within 10 minutes of last use. </li></ul><ul><li>Are timed plugs fitted to vending machines to make sure that they operate only during site hours? </li></ul><ul><li>Best-case: A vending machine that is left running continuously can cost over €600 a year to operate, so ensure that they are only powered up during site operating hours. </li></ul>
    14. 15. ENERGY SOLUTIONS <ul><li>Are water boilers left running continuously? </li></ul><ul><li>Best-case: Water boilers should be switched off outside of main usage hours; jug kettles can be used to boil water during these periods. </li></ul><ul><li>Are all hand dryers automatically activated? </li></ul><ul><li>Best-case: Automatic hand dryers should be installed, as they do not operate unless they are actually needed. </li></ul>
    15. 16. EXAMPLE: BOILER EFFICIENCY <ul><li>Has your school boiler been serviced and maintained regularly? </li></ul><ul><li>A 12kW oil boiler with an efficiency of 60% heats a house for 2,000 hours per year. If gas costs 7c/kwh, how much does it cost to run the boiler? </li></ul><ul><ul><li>12kW x 2,000hrs = 24,000kWh </li></ul></ul><ul><ul><li>24,000kWh / 0.6 = 40,000kWh </li></ul></ul><ul><ul><li>40,000kWh x 7c/kWh = €2,800 </li></ul></ul>
    16. 17. EXAMPLE: NEW BOILER <ul><li>If a new condensing boiler is installed with an efficiency of 90%, what will the running cost be per year? </li></ul><ul><ul><li>12kW x 2,000hrs = 24,000kWh </li></ul></ul><ul><ul><li>24,000kWh / 0.9 = 26,666kWh </li></ul></ul><ul><ul><li>26,666kWh x 7c/kWh = €1,866 </li></ul></ul><ul><ul><li>Saving of €934 per year </li></ul></ul>
    17. 18. WHAT ENVIRONMENTAL MANAGEMENT LIKE THE GREEN SCHOOLS PROGRAMME OFFERS <ul><li>Control over your energy use </li></ul><ul><li>“ You cannot monitor what you don’t measure!” </li></ul><ul><li>Awareness </li></ul><ul><ul><li>SEI estimate that 15-20% of energy savings can be made through behavioural changes </li></ul></ul><ul><ul><li>LOW COST savings </li></ul></ul><ul><li>Green Schools research: schools saving 3.65 million units of electricity per year </li></ul><ul><ul><li>That’s the equivalent of powering a small town! </li></ul></ul>
    18. 19. ENERGY RESOURCES <ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul><ul><li> </li></ul>