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Chapter 14 Renewable Energy. mostly coal powered.

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Presentation on theme: "Chapter 14 Renewable Energy. mostly coal powered."— Presentation transcript:

1 Chapter 14 Renewable Energy

2 mostly coal powered

3 Sources of Electricity in France

4 Renewable Sunlight, wind, falling H 2 O, geothermal Sunlight, wind, falling H 2 O, geothermal Not fossil fuels, not nuclear Not fossil fuels, not nuclear

5 Indirect Solar power How does it affect… How does it affect… Wind? Wind? Hydropower? Hydropower? Firewood? Firewood? Hydro carbon fuels? Hydro carbon fuels? Nuclear and Geothermal are not indirect solar Nuclear and Geothermal are not indirect solar

6 Passive Solar Heating Large south-facing windows, heavy drapes to trap heat at night, interior bricks to trap heat Large south-facing windows, heavy drapes to trap heat at night, interior bricks to trap heat Shade windows in summer Shade windows in summer Even though back up systems are required, and solar heating may only lessen the need for heating oil a few %, it will help us adapt to diminishing oil supplies. Even though back up systems are required, and solar heating may only lessen the need for heating oil a few %, it will help us adapt to diminishing oil supplies.

7 Photovoltaics Active solar energy Active solar energy Photovoltaic (PV) panels can be used to convert the energy from the sun into electricty. Photovoltaic (PV) panels can be used to convert the energy from the sun into electricty. “Every hour enough solar energy reaches the Earth to meet the world's energy demand for a whole year." http://www.eere.energy.gov/solar/video/pv3.mov http://www.eere.energy.gov/solar/video/pv3.mov http://www.eere.energy.gov/solar/video/pv3.mov

8 Did you know that… Power towers are sun tracking mirrors used to focus sunlight on a central boiler Power towers are sun tracking mirrors used to focus sunlight on a central boiler You can cook food in a solar oven You can cook food in a solar oven CH 4 (methane) results from digesting manure anaerobically CH 4 (methane) results from digesting manure anaerobically Alcohol results from fermenting sugars or starch anaerobically Alcohol results from fermenting sugars or starch anaerobically


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