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Chapter 18

Chapter 18. Finish Monday, Test Tues/Wed. Section 1 Renewable Energy Today. Chapter 18. Passive Solar Heating. Section 1 Renewable Energy Today. Chapter 18. Active Solar Heating.

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Chapter 18

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  1. Chapter 18 Finish Monday, Test Tues/Wed

  2. Section 1 Renewable Energy Today Chapter 18 Passive Solar Heating

  3. Section 1 Renewable Energy Today Chapter 18 Active Solar Heating

  4. Stirling Solar System25 Kilowatt generator$250,000world’s most efficientuses hydrogen to run a small turbine

  5. Section 1 Renewable Energy Today Chapter 18 Photovoltaic Cells Sunlight falls on a semiconductor, causing it to release electrons. The electrons flow through a circuit that is complete when another semiconductor in the solar cell absorbs electrons and passes them on to the first semiconductor.

  6. Section 1 Renewable Energy Today Chapter 18 Wind Farms • The cost of wind power has been steadily falling as wind turbines have become more efficient.

  7. Section 1 Renewable Energy Today Chapter 18 Biomass—Power from Living Things

  8. Bio-fuels • Methane (manure, land fills, etc) • Biodiesel • Alcohol from corn grain • Alcohol from sugar cane • Alcohol from cellulose (corn stover or switchgrass) • “Cellulosic ethanol”

  9. Section 1 Renewable Energy Today Chapter 18 Hydroelectricity—Power from Moving Water

  10. Hydropower Advances • In-stream • low pressure • micro-hydropower.

  11. Section 1 Renewable Energy Today Chapter 18 Geothermal Energy—Power from the Earth

  12. Section 1 Renewable Energy Today Chapter 18 Geothermal Heat Pumps: Energy for Homes

  13. Section 2 Alternative Energy and Conservation Chapter 18 Tidal Power

  14. Section 2 Alternative Energy and Conservation Chapter 18 Ocean Thermal Energy Conservation

  15. Section 2 Alternative Energy and Conservation Chapter 18 Fuel Cells

  16. Fuel Cells can run on natural gas • Or any other hydrogen rich fuel, including gasoline. • Bloom Box delivers electricity (60 Minutes) • A power plant converts chemical energy to thermal energy to mechanical energy to electrical energy. Then loses energy to scrubbers and transmission. • A fuel cell leaves out the middle two steps, no pollution and can be set up in your back yard.

  17. Section 2 Alternative Energy and Conservation Chapter 18 Energy Efficiency • Most of our devices are fairly inefficient. More than 40 percent of all commercial energy used in the United States is wasted. • Increasing efficiency may involve sacrifices or investments in new technology.

  18. Section 2 Alternative Energy and Conservation Chapter 18 Cogeneration • production of two useful forms of energy from the same fuel source. • For example, the waste heat from an industrial furnace can power a steam turbine that produces electricity. • Small cogeneration systems have been used for years to supply heat and electricity to multiple buildings at specific sites.

  19. Section 2 Alternative Energy and Conservation Chapter 18 Hybrid Cars

  20. Section 2 Alternative Energy and Conservation Chapter 18 Conservation Around the Home

  21. Name______________hr___ 1. Concept Review 20 2. Concept Map 20 3. Video – Modern Marvels R.E. 15 4. Notes 15 5. Video – Nova, Saved by the Sun 10 6. Energy Problems 20 TOTAL 100 Chapter 18 Notebook

  22. Name______________hr___ 1. Concept Review 20 2. Concept Map 20 3. Video – Modern Marvels R.E. 15 4. Notes 15 5. Video – Nova, Saved by the Sun 10 6. Energy Problems 20 TOTAL 100 Chapter 18 Notebook

  23. Name______________hr___ 1. Concept Review 20 2. Concept Map 20 3. Video – Modern Marvels R.E. 15 4. Notes 15 5. Video – Nova, Saved by the Sun 10 6. Energy Problems 20 TOTAL 100 Chapter 18 Notebook

  24. Name______________hr___ 1. Concept Review 20 2. Concept Map 20 3. Video – Modern Marvels R.E. 15 4. Notes 15 5. Video – Nova, Saved by the Sun 10 6. Energy Problems 20 TOTAL 100 Chapter 18 Notebook

  25. Spring Science Nights • March 31st – Westwood View • April 14th – Fiske (KCK) • April 18th – Highlands

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