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Energy Efficiency and Renewable Energy

Energy Efficiency and Renewable Energy. G. Tyler Miller’s Living in the Environment 14 th Edition Chapter 18. Key Concepts. Improving energy efficiency. Types and uses of solar energy. Types and uses of flowing water. Uses of wind energy. Types and uses of biomass.

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Energy Efficiency and Renewable Energy

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  1. Energy Efficiency and Renewable Energy G. Tyler Miller’s Living in the Environment 14th Edition Chapter 18

  2. Key Concepts • Improving energy efficiency • Types and uses of solar energy • Types and uses of flowing water • Uses of wind energy • Types and uses of biomass • Use of geothermal energy • Use of hydrogen as a fuel • Decentralized power systems

  3. The Importance of Improving Energy Efficiency • Energy efficiency • Net energy efficiency Least Efficient • Incandescent lights • Nuclear power plants • Internal combustion engine

  4. Ways to Improve Energy Efficiency • Cogeneration • Efficient electric motors • High-efficiency lighting • Increasing fuel economy • Alternative vehicles • Insulation • Plug leaks

  5. Using Solar Energy to Provide High-Temperature Heat and Electricity Introduction to Solar Energy Photovoltaic PV Cell – the Next Generation Solar generators

  6. Using Solar Energy to Provide Heat • Active solar heating • Passive solar heating Requires an input of electricity to circulate hot water Examples: Enertia home and Earthships

  7. Producing Electricity from Moving Water • Large-scale hydropower • Small-scale hydropower • Pumped-storage hydropower • Tidal power plant • Wave power plant

  8. Producing Electricity from Wind

  9. Producing Energy from Biomass • Biogas • Biofuels Is Ethanol the Solution? Waste to energy Microalgae diesel Fat to Biofuel • Animal manure Anaerobic Digestor • Crop residues Cellulosic ethanol

  10. Geothermal Energy Examples - Iceland • Geothermal heat pumps • Geothermal exchange • Dry and wet steam • Hot water • Molten rock (magma) • Hot dry-rock zones

  11. The Hydrogen Revolution • Environmentally friendly hydrogen • Extracting hydrogen efficiently • Storing hydrogen • Fuel cells

  12. Entering the Age of Decentralized Micropower • Decentralized power systems • Micropower systems

  13. Solutions: A Sustainable Energy Strategy Fig. 18-35 p. 407

  14. Hybrid, Electric and Fuel Cell Cars • Hybrid electric-internal combustion engine • Electric • Fuel cells

  15. Transportation : Cars of the future? Which of these solutions do you see yourself taking advantage of in the future? Why? What is our best solution for the future? What are the advantages and disadvantages of each solution? Biofuel Solution? Ethanol: ABC – Is Ethanol the Solution? Biodiesel: Hydrogen Solution? Why has hydrogen had such limited success? Hybrids & Electric Cars? Limited power? Hypercars? What is the best way to improve cars? Will we be driving cars in the future?

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