Energy Efficiency and Renewable Energy G Tyler Millers
Energy Efficiency and Renewable Energy G. Tyler Miller’s Living in the Environment 14 th Edition Chapter 18
Key Concepts Ø Improving energy efficiency Ø Types and uses of solar energy Ø Types and uses of flowing water Ø Uses of wind energy Ø Types and uses of biomass Ø Use of geothermal energy Ø Use of hydrogen as a fuel Ø Decentralized power systems
The Importance of Improving Energy Efficiency Ø Energy efficiency Ø Net energy efficiency Least Efficient Ø Incandescent lights Ø Nuclear power plants Ø Internal combustion engine
Energy Efficiencies Ways to Improve Energy Efficiency (Fig. 18 -5 p. 381) Ø Cogeneration Ø Efficient electric motors Ø High-efficiency lighting Ø Increasing fuel economy Ø Alternative vehicles Ø Insulation Ø Plug leaks
Hybrid and Fuel Cell Cars Ø Fuel cells Ø Hybrid electricinternal combustion engine
Using Solar Energy to Provide High-Temperature Heat and Electricity Ø Solar thermal systems * Ø Photovoltaic (PV) cells
Using Solar Energy to Provide Heat Ø Passive solar heating Examples: Enertia home Ø Active solar heating Solar thermal Photovoltaic Earthships Fig. 18 -16 p. 391
Producing Electricity from Moving Water Ø Large-scale hydropower Ø Tidal power plant Ø Small-scale hydropower Ø Wave power plant * Ø Pumped-storage hydropower *
Producing Electricity from Wind
Producing Energy from Biomass Ø Biomass and biofuels Ø Crop residues Ø Animal manure * Ø Biogas Ø Ethanol Ø Methanol
Bio-fuels Overview Ethanol pros cons Methanol
Geothermal Energy Ø Geothermal heat pumps Ø Geothermal exchange Ø Dry and wet steam Ø Hot water Ø Molten rock (magma) Ø Hot dry-rock zones examples
The Hydrogen Revolution Ø Environmentally friendly hydrogen Ø Extracting hydrogen efficiently Ø Storing hydrogen Ø Fuel cells Fig. 18 -31 p. 403
Entering the Age of Decentralized Micropower Ø Decentralized power systems Ø Micropower systems Fig. 18 -32 p. 405
Solutions: A Sustainable Energy Strategy Fig. 18 -35 p. 407
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