Energy Efficiency and Renewable Energy G. Tyler Miller’s Living in the Environment 14th 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 Use of geothermal energy Use of hydrogen as a fuel Decentralized power systems

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

Energy Efficiencies (Fig. 18-5 p. 381) Ways to Improve Energy Efficiency Cogeneration Efficient electric motors High-efficiency lighting Increasing fuel economy Alternative vehicles Insulation Plug leaks

Hybrid and Fuel Cell Cars Fuel cells Hybrid electric-internal combustion engine

Using Solar Energy to Provide High-Temperature Heat and Electricity Solar thermal systems * Photovoltaic (PV) cells

Using Solar Energy to Provide Heat Passive solar heating Active solar heating Examples: Enertia home Earthships Solar thermal Photovoltaic Fig. 18-16 p. 391

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

Producing Electricity from Wind

Producing Energy from Biomass Biomass and biofuels Crop residues Animal manure * Biogas Ethanol Methanol

Bio-fuels Bio-fuels Overview Ethanol pros cons Methanol

Geothermal Energy Geothermal heat pumps examples Geothermal exchange Dry and wet steam Hot water Molten rock (magma) Hot dry-rock zones

The Hydrogen Revolution Environmentally friendly hydrogen Extracting hydrogen efficiently Storing hydrogen Fuel cells Fig. 18-31 p. 403

Entering the Age of Decentralized Micropower Decentralized power systems Micropower systems Fig. 18-32 p. 405

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