Transcript chapter18
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
Energy efficiency
Net energy efficiency
Least Efficient
Incandescent lights
Nuclear power plants
Internal combustion engine
Energy Efficiencies
Ways to Improve Energy
Efficiency
(Fig. 18-5 p. 381)
Cogeneration
Efficient electric motors
High-efficiency lighting
Increasing fuel economy
Alternative vehicles
Insulation
Plug leaks
Hybrid and Fuel Cell Cars
Fuel cells
Hybrid electricinternal 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
Examples:
Enertia home
Active solar heating
Solar thermal
Photovoltaic
Earthships
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
Geothermal exchange
Dry and wet steam
Hot water
Molten rock (magma)
Hot dry-rock zones
examples
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