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Chapter 10: Renewable Energy Chapter 10: Renewable Energy
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Energy Independence
Central Question
10.1-10.3 Science
10.1 Solar energy can be used as a heat source and to generate electricity
SUNLIGHT QUANTIFIED
AVERAGE ANNUAL SOLAR ENERGY RECEIVED FROM JUNE 1983 TO JUNE 2005
Concentrating Solar Power
A PHOTOVOLTAIC CELL CONVERTS SOLAR ENERGY (PHOTONS) TO ELECTRIC ENERGY
Photovoltaic Generation
Think About It
EVOLUTION OF WIND POWER
10.2 Wind, water, and geothermal energy add to the renewable energy portfolio
Wind Energy
SEA AND LAND BREEZES
DAY: SEA BREEZE
NIGHT: LAND BREEZE
WIND SPEED AT 50 METERS’ ELEVATION AVERAGED FROM JUNE 1983 TO JUNE 1993
Water Power
FLOWING WATER: A USEFUL SOURCE OF ENERGY
hydroelectric power
hydrokinetic power A
BAY OF FUNDY: A PLACE OF MASSIVE TIDAL FLOW
Wave Energy
WAVE POWER DEMONSTRATED
Geothermal Energy
Think About It
THREE BASIC GEOTHERMAL POWER PLANT DESIGNS
10.3 Biomass fuels represent stored chemical energy
Biofuels from Plants
BASIC STEPS IN CELLULOSIC ETHANOL PRODUCTION
Biofuels from Algae
Think About It
10.1-10.3 Science: Summary
10.4–10.7 Issues
10.4 Solar power remains costly and can damage the environment
Habitat Destruction and Fragmentation
Water Consumption by Concentrating Solar Power
Competitive Energy Returns on Investment
Think About It
10.5 Wind turbines and transmission lines kill birds and bats
Wind Turbines
TWO BAT SPECIES VULNERABLE TO WIND ENERGY DEVELOPMENT
Transmission Lines
VULNERABILITY TO ELECTRICAL TRANSMISSION LINES
Wind Developments Harm Wildlife Habitat
Think About It
PRAIRIE BIRDS IMPACTED BY WIND DEVELOPMENT
Reservoirs Can Harm Water Quality
Impacts on Human Populations
Think About It
HUMAN IMPACTS OF LARGE-SCALE HYDROELECTRIC DEVELOPMENT
10.7 Biofuel development can reduce food supplies and harm the environment
Think About It
10.4–10.7 Issues: Summary
10.8-10.11 Solutions
10.8 Smart solutions to issues associated with solar power are under development
FIGURE 10.38 A
Producing Solar Power Day and Night
Water-Saving Solar Concentrating Power
Distributed Rooftop Generation
Policy Initiatives and Incentives
Think About It
10.9 Less damaging wind-generation strategies are under development
Reducing Bird Mortality
Decreasing Hazards to Bats
Reducing Transmission Line Impacts
Think About It
10.10 Downsizing can mitigate the impacts of hydroelectric development
Run-of-the-River Hydroelectric Systems
Retrofitting Existing Dams
Dam-Free Hydropower
Think About It
10.11 Less damaging, more efficient biofuels are under development as alternatives to oil-based fuels
Reducing Deforestation Due to Biofuels Production
Algae Can Turn Waste into Fuel
Cellulosic Ethanol
REDUCING THE IMPACTS OF BIOFUEL PRODUCTION
Think About It
10.8-10.11 Solutions: Summary
Central Question: Can we develop renewable energy resources to help sustain a thriving economy without adversely affecting the environment?
10.1–10.3 Science
10.4–10.7 Issues
Renewable Energy and You
☐ Stay informed and engaged in energy issues.
☐ Consume energy wisely.
Use energy-efficient transportation.
10.8–10.11 Solutions
Answer the Central Question:
Chapter 10
Review Questions
1. What sources of renewable energy does the Danish island of Samsø use to power its communities?
2. Which of the following is a major technical problem associated with solar energy?
3. Which of the following is not a form of “water power”?
4. What is the major challenge to producing cellulosic ethanol?
5. Which of the following has the highest energy return on energy invested (EROEI)?
6. Which of these statements about wind turbines and bird mortality is true?
7. What can be done to reduce the environmental impacts of solar power?
8. How do new wind turbine designs mainly help in reducing bird collision deaths?
9. Which of the following is not an issue associated with biofuel development?
10. Which of the following statements about renewable energy development is correct?
Critical Analysis