1. Renewable Energy and Conservation
Chapter 13
Renewable Energy and Conservation

2. Direct Solar Energy
Solar energy distribution over the US

3. Direct Solar Energy
Heating Buildings and Water
Passive solar heating

4. Direct Solar Energy
Heating Buildings and Water
Passive solar heating

5. Direct Solar Energy
Heating Buildings and Water
Active solar heating

6. Direct Solar Energy
Solar Thermal Electric Generation

7. Direct Solar Energy
Photovoltaic Solar Cells

8. Direct Solar Energy
Photovoltaic Solar Cells
Solar shingles

9. Direct Solar Energy
Generating Costs of Electric Power Plants (2004)

10. Direct Solar Energy Solar-Generated Hydrogen Electrolysis of water
PV or wind generated electricity
Solar generated hydrogen
Electrolysis of water
Compression of Hydrogen for storage and transport
Usable energy
Combustion of hydrogen

11. Direct Solar Energy
Solar-Generated Hydrogen

12. Indirect Solar Energy Biomass Energy
Also possible to convert biomass to biogas or to liquids (methanol, ethanol).

13. Indirect Solar Energy Biomass Energy Advantages: Disadvantages:
reduces dependence on fossil fuels
lower level of pollutants
Disadvantages:
high land and water use
potential for deforestation / desertification

14. Indirect Solar Energy
Wind Energy

15. Indirect Solar Energy
Hydropower

16. Indirect Solar Energy Hydropower Impacts of Dam
changes natural flow of rivers
disrupts migratory fish patterns
reservoir-induced seismicity
potential dam breaks

17. Indirect Solar Energy Ocean Waves
Insert Fig a, b (note animation)

18. Warm water (ocean’s surface)
Indirect Solar Energy
Ocean Thermal Energy Conversion
Warm water (ocean’s surface)
Liquid ammonia
Heats
Ammonia Steam
Cold water (ocean’s depth)
Cools
Drives turbine
“Spent” Steam
Generates electricity

19. Other Renewable Energy Sources
Tidal Energy
Geothermal
Energy

20. Other Renewable Energy Sources
Tidal Energy
Geothermal Energy
- Geothermal Energy from Hot, Dry Rock
- Heating and Cooling Buildings with Geothermal Energy

21. Energy Solutions: Conservation and Efficiency
Provide examples that differentiate between energy conservation and energy efficiency

22. Energy Solutions: Conservation and Efficiency
Energy Consumption Trends and Economics
If economic growth continues in developing countries, these numbers will change.

23. Energy Solutions: Conservation and Efficiency
Energy Efficient Technologies
Compact fluorescent light bulbs
Condensing furnaces
“Superinsulated” buildings

24. Energy Solutions: Conservation and Efficiency
Energy Efficient Technologies
National Appliance Energy Conservation Act applies energy efficiency standards to modern appliances

25. Energy Solutions: Conservation and Efficiency
Energy Efficient Technologies
Cogeneration
Fuel Input
Generator
Electricity
Heat Recovery
Industrial Processes
Hot Water Heating
Heating Buildings
Additional Electricity

26. Energy Solutions: Conservation and Efficiency
Energy Efficient Technologies
Energy Savings in Commercial Buildings

27. Energy Solutions: Conservation and Efficiency
Energy Efficient Technologies
Energy Savings in Commercial Buildings