Renewable Energy and Conservation Chapter 13 Renewable Energy and Conservation

Direct Solar Energy Solar energy distribution over the US

Direct Solar Energy Heating Buildings and Water Passive solar heating

Direct Solar Energy Heating Buildings and Water Passive solar heating

Direct Solar Energy Heating Buildings and Water Active solar heating

Direct Solar Energy Solar Thermal Electric Generation

Direct Solar Energy Photovoltaic Solar Cells

Direct Solar Energy Photovoltaic Solar Cells Solar shingles

Generating Costs of Electric Power Plants (2004)

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

Direct Solar Energy Solar-Generated Hydrogen

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

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

Indirect Solar Energy Wind Energy

Indirect Solar Energy Hydropower

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

Indirect Solar Energy Ocean Waves Insert Fig 13.11 a, b (note animation)

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

Other Renewable Energy Sources Tidal Energy Geothermal Energy

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

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

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

Energy Solutions: Conservation and Efficiency Energy Efficient Technologies Compact fluorescent light bulbs “Superinsulated” buildings Cogeneration systems

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

Energy Solutions: Conservation and Efficiency Energy Efficient Technologies National Appliance Energy Conservation Act applies energy efficiency standards to & requires Energy Guide labels on modern appliances

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

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