Renewable Energy and Conservation Chapter 13

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

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

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

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

Indirect Solar Energy Wind Energy

Indirect Solar Energy Hydropower

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

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

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

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 Condensing furnaces “Superinsulated” buildings

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

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

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