Chapter16 - AP Environmental Sciences: Renewable Energy...

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AP Environmental Sciences: Renewable Energy Renewable Energy Use in the United States Electricity Supply and Demand Examples of Direct Solar Energy Uses Examples of Indirect Solar Energy Uses 0.Wind 1.Water 2.Hydrogen Hurdles in Using Solar Energy 0.Collection 1.Conversion 2.Storage 3.Cost-effectiveness Direct Uses of Solar Energy: Heating = 25% U.S. Energy Budget Direct Uses of Solar Energy - Electricity Direct Uses of Solar Energy - Fuel Trees and Energy Absorption 0. Significant solar energy is converted to biomass (potential energy) by photosynthesis. Terms and Definitions: Solar Heating Systems 4.Active: moves water or air with pumps and blowers 5.Passive: moves water or air with natural convection currents or gravity Components of Active or Passive Solar Heating Systems?
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6.Flat-plate collector 7.Water-heat pumps 8.Heat exchanger 9.Improved insulation 10. Earthen berms Solar Energy From the Sun 1. Short wave lengths (sun) are higher energy than long wavelengths (Earth) Electromagnetic Energy 2. Wave energy transmits energy though the vacuum of space to the Earth. 3. We only “see” a small amount of it. Solar Energy Cycle 4. We get 99% of the Earth’s energy from the sun through various pathways. Photosynthesis: Solar Energy 5. Photosynthesis uses solar energy for the electron transport chain to change CO 2 sugar/starch USA Solar Energy Map 6. Some areas that have lots of cloudless sunshine could benefit greatly from solar energy units. Solar Energy Budget
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This note was uploaded on 03/26/2008 for the course ATMO 201 taught by Professor Alcorn during the Fall '06 term at Texas A&M.

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Chapter16 - AP Environmental Sciences: Renewable Energy...

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