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Created with Fabric.js 1.4.5 Solar Thermal Energy Generation Solar Thermal Energy Generation Wind is a never ending, natural resource 1. Reduced Environmental Impact- leads to reduced Global Warming 2. Requires Little Maintenance and work effort (letting nature do the work)3. "Wind power could account for 20 percent of the nation's electricity supply by 2030" Wind energy does not involve the use of any fossil fuels like natural gas, coal or oil. Wind turbines requirevast plots of land It's an efficient, renewable, never-ending resource, therefore power failures are almost non-existent Negatives Photovoltaics Wind energy is fueled by the wind, so it's a clean fuel source +25% Increase of wind energy usage per year, over the past decade +2.5% 2010 wind energy production was over 2.5% worldwide Vs How it works: Use reflective panels to concentrate solar energy onto a fluid. This fluid is then warmed up and turned into steam where it travels down the tower to a turbine, the steammoves the turbine generating electricity. Photovoltaic cell How it works: Invovles the direction conversion of light into energy. Some materials when exposed to photons produce an electron. Once this electron is harnessed it can be used to create energy. a thin semiconductor wafer is specially treated to form an electric field, positive on one side and negative on the other. When light energy strikes the solar cell, electrons are knocked loose from the atoms in the semiconductor material. Electrical conductors are attached to the positive and negative sides,forming an electrical circuit, in other wordsthe electrons can be captured in the form of an electric current. Solar Thermal Energy Generation Positives Negatives Photovoltaic Cells Positives Negatives No pollution. No pollution. Efficent:1000 acres of otherwise non-productive land to supply enough electricity for 50,000 homes Can only be built in areas which receive large amounts of sunlight. Requires large amounts of water which is usually scarce in the environments they function best in. Renewable Low maintenance. Could be much more efficent(Only convert 20% of sun rays to electricity) Weather Dependant Despite efficiency still takes up a lot of land. Mirrors track sun providing maximum amount of exposure Weather Dependant Quiet Lots of Manufacturing which creates pollution abundant "fuel" supply Can be installed on homes, unlike Solar Towers High costs Produces significantly less energy than solar towers Produce Direct Current which must be converted into Alternating Currents Quiet will help save money on energy costs
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