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GFS E NGLISCH Luisa Johnen G1-1 04.05.10
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Renewable Energy
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Generally information Development Solar collector Photovoltaic Hydropower Advantages and disadvantages Potential Structure
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What is it? -alternative to fossil fuels -rebuild themselves or are indefinitely available Why? -protect the environment -reduces the production of greenhouse gases -do something against the climate change - fossil fuels are limited other source of energy How? - solar energy, geothermal energy, wind power or hydropower Generally information
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Development
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Change of solar radiation to heat 1.500.000 solar energy plants in Germany Idea originates from a hosepipe Solar collector
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Solar radiation Glass Cold water Warm waterTube Isolation Absorber Heat radiation Tube Glass Vacuum Absorber Isolation
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Drinking water Cold water Collector Solar radiation Cistern Cooling water Solar collector
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Differences Photovoltaic and Solar collectors PhotovoltaicSolar collector - electric energy - efficiency: 14-18% - life span: 30 years - heath - efficiency: 75- 85% - life span: 40 years
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600.000 households in Germany produces electrical energy Photovoltaic
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Photovoltaic cell inverter Public network
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8000 hydropower plants in Germany biggest plant of Germany in Thüringen biggest plant of the world is the Three Gorges Dam in China Hydropower
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Dam Generator Turbine Water Hydropower
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- simple and fast construction - indefinitely and worldwide available -produces no greenhouse gases during operation - high costs - solar radiation sticks to weather, time of the day and season no constant energy supply possible Solar energy Advantages and disadvantages
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- no greenhouse gases - simple construction - hydropower plants durable - high efficiency - loss of important living space in the water - impairment of nature and landscape - fish die because of the turbines Advantages and disadvantages Hydropower
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half an hour: more energy than the world need in one year survey of 2008: 30% in 2020 50% in 2030 Potential
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http://en.wikipedia.org/wiki/Renewable_energy http://www.soolux.com/uploads/tx_sftextbox/Erneuerbare- Energien-am-Gesamtverbrauch-98-07.JPG http://www.waermewechsel.de/fileadmin/content/Wissen- Daten/Erneuerbar_Heizen/Anteile_Waermeverbrauch_2008.jpg http://de.wikipedia.org/wiki/Sonnenenergie http://de.wikipedia.org/wiki/Wasserkraft http://de.wikipedia.org/wiki/Sonnenkollektor http://www.solarbusiness.de/fakten/sonnenenergie-die- populaere/alle-setzen-auf-die-sonne/ http://www.erneuerbare-energien.de/inhalt/42386/5466/ Sources
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