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Eco-friendly Technologies

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by

Jonas Linke

on 15 January 2014

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Transcript of Eco-friendly Technologies

Eco-friendly Technologies
Types
1.) Wind Power
2.) Photovoltaic
3.) Hydroelectricity
Wind Power
Definiton
• technically and technologically methods to protect the environment and restoration of damaged eco systems
Main Topics
• disposal
• technical measures for water, -soil, -noise protection
• decrease of air pollution
• efficient use of renewable energies
• registration/monitoring of pollutants & environmental damage

• conversion of wind energy into a useful form of energy
--> wind turbines to make electrical power
--> windmills for mechanical power
--> windpumps for water pumping or drainage
• generation of electricity with wind power stations most important form of use of energy with wind
Disadvantages:
• no wind --> no energy
• other power stations necessary
Advantages:
• just little place necessary
• profitable
• no emission
Future:
• more off shore wind parks --> no noise pollution for population
Structure
1.) Defintion/Main Topics
2.)Types of technology
2.1.) Wind Power
2.2.) Photovoltaic
2.3.) Hydroelectricity
3.) Future
Sources
Text:
http://de.wikipedia.org/wiki/Umwelttechnik
http://en.wikipedia.org/wiki/Wind_power
http://www.welt.de/wirtschaft/energie/specials/wind/article8795070/Das-sind-die-Nachteile-und-Vorteile-von-Windenergie.html
http://www.zuhause3.de/page/photovoltaik-definition-erklaerung
http://www.energiewelt.de/web/cms/de/1202380/energieberatung/solarenergie-photovoltaik/photovoltaik-anlagen/
http://en.wikipedia.org/wiki/Photovoltaic
http://en.wikipedia.org/wiki/Hydroelectricity
http://www.stromgewinnung.com/wasserkraftwerk.shtml
Pictures:
http://www.mobilegeeks.de/wp-content/uploads/2013/05/iss-sta2.jpg
http://www.forwind.de/forwind/files/baltic_2.jpg
http://en.wikipedia.org/wiki/File:Hydroelectric_dam.svg
http://www.boell.de/sites/default/files/uploads/2013/10/perovo_solar_park_ausschnitt.png
Photovoltaic
Hydroelectricity

method of generating electrical power by converting solar radiation into direct current electricity
• solar rays are striking on a photovoltaic cell, the solar cells, the radiation begins to move the electrons --> thus there is a current conduction
• produced energy --> stored in accumulators or applied to the power supply system
• since 1958: used in aerospace as awning
• usage on Earth: generation of electricity (installed on rooftops, in calculators and in open areas)
• electricity generated by hydropower, most widely used form of renewable energy
• water is moved between reservoirs at different elevations
• times of low electrical demand: excess generation capacity is used to pump water into higher reservoir
• times of high electrical demand: water released into lower reservoir through turbines --> electricity is generated
• very effective, ~90% of water power can be converted to electricity
• usually to be found at big lakes and gorges (Hohenwarte, 3-Gorges-Dam)
Advantages:
• produces much energy
• investing in photovoltaic is a gainful money investment
• regenerative, economic, environment-friendly, clean
• coal, gas and oil are saved --> less greenhouse gas emission
Disadvantages:
• price of a solar module is rather expensive
• doesn’t produce any energy during night
• temperature optimum --> decreases efficiency if the temperature is beneath or above the optimum
Advantages:
• no CO2 emission --> renewable kind of energy
• flood prevention through reservoir power stations
• produced energy independent from weather and time
Disadvantages:
• population transfer
• intervention in groundwater regime
• fishes die due to turbines and pumps
• climate-damaging gases when organic depositions decay
Future of this technologies
• Will develop/ get more efficient
• Usage will increase
• Necessary to restore damaged eco systems
• Use of renewal technologies to save natural resources (oil, coal)
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