GFS GFS ENGLISCHENGLISCH

Luisa Johnen G1-104.05.10

RenewableRenewable EnergyEnergy

Generally informationDevelopmentSolar collectorPhotovoltaicHydropowerAdvantages and disadvantagesPotential

StructureStructure

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

Development

Change of solar radiation to heat1.500.000 solar energy plants in

Germany Idea originates from a hosepipe

Solar collector

Solar radiation

Glass

Cold water

Warm waterTube

Isolation

Absorber

Heat radiation

Tube

GlassVacuum

Absorber

Isolation

Drinking water

Cold water

Collector

Solar radiation

Cistern

Cooling water

Solar collector

Differences Photovoltaic and Solar collectors

Photovoltaic Solar collector- electric energy- efficiency: 14-18%- life span: 30 years

- heath- efficiency: 75- 85% - life span: 40 years

600.000 households in Germany

produces electrical energy

Photovoltaic

Photovoltaic

Photovoltaic cell

inverter

Public network

• 8000 hydropower plants in Germany• biggest plant of Germany in Thüringen• biggest plant of the world is the Three Gorges

Dam in China

Hydropower

Dam

Generator

Turbine

Water

Hydropower

- 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

- 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

Potential

http://en.wikipedia.org/wiki/Renewable_energy http://www.soolux.com/uploads/tx_sftextbox/Erneuerbare-Energie

n-am-Gesamtverbrauch-98-07.JPG http://www.waermewechsel.de/fileadmin/content/Wissen-Daten/E

rneuerbar_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

Thank you for

listening!!