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21/04/23 1
The renewable energiesThe renewable energiesA hope for the future?A hope for the future?
11 April 200811 April 2008
ZARDOUA BrahimMagistère PCM1
Ecole Normale Supérieure de Cachan
21/04/23 2
The renewable energies Home
I. Renewable energy. Why?
1. Energy : Present and future2. Global warming
3. Effects on environment
II. Different forms of renewable energy
1. What does « renewable energy » mean again?2. Various forms of renewable energy (Solar power, geothermal
power, wind power, hydroelectric power, biomass, biogas...)
III. Conclusion
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HomeII.Renewable energy. Why ?
1. Energy : Present and future
21/04/23 4
HomeII.Renewable energy. Why ?
1. Energy : Present and future
1 Gtep = 42 GJ
21/04/23 5
HomeII.Renewable energy. Why ?
2. Global warming
http://upload.wikimedia.org/wikipedia/commons/9/90/CO2-Temp.png
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II.Renewable energy. Why ?Home
3. Effects on environment
Glaciers melting
21/04/23 7
II.Renewable energy. Why ?Home
3. Effects on environment
Glaciers melting
Most powerful and frequent hurricanes
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II.Renewable energy. Why ?Home
3. Effects on environment
Glaciers melting
Most powerful and frequent hurricanes
Drought
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HomeII.Different forms of renewable energy
1. What does « renewable energy » mean again ?
Natural sources
Clean, available, and economical
Heat and electricity
Various forms : solar power, water power, geothermal power, wind power, biomass, biogas...
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HomeII.Different forms of renewable energy
2. Various forms of renewable energya. Solar power
Solar power tower (10MW), California Solar power tower (11MW), Seville
Photovoltaic panels (electricity) Solar thermal panels (hot water)
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HomeII.Different forms of renewable energy
2. Various forms of renewable energya. Solar power
Parabolic Trough Solar (electricity)
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HomeII.Different forms renewable energy
2. Various forms of renewable energyb. Geothermal power
Clean, sainstable and reusable
Electricity, hot water, space heating
Iceland : 17% electricity
87% hot water
Krafla Geothermal Station in Northest of Iceland
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HomeII.Different forms of renewable energy
2. Various forms of renewable energyb. Geothermal power
Three types :
Médium and high temperature sources (100 to 150°C) : 3000 to 5000 m, electricity
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HomeII.Different forms of renewable energy
2. Various forms of renewable energyb. Geothermal power
Three types :
Médium and high temperature sources (100 to 150°C) : 3000 to 5000 m, electricity
A low-temperature source (30 to 100°C) : 1500 to 2500 m, heating network
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HomeII.Different forms of renewable energy
2. Various forms of renewable energyb. Geothermal power
Three types :
Médium and high temperature sources (100 to 150°C) : 3000 to 5000 m, electricity
A low-temperature source (30 to 100°C) : 1500 to 2500 m, heating network
A surface or very low-temperature source (T less than 30°C) : to heat a building (geothermal heat pump)
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HomeII.Different forms of renewable energy
2. Various forms of renewable energyb. Geothermal power
Three types :
Médium and high temperature sources (100 to 150°C) : 3000 to 5000 m, electricity
A low-temperature source (30 to 100°C) : 1500 to 2500 m, heating network
A surface or very low-temperature source (T less than 30°C) : to heat a building (geothermal heat pump)
21/04/23 17
HomeII.Different forms of renewable energy
2. Various forms of renewable energiesc. Wind power
Electricity
Clean, available
Reduces greenhouse gas emissions
Cheap
Wind turbine : 1MW
Offshore wind turbines near Copenhagen
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HomeII.Different forms of renewable energy
2. Various forms of renewable energyd. Hydroelectric power
Electricity => hydroelectricity
No carbon dioxide, no greenhouse gas emissions
19% of world electricity
75% of renewable
The Three Gorges Dam (22,5 GW), China
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HomeII.Different forms of renewable energy
2. Various forms of renewable energye. Biomass, Biogas
Decomposing organic matter
Applications : Domestic heating, electricity production
Carbon neutral
Biogas : methanization, fermentation of biomass
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HomeII.Different forms of renewable energy
2. Various forms of renewable energye. Biomass, Biogas
Biofuel : an alternative to petroleum ?
21/04/23 21
HomeII.Different forms of renewable energy
2. Various forms of renewable energye. Biomass, Biogas
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Thank you for Thank you for your attentionyour attention
Do you have questions ?Do you have questions ?
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Links and referencesLinks and references
Gaz De France :Gaz De France :
https://www.gazdefrance.com/EN/D/1374/renewable-energies.html
US department of energy :US department of energy :
http://www.energy.gov/energysources/index.htmlhttp://www.energy.gov/energysources/index.htmlhttp://www.planete-energies.com/content/renewable-energies.htmlhttp://www.planete-energies.com/content/renewable-energies.html
« Energie et Environnement »« Energie et Environnement », by D. Sylvain teacher in , by D. Sylvain teacher in IPNIPN (Institut de (Institut de Physique Nucléaire d'Orsay), researcher in Physique Nucléaire d'Orsay), researcher in CNRSCNRS
http://en.wikipedia.org/wiki/Renewable_energyhttp://en.wikipedia.org/wiki/Renewable_energyhttp://en.wikipedia.org/wiki/Effects_of_global_warminghttp://en.wikipedia.org/wiki/Effects_of_global_warminghttp://www.nrel.gov/cleanhttp://www.nrel.gov/clean energy/bioenergy.html energy/bioenergy.htmlhttp://www.solarnavigator.net/solar_panels.htmhttp://www.solarnavigator.net/solar_panels.htm