Renewable energy
The main eadvantage of renewable energy is that it cannot be exhausted, because it arises directly from natural, regular or constant elements, linked to the energy of the sun, the ground or gravitation. Renewable energies are also "cleaner"(fewer CO2 emissions, less pollution) than the energies that are not renewable.
The principal renewable energies are:
· Hydro-electric power
· Wind energy
· Biomass energy
· Solar energy
· Geothermal science
· Marine energies
Hydro-electric
power
Hydropower
exploits the water of streams, waterfalls, even tides, to transform it into
electricity.
We can see
hydroelectric plants near rivers which capture all or part of the flow of a
river, and those requiring water supply:
Both kinds of
installations need dams.
Wind energy
A wind turbine is a means which allows wind energy to be converted into mechanical energy. This energy is then transformed almost all the time into electricity. France possesses the second European wind surface after Great Britain. An important development of the wind energy in France is indispensable to answer the objectives fixed by the European directive concerning renewable energies.
A wind turbine is a means which allows wind energy to be converted into mechanical energy. This energy is then transformed almost all the time into electricity. France possesses the second European wind surface after Great Britain. An important development of the wind energy in France is indispensable to answer the objectives fixed by the European directive concerning renewable energies.
Solar energy
Solar energy transforms the rays of the sun into electricity or into heat, using a variety of technologies. The photovoltaic solar energy produces some electricity via photovoltaic means, electricity which can be then put in electricity networks. The thermal solar energy produces some heat which can be used for the domestic heating or the production of warm water, for showers for example. Finally, solar energy thermodynamics produces some electricity via heat production
Solar energy transforms the rays of the sun into electricity or into heat, using a variety of technologies. The photovoltaic solar energy produces some electricity via photovoltaic means, electricity which can be then put in electricity networks. The thermal solar energy produces some heat which can be used for the domestic heating or the production of warm water, for showers for example. Finally, solar energy thermodynamics produces some electricity via heat production
Marine energies
Marine energies refer to all the technologies which allow energy to be produced, in particular electricity, from the various resources of the marine environment.
We can distinguish fossil fuels (oil, gas) from new renewable energies. These energies have an immense energy potential which have the added advantage of having a long-lasting perspective.
Marine energies refer to all the technologies which allow energy to be produced, in particular electricity, from the various resources of the marine environment.
We can distinguish fossil fuels (oil, gas) from new renewable energies. These energies have an immense energy potential which have the added advantage of having a long-lasting perspective.
Geothermal
science
Geothermal science or «heat from the ground " refers to all the applications allowing us to capture the heat contained underground or in the ground-waters (the temperature of the earth and the groundwater increases the closer we get to the center of the earth). According to the application, calories thus captured are of use to the production of heat and/or cold or to electricity production.
Geothermal science or «heat from the ground " refers to all the applications allowing us to capture the heat contained underground or in the ground-waters (the temperature of the earth and the groundwater increases the closer we get to the center of the earth). According to the application, calories thus captured are of use to the production of heat and/or cold or to electricity production.
Presentation of
the different kinds of geothermal science
There are various types of geothermal science with two big domains: heat production and/or the production of cold and electricity production.
There are various types of geothermal science with two big domains: heat production and/or the production of cold and electricity production.
Bouchet
Margot, Michellier Clara, Da Silva Jessica
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