The objective of the communication is to show the possibilities for an aeolian generator when (it is) generating energy. One option is (will be) injecting the energy directly to the network and the other one is to produce hydrogen to store the energy. After that this hydrogen will be used in fuel batteries to produce electricity.The obtained hydrogen from conventional energies has a high ecological cost by the polluting gases discharge to the atmosphere. These gases produce serious damages in our surroundings, as the greenhouse effect and acid rain are examples of this.The hydrogen is considered a clean energy, when non-polluting energies are used to produce it. For example the renewable energies. In this case it is denominated green hydrogen. An option with promising future seems to be the production of hydrogen, with the energy generated in photovoltaic panels and aeolian generators. Further Information A) Quantification of the wind energyWhen the wind speed affects to an aeolian generator, forces take place on the shovels. These forces develop mechanical par and efforts on the mechanical elements of the aeolian generator. When the mechanical par developed by the turbine, is turning at a certain speed, produces a mechanical power that by means of the turn of the movable coil of the generator creates an exciting magnetic field that produces electrical energy.Generally, the aeolian generators have a gearbox or converter of par, which transforms the low wind speeds into more elevated speeds. Some turbines include systems of control of the step of shovel in order to regulate the quantity of power to be transformed. The systems that do not have this control are denominated step of fixed shovels or stall.In order to initiate the study of the wind power that hits on the shovels of the aeolian generator we will consider an infinitesimal volume of the wind tube that has a speed "v" and a thickness:(1) Fig. 2. Wind tube
SummaryEuropean Commission energy politics pleads to guarantee electrical energy supply and reduce emissions associated with the climatic change. This requires immediate performances to develop renewable energy sources, alternative fuels for transportation and the increase of the energy efficiency of systems.In this context, two technologies are attracting to the public and private sectors: the hydrogen, clean energetic vector that can be produced from any primary energy source (mainly wind and photovoltaic energy) and the cell fuels, very efficient devices to convert energy. This paper presents a revision of the different technologies of fuel cells susceptible of being used to generate electrical energy and cogeneration processes.
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