Solar energy
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What is photovoltaic solar energy
Photovoltaic solar energy is the process in which solar radiation is transformed into electricity.
It is possible to carry out the transformation of solar energy into photovoltaic energy through the properties of the semiconductor materials of which photovoltaic cells are manufactured.
He material semiconductor but used for Manufacture solar panels It is the silicon although currently it is being experienced with other much more efficient materials.
Energy is generated when sunlight photons affect one of faces of solar cells.
Solar thermal energy
Solar thermal energy consists in taking advantage of energy from the sun for use.
Within solar thermal energy we have two very different variants. It can be used to heat ACS water, or, To produce electricity.
To produce electricity: Current technology allows water to be heated with the radiation of the sun to produce steam that by electric turbines will generate electricity. Use in thermal plants.
To produce Hot water ACS: Current technology allows water to be heated with sun's radiation, and thus use it in the house in small domestic use facilities.
Solar Energy Advantages and Disadvantages
Hoy, In the renewable energy blog we want to continue talking about the importance of the advantages and disadvantages of renewable energy, what influence they exert in our life and how necessary they are for the normal and healthy functioning of the Earth. In this case we will talk about solar energy so that we focus on it, Its importance and all about solar energy advantages and disadvantages.
ADVANTAGES OF SOLAR ENERGY
When we think about solar energy, There are many advantages that come to our head, It seems that this type of energy is offered day after day with the sunrise and, Being Spain a place so favored by this star, becomes a type of energy that we could qualify as interesting.
ADVANTAGES OF SOLAR ENERGY:
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- positive
- It does not contaminate
- INJOGABLE SOURCE OF ENERGY
- Variety in the use of the solar source
- Ease of disassembly and reuse of photovoltaic panels
- Easy maintenance
- Can be installed on roofs and does not occupy space
- Reduces energy dependence against other countries, Spain is very energetically dependent.
- Promotes job creation, mounting, installation and manufacture of solar cells and panels
- It is a type of energy that is on the rise.
Disadvantages of solar energy:
- The installation cost
- Low performance compared to other systems
- Extended installation area if not for domestic use
- Inability of great accumulations
- High price of accumulators
TYPES OF SOLAR ENERGY
We show you a classification according to its technology and use.
Photovoltaic solar energy: To produce electricity through solar silicon panels
Solar thermal energy: For the production of low temperature ACS health water. Valid for sanitary use and heating.
Passive solar energy: Take advantage of the heat of the sun without the need for mechanisms or mechanical systems.
Thermoelectric solar energy: Produces electricity using lenses or mirrors and solar tracking devices that concentrate solar radiation on a reduced size surface normally to heat oil at high temperatures.
Hybrid solar energy: Combines solar energy with the energy obtained from a traditional thermal power plant, of biomass, Eolics or fossil fuel energy.
Solar energy how it works
Everything starts in the sun, Hydrogen atoms, They combine, To form helium atoms, In this process the light radiation is released.
This light radiation is very powerful, goes towards all directions. 1000W/m2 arrives at our planet this energy is sufficient to meet all our needs through photovoltaic penis, thermal panels and through other types of solar energy mentioned above.
Solar energy is the cleanest since being used does not produce any type of contamination or adverse effects to the environment.
Photovoltaic solar energy can be stored in batteries for later use during the night or on cloudy days. Or use it during the day without storing it by direct injection investors. Going to consume electricity directly from the solar panels and not the network as long as there is sun.
How solar energy is obtained
It is obtained from the radiation emitted by the sun. We can take advantage of it mainly 2 shapes:
- By high temperature thermal conversion (Phototémico system)
- By photovoltaic conversion (photovoltaic system).
Technology photovoltaic: Directly converts solar radiation into electricity. Use photovoltaic cells, which are sensitive semiconductors to sunlight, When we expose them to solar radiation, an electric power circulation between its two faces occurs in its cells.
Energy solar thermal: They work through a collector, A fluid circulates, water or oil that absorbs the radiated energy of the sun.
