Have you ever stopped to think about how electricity is generated? In case you don’t know, all sources of electrical energy are obtained through the conversion of other types of energy, such as mechanical, chemical, thermal energy and among other types of energy.
Knowing this, we will address the main forms of electricity generation, such as thermoelectric energy, hydroelectric energy, photovoltaic energy, nuclear energy and wind energy, in addition to mentioning what are the renewable and non-renewable energy sources, come on guys!
What is energy?
Energy is nothing more than the ability of something to do some kind of work, that is, it is the ability to generate strength in a given body, substance or physical system. According to the laws of physics, energy is associated with the ability of anybody to produce work, action or movement, so that energy cannot be created or lost, only transformed.
Renewable and non-renewable energy:
As we already know, energy sources or energy resources can be classified into two energy groups, which are renewable and non-renewable energies, which can be defined as follows:
Renewable energy sources are basically sources that regenerate naturally or through human intervention, that is, they are not depleted and are considered clean energies, because the residues left in nature are negligible. We can cite hydroelectric, solar, wind, biomass energy among others as an example of renewable energies.
Non-renewable energy sources are basically those that we find in nature in large quantities, but that are depleted and cannot be regenerated, either naturally or by human intervention.
Another factor that can be considered to determine non-renewable energy sources has to do with the time for their formation in nature, as it is extremely high time, in addition to being considered energy that pollutes, since the use of these energy sources causes several damages environmental issues. We can mention as the non-renewable energy source the nuclear energy, and thermoelectric, whose sources to generate heat are non-renewable, such as fossil fuels.
Type of energy: Thermoelectric.
We can convert thermal energy into electrical energy through thermoelectric plants , which is an energy resulting from the combustion of combustible products, such as bagasse, wood, fuel oil, diesel oil, natural gas, natural coal, among others, that is, it can be obtained by burning some kind of renewable or non-renewable fuel. In addition to thermal energy being used to generate electrical energy it is also used to generate mechanical energy, used for other purposes.
Type of energy: Hydroelectric.
Hydroelectric energy is obtained through the force exerted by water, that is, in a simple way, a large amount of water that passes through the turbines, which causes the potential energy to be transformed into mechanical energy and immediately afterwards the mechanical energy is transformed in electrical energy by the generator. It is important to highlight that most of the electricity generated in Brazil is obtained from hydroelectric plants.
Power type: Photovoltaic
The solar energy comes from sunlight and can be obtained through solar panels, which have the function to capture light energy and convert it into heat energy or electricity. In addition, the great advantage of energy from the sun is that it is clean energy, that is, it does not cause pollution and is completely renewable.
Power type: Nuclear
Nuclear energy is obtained through a reaction called fission. This reaction is nothing more than the division of a heavy atom nucleus into two or several fragments, which is determined by a bombardment of neutrons, and which is capable of releasing an enormous amount of energy.
Nuclear plants, despite being one more option to generate electricity due to some advantages, such as small size. Nuclear plants can cause very serious accidents in the entire ecosystem around them, it is not a source of renewable or clean energy, because in the extraction of the nucleus of atoms occurs the release of radioactive waste, which are extremely harmful to the health of the environment and must take special care.
Type of energy: Wind
The wind power is generated by the force of the winds, which should be able to move huge wind turbines, which are connected to turbines, which have the ability to generate electricity. Wind energy is also clean and renewable, being a differential in relation to certain forms of energy generation, such as nuclear energy, thermoelectric and other non-renewable and renewable. It is important to highlight that for the generation of wind energy it is not enough to be installed in places with strong winds, but also that it has a minimum volume of winds and with regularity, that is, winds with a minimum and constant speed.
The video below is from the World of Electricity and shows how it works and talks about some curiosities about the Itaipu hydroelectric plant, an excellent opportunity for those who want to learn more about electricity generation.
We finished another article and hope to have helped clarify doubts related to the main types of energy. If you have any questions or curiosity about the subject, leave it in the comments and we will answer it!