Renewable energies are one of the main current issues of scientific societies, mainly to reduce the environmental impact caused by the burning of fossil fuel that constantly deteriorates the atmosphere, which is why renewable energies emerge in charge of mitigating climate change with much more clean for the environment, in the following article we will learn about how solar panels work, being a type of technology based on solar rays, let's learn a little about it below:
Solar Energy
Man has always been characterized by the continuous search for energy, through which the evolution of humanity and the development of society have been carried out, but over time it has influenced the deterioration of the environment and pollution. of all the planet's ecosystems, therefore renewable energies have emerged, they are known as a clean and inexhaustible source of energy, focused on obtaining energy from all renewable resources.
Renewable energies emerged with the intention of combating climate change and reducing the emission of greenhouse gases, therefore, there are some inexhaustible resources such as wind, water, sunlight, among others. There is a type of engineering focused on obtaining the greatest benefit from them and thus generating clean energy suitable for all people. Some of them have evolved over time and have supported the entire society such as solar energy.
Solar energy is that which comes directly from the solar star, where an internal nuclear reaction occurs in the sun, the composition of the sun is hydrogen and when subjected to high temperatures it melts to produce helium. This type of process releases large amounts of energy that travel long distances through space over billions of years. The earth is one of the closest celestial bodies to the sun, allowing an adequate temperature that collaborates with the development of life on the planet.
This energy can be expressed in many ways, being interpreted in variable wavelengths to obtain visible and infrared light, they are considered as the portion of invisible light that cannot be perceived by the human eye but is present; There are also interpretations referring to the portion of light that is obtained in the visible spectrum and is perceived by the human senses, normally known as light and heat.
Man has sought a way to obtain the benefit of the solar radiation that reaches the planet, being a type of inexhaustible resource. Developing technologies based on using means that collect the electromagnetic radiation that comes from the sun, carrying out a thermal conversion until it is transformed into thermal energy. This type of energy is used by human beings, to be used as electricity, hot water, among others. This whole process begins with the interaction of the solar panels with the rays coming from the sun.
How do solar panels work?
Solar panels correspond to a device used that is responsible for capturing solar radiation to be converted into electrical energy, they are considered as a type of solar collectors responsible for producing hot water through thermal solar energy and photovoltaic panels are responsible for to generate electricity by means of solar radiation.
Renewable energies are responsible for converting natural energies into energies suitable for human consumption with the least possible environmental impact, solar energy being the most used by society. The transformation of solar radiation is carried out by photoelectric cells, it corresponds to an electrical device that converts light energy into electrical energy. This type of process is known as the photoelectric effect.
The photoelectric effect consists of allowing the formation of light through photons, where they arrive impacting a surface made of silicon, they end up emitting a beam of electrons that are captured by the same surface and produce an electric current. The relevant factor in this process are the surfaces Composed of semiconductor materials, they are responsible for converting the solar radiation that falls on them into electricity.
The light containers are responsible for transmitting their energy from the electrons found in the semiconductor materials that make up their surface, focusing on the moment that the electrical potential barrier between the electrons is broken, thus leaving the semiconductor material towards an external circuit. . Voltaic cells are used in conjunction with other means responsible for forming the voltage with the desired potential, in this way it is possible to get solar energy to become the energy that can be consumed. Currently, double-sided photovoltaic cells are used, supported by reflective surfaces, through this system the efficiency can be doubled and the exposure of sunlight increased.
This type of cells are known as photovoltaic solar panels, considered as a type of advanced and complex technology, it is applied by several companies and companies to guarantee this type of resource on their property. Among the countries that stand out for implementing this type of technology are Germany, Italy, Japan and the United States.
Applications of Energy Generated by Solar Panels
Solar panels are a type of technology that is accessible to many people, it consists of a device that is responsible for transforming the energy that comes from the sun into electrical energy, the larger the panel installed, the greater the reception of solar radiation. and the greater the generation of electrical energy. They are considered a type of renewable and clean energy, reducing the impact on the environment and favoring energy savings. Let's learn about the main applications of the energy generated by solar panels:
Autonomous Applications
They are known as photovoltaic installations that are isolated from the electrical network, that is, they are not connected to any type of network, supplying the entire place with the energy that is generated by the solar panels and also being consumed directly. They are considered as an option for those cases where it is not profitable and maintenance can become complicated, therefore the connection is direct, some of the places that present this type of installation are mountain refuges.
There are different types of autonomous photovoltaic installations, classified into two main groups; the first corresponds to space, it is the one that is produced by satellites and also by those space stations and the second type is from homes in rural areas, where it is used for telecommunications, public lighting, water pumping, signaling, lighting appliances, agricultural lighting, among others.
These types of installations are applied directly to those places with difficult access to the electrical network, so it is more feasible to install solar panels that represent a source of self-consumption and greater comfort. Having as main disadvantage the variation of the solar radiation, depending on the solar schedule, the inclinations of the sun, the climatological changes and the seasons of the year; being recommendable to generate an accumulation of necessary energy for those hours that the electrical network will not be able to supply.
In this case, the autonomous photovoltaic installations are in charge of offering renewable energy to all local systems, mainly those more rural regions such as mountains or plains; coming to transform sunlight into electricity through photovoltaic panels, highlighting in this case a set of elements to be able to have an adequate operation, highlighted below:
Accumulators of electrical energy
They are in charge of storing all the electrical energy generated by the solar panels, allowing the accumulation of necessary energy that allows the correct functioning of the devices that are installed. They are a group of batteries installed near the equipment, having a function very similar to a battery. Its main function is to be an essential element for those moments when electrical energy cannot be generated directly from the plates, such as feeding energy to a car engine, such as on nights when there is no solar radiation, winter time when solar rays are scarce, among others.
charge regulators
Charge regulators carry out control of the accumulator charging process, it is a type of battery installed separately from the device or also as an integrated microcircuit. They are in charge of controlling the voltage of the current that circulates through your system to be received by the batteries that are in your installation. One of its main functions is to avoid overloads and overvoltage in all its circuits, in this way it is possible to avoid diminishing the performance or the useful life of the battery and avoid putting the entire installation at risk, this is because solar energy generate high voltages during its loading process, therefore it is considered an essential factor in the entire system.
Charge Inverters
Responsible for converting the solar energy obtained in the form of direct current until transforming it into alternating current, the latter being the one implemented for electrical appliances. The main function is to be a rectifier - inverter used to vary the voltage and frequency of alternating current based on the current obtained by solar energy. Its applications are essential in autonomous photovoltaic systems because they are responsible for powering all electrical devices found in isolated areas such as mountain shelters, boats, mobile homes, among others, in addition to being responsible for carrying out the control of the rate of energy circulating in your system for aOptimum lighting condition.
Network Applications
The network applications of solar panels are related to the energy produced that cannot be consumed autonomously, in this case it pours all the energy generated directly to be consumed, this is due to the fact that it does not have any type of storage, where the The voltaic module is responsible for receiving solar radiation, until it is converted into continuous electrical energy, the people in charge take this current and transform it into an alternating current, to finally be transported for their respective distribution.
This type of application is directly linked to the solar panels that are responsible for generating electricity from solar farms, photovoltaic plants, photovoltaic buildings, among others. They are those places that have a continuous supply of energy to guarantee effective operation, therefore, solar panels are an optimal type of technology for this type of activity.
Advantages and Disadvantages of Solar Panels
Humanity has stood out for obtaining the greatest benefit from the resources that are present in the environment, currently developing a large number of technologies focused on reducing the negative impact on planet earth, emerging solar panels, focused on having the greater benefit from the sun's rays, therefore we will know the main advantages and disadvantages of this type of renewable energy.
Advantages of Solar Panels
Solar energy is focused on obtaining benefits from the sun's rays to be transformed into consumable energy by all people, being a renewable energy focused on generating a self-sufficient resource and the least environmental impact, below we will know its main advantages:
Inexhaustible
The most obvious advantage of solar panels is their main source of energy, which is the sun's rays, being an inexhaustible element where you only want to have the greatest benefit from the sun's exposure to planet earth. Emphasizing that the sun's energy is not likely to disappear, so it guarantees to be a safe source of life for millions of years.
Clean energy
One of the main concerns of humanity is the high environmental impact of burning fossil fuel, which is why the need arises to obtain energy by other renewable and clean means for the environment, in this case, solar panels offer a type of totally clean energy, which do not need a chemical treatment, nor a drastic process such as combustion, therefore, they do not generate an emission of polluting substances that deteriorate the atmosphere and collaborate with climate change.
Less Waste
Oil represents one of the main sources of energy in the world but it is also the cause of a large amount of waste from its derivatives or secondary processes, generating a large amount of waste that is stored, takes years to disappear and generates a great impact. environmental. Solar panels guarantee not to generate any type of residue or secondary waste that harms nature.
Natural Disaster Reduction
Oil spills caused on platforms and refineries are well known, generating pollution and loss of a great variety of species; Another of the means of seeking energy is nuclear, which has generated a large number of consequences and natural disasters such as those known in the Chernobyl or Fukushima plants. Solar panels are a totally harmless kind of technology, so the natural disaster factor would be reduced.
Own Consumption
Solar panels represent a direct means of accessing electricity without the need for a company or industry in charge of its distribution, being an important factor for those less favored rural areas, where they do not have easy access to electrical networks, guaranteeing a self-sufficiency for those seasons with difficulties to this resource.
PRODUCTION
An important factor of solar panels is that they can be installed on large scales, mainly in those places that need a continuous power supply, such as fields and orchards; Similarly, they are acquired for small home installations, representing a type of support energy, in addition to collaborating with the reduction of public lighting expenses.
Simple Installation and Minimal Maintenance
Solar panels represent a type of simple and easy-to-install technology, they do not require laborious maintenance, so they can guarantee a minimum of 20 years of useful life.
Job opportunities
Renewable energies have been supported by a large number of companies and campaigns that have favored environmental conservation, generating new employment opportunities that support the cause. Solar panels are built by companies with ecological purposes offering hiring opportunities and job opportunities, it also guarantees to have the greatest employment opportunities for society in the long term.
Disadvantages of Solar Panels
Solar energy represents the main renewable energy used by humanity and developed by several countries, being considered one of the main sources of clean energy for the future of humanity, however there are some disadvantages that need to be highlighted:
Little implanted energy
Solar energy is one of the most studied and advanced among the renewable energies used today, but it is very little implemented in the nations, in addition to not being supported by large companies, which is why its expansion has been limited to developed countries such as Japan, the United States and Germany.
High Economic Investment
The main source used for this type of energy is sunlight, considered a renewable resource and easily accessible to all, but the installation of solar panels is usually very expensive, requiring a high initial investment of approximately 7000 euros depending on the size. and the shape of the device, while those for domestic use must be paid in installments between approximately 7 to 10 years. Therefore, this type of technology is mainly acquired by companies and some industries with some ecological purpose.
Detailed Location
Solar panels cannot be located in any area, they must have an appropriate space and location for their proper functioning, always taking into account the greatest contact with the sun's rays, therefore, it is a factor that must be considered when carrying out the installation. because not all places will be suitable for this type of technology.
Visual impact
There are various forms of pollution, one of them is visual pollution, it represents everything that breaks the aesthetics of the environment, the continuous rural and urban constructions have deteriorated the landscape of nature and solar panels represent a factor that can generate a great impact. visual for all its engineering, therefore, they are normally located in remote and desert areas. Solar panels are installed in buildings or in country houses, diminishing the aesthetics of the place, but they should always be found in the points that have the greatest contact with the sun's rays. Due to this, it is considered as a not very clean energy, since it collaborates with the contamination of the environment.
They are not that efficient
Solar panels depend directly on the sun, so they are influenced by those seasons of the year with large solar exposures such as summer and spring, but their function decreases in those rainy and winter seasons. Therefore, it is an unpredictable method of obtaining energy, depending on the weather and the geographical conditions that favor its exposure to the sun.
Solar Powered Trains
The means of transport have been characterized as one of the greatest advances in society, allowing human beings to move from one sector to another in the shortest possible time, being a common factor in the daily life of man, some of The most used means of transport are private cars, taxis, buses, motorcycles, planes and trains. Having in common the large number of emissions of pollutants into the atmosphere that grows daily.
One of the main topics of study by environmentalists is the impact of the carbon footprint left by man every time he uses a means of transport, highlighting in this case when he uses the train or makes a plane trip; Due to this, some environmental movements have been born, for example in 2018 a large number of employees of Swedish airlines resigned their positions, with the intention of reducing the emission of carbon dioxide into the atmosphere and raising awareness among the population for the carbon footprint observed with each flight.
While in 2019 in Australia they began to use trains with two cars that only work with solar energy, being considered a great technological advance that collaborates with the reduction of gaseous emissions and the use of cleaner energies for the environment. In India there are 250 trains that are kept moving by means of solar energy, currently the United Kingdom is carrying out research for the application of the technology in its trains and to implement renewable energies in its country.
Taxes for payment for Solar Panels
There are many countries that have focused on the application of this technology, mainly those favored by their geographical and climatic characteristics; highlighting Spain, which represents one of the nations with the greatest sunlight in the world, which is why it represents a favored geographical point for the application of this technology, due to which many citizens have requested to be able to enjoy this service. Therefore, so-called sun taxes have been applied, which must be paid before accessing the service.
Highlighting the fact that the majority of citizens choose to invest in solar panels, considered a very expensive technology but it represents a means of saving electricity bills and that in the long term they guarantee self-sufficiency; It is considered a very practical measure for the entire nation, but before using the technology, a tax must be paid to the government, generating great confusion and nonconformity on the part of the citizens.
In the middle of 2018, the Government of Spain decided to eliminate the sun tax, all this in order to protect consumers and also to promote their self-consumption. Currently, the new regulations allow shared self-consumption between the communities, allowing installations outside the buildings, being an option that only the residents of the town can request and reach an agreement.
In addition, solar panel installations must request permission from the different electricity companies to be able to carry out the connection, while the domestic installation will not need to carry out this type of procedure. In addition, together with the equipment, the special electric voltage meter will be granted to control self-consumption.
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