The development of solar energy is constantly evolving. This web also.
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In SolarEnergia we have decided to create a blog. Our intention is to publish articles related to the world of solar energy and energy in general. These are opinion pieces, studies or curiosities that are in some way related to the theme of our sections.
The publishers of SolarEnergía, sometimes we consider that it is good to add certain technical information related more to the world of physics and engineering. We understand that this notebook will help us improve related concepts such as thermodynamics and its laws or the units of the international measurement system, or how to express different types of energy.
Last review: January 24, 2020
Static electricity is a set of phenomena associated with the occurrence, conservation and relaxation of a free electric charge on the surface or in most of the dielectrics or in isolated conductors.
Friction dielectric electrification can occur when two different substances come into contact due to the difference in atomic and molecular forces (due to the difference in the work function of the materials' electron). In this case, the redistribution of electrons (in liquids and gases also ions) occurs with the formation on the contact surfaces of the electrical layers with equal signs of electrical charges. In fact, the atoms and molecules of a substance, which have a stronger attraction,…
Last review: January 23, 2020
An open system is a system that continuously interacts with its surroundings. The interaction can take the form of information, energy or material transformations at the border with the system. An open system opposes an isolated system that does not exchange energy, matter or information with the environment.
The concept of an open system allowed to interconnect the theory of organisms, thermodynamics and evolutionary theory. This concept was analyzed in detail with the advent of information theory and, subsequently, systems theory. Now the concept has applications in the natural and social sciences.
The entropy of an open system can be reduced at the expense…
Last review: January 16, 2020
Petroleum is a fossil fuel used in many applications due to its calorific value. As it is a limited resource, it is considered a non-renewable energy source.
Petroleum is a derivative of old fossilized organic materials, such as zooplankton and algae. Large quantities of these remains were deposited at the bottom of the sea or lake where they were covered with stagnant water (water without dissolved oxygen) or sediments such as mud and silt faster than they could decompose aerobically. Approximately 1 m below this sediment or the concentration of oxygen in the water was low, below 0.1 mg / l and there were anoxic conditions. The temperatures also remained constant.…
Last review: January 14, 2020
Thermodynamic solar energy is a combination of aerothermal and solar thermal energy.
Aerothermal energy uses a heat pump to lower the temperature of a coolant and circulate it in thermal contact with the outside. Because the difference in temperature with respect to the environment is very high, a heat transfer from the hot (ambient) to the cold (coolant) medium is achieved according to the laws of thermodynamics. A very important thermodynamic feature in this aspect is that the speed with which heat is transferred is greater the larger the temperature difference.
Solar thermal energy is based on heating the cooling fluid through solar radiation. This fluid is…
Last review: December 20, 2019
If you want to save with solar energy, we tell you the keys and advantages of energy self-consumption, which will help to save money and not depend on electricity trading companies. Contrast the new options of the energy companies
Currently, there are options for consumers who decide to invest in energy self-consumption, in addition to the conventional light rates that most of the light companies in the market work with , which do not necessarily coincide with the electricity distribution companies in Spain, since the energy sector was regularized in 2009.
In this way, we find services such as: ServiSolar de Naturgy, Smart Solar by Iberdrola, Repsol Energía…
Last review: December 9, 2019
Any implementation of a sustainable photovoltaic solar energy system implies the optimization of the resources to be used. This is the basis of the design and assembly of solar installations to optimize the obtaining of renewable energy.
To achieve an optimal optimization of solar radiation, that is, the use of the Sun, knowledge of the solar path, the profile of the needs and the conditions of the location of the solar panels is essential. All this entails determining the orientation and inclination of the solar panels in fixed installations to achieve the minimum cost of the kilowatt hour of this type of renewable energy.
For reasons of architectural adaptation,…
Last review: December 4, 2019
Thermodynamics is the branch of physics that studies the effects of changes in temperature, pressure and volume of a physical system (a material, a liquid, a set of bodies, etc.), at a macroscopic level. The root "thermo" means heat and dynamics refers to movement, so thermodynamics studies the movement of heat in a body. Matter is composed of different particles that move in a disorderly manner. Thermodynamics studies this messy movement.
The practical importance lies primarily in the diversity of physical phenomena it describes. Consequently, knowledge of this diversity has resulted in enormous technological productivity. Study of thermodynamics
Last review: November 27, 2019
Direct current is a very important type of electric current in solar energy where the direction of circulation of the flow of electric charges (electrons) does not vary. In many devices the symbol to indicate direct current is DC (direct current), or using the symbol of a continuous line (-) flanked on three shorter lines (---), for the alternating current that is used instead AC (alternating current) or the symbol (~).
The flow of charges occurs through a conductor, such as a metallic wire. The flow could also be established through a semiconductor, an insulator or even under vacuum as occurs in a cathode ray…
Last review: November 19, 2019
Charge controllers or regulators are equipment that controls the voltage and current of a solar panel or wind generator, delivered to the battery park. A charge regulator limits the speed at which electrical current is added or extracted from electric batteries. Avoid overload and can protect against overvoltage. Battery overload may reduce battery performance or life, and may pose a safety risk.
The charge controller can be supplied in the form of a separate device (for example, an electronic unit in a wind turbine or in a photovoltaic solar energy system) or in the form of a microcircuit for integration into a battery or charger. Independent charge regulators…
Last review: August 27, 2019
In climatology the term global warming indicates the change in the climate of the Earth developed in the twentieth century and still ongoing. This change is largely attributed to emissions into the Earth's atmosphere of increasing amounts of greenhouse gases, and other factors that the scientific community has been identified as attributable to human activity.
In the course of Earth's history, there have been several variations of climate that have led the planet to cross different eras of ice alternated with warmer periods called interglacial eras. These variations are mainly due to periodic changes in the orbital design of our planet, with disturbances due to the periodic…
Last review: July 5, 2019