Panels photovoltaic solar energy

Installation of thermal solar energy

Solar power plant
Thermoelectric

Heating

Low temperature thermal solar energy

Low temperature thermal solar energy

Low thermal solar installations are considered those installations that provide useful heat at temperatures below 65ºC through solar energy.

A low-temperature solar thermal installation consists of solar collectors, two water circuits (primary and secondary), heat exchanger, accumulator, expansion vessel and pipes.

Circulation of the water inside the circuits can be obtained by thermosiphon, taking advantage of the density difference of the water at different temperatures or by means of a circulation pump, although in this case an external contribution of electrical energy…

Geothermal heat pump

Geothermal heat pump

The geothermal heat pump is an air conditioning system for buildings that exploits the heat exchange with the superficial subsoil, by means of a heat pump. Since the heat in the subsoil comes largely from the interior of the Earth, geothermal energy of low enthalpy is classified as a source of renewable energy, although the heat pump itself consumes electricity, generally produced from other sources of energy (for example, fossil fuels).

The heat pump allows the exchange of heat between a "source" at a lower temperature than the "well", or the point where the heat is introduced. In a…

Geothermal energy

Geothermal energy

Geothermal energy is a type of renewable energy on a human scale that is obtained from the heat of the interior of the Earth. Equestrian thermal energy can be obtained without the combustion of any material, it is therefore a form of clean energy without carbon dioxide emissions.

The temperature in the inner layers of the Earth remains constant during the different seasons of the year. Generally the inner layers are hotter than the surface in winter and cooler in summer. This is because the surface layers are heated and cooled more easily according to the laws of thermodynamics.

Flat solar collector

Flat solar collector

The flat plate thermal solar collector has a good cost / effectiveness ratio in moderate climates and adapts correctly to a large number of applications (hot water heating, pool heating, heating support, preheating industrial fluids, etc.).

We can distinguish two basic types of flat plate collectors, depending on the configuration of the absorber: the "grid type" parallel, in the vertical and horizontal versions and the "serpentine type" series. Basically, the difference between the two is:

  • The parallel configuration favors that the temperature of the collector can be stratified…

Domestic hot water (DHW)

Domestic hot water (DHW)

One of the applications of solar thermal energy is the obtaining of sanitary hot water (ACS). Solar collectors capture the energy of solar radiation to increase the temperature of a fluid.

Domestic hot water (DHW) is water intended for human consumption (potable) that has been heated. It is used for sanitary uses (bathrooms, showers, etc.) and for other cleaning uses (washing dishes, washing machine, dishwasher, floor scrubbing). In terms of energy, the ACS is an important component to take into account, since it represents between 25 and 40% of the energy consumption of homes.

As…

Solar thermal energy

Solar thermal energy

The solar thermal energy consists of the use of energy from the Sun to transfer it to a medium that carries heat, usually water or air.

Among the different applications of solar thermal energy there is the possibility of generating electric power. The current technology allows to heat water with solar radiation to produce steam and subsequently obtain electrical energy.

Although the principle of operation is very similar there are two main applications of solar thermal energy:

  • Thermal single energy for use in homes and small installations
  • Large thermal solar…

Adiabatic process

Adiabatic process

An adiabatic process is a thermodynamic process in which the system does not exchange heat with its surroundings. An adiabatic process may also be isentropic, which means that the process may be reversible.

The adiabatic process provides a rigorous conceptual basis for the theory used to expose the first law of thermodynamics and, as such, is a key concept in thermodynamics.

The term adiabatic refers to elements that impede the transfer of heat with the environment. An isolated wall is quite close to an adiabatic limit. Hence the adiabatic wall term appears.

A process that…

Solar panel. What is it?

Solar panel. What is it?

A solar panel is a device to take advantage of solar energy. It can also be called a solar module.

Photovoltaic solar panels contain a set of solar cells that convert light into electricity. It is called solar because the sun is one of the strongest energy sources for this type of use. Solar cells are sometimes called photovoltaic cells, and photovoltaics literally means "light-electricity". Solar cells have the photovoltaic effect to absorb the sun's energy and cause electrical current to flow between two charged layers in the opposite direction.

The denomination of solar panel…

Solar heating systems with forced circulation

In many cases it is not viable to install solar power equipment for the production of hot water thermosyphon, since often the location of the solar collectors is above the tank (for example, sensors on the roof and inside the accumulator & rsquo; housing, golf sensors, etc.)

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In this type of installation, the water flowing between the collector and the accumulator can not do it by natural convection since warmer water (sensors) and is at its highest point and there is no natural force that makes displace the cold water that is already at the lowest point and is the heaviest.

Advantages and disadvantages of solar energy

Advantages and disadvantages of solar energy

In general, both photovoltaic solar energy and, above all, solar thermal energy has a very good acceptance in society. However, it is convenient to know the advantages and disadvantages of solar energy to reinforce or contrast our opinion.

When we talk about energy sources, most people are positioned in favor or against a certain type (solar energy, nuclear energy, wind power, etc.). The arguments for positioning are varied: energy efficiency, pollution, safety, cost ... Therefore, we will try to analyze the advantages and disadvantages of solar energy in the most objective way possible.

Renewable energy

Renewable energy

Renewable energy is that energy that comes from practically inexhaustible natural sources. They are considered inexhaustible either because of the large amount of energy they contain or because they can be regenerated naturally.

Among the main advantages of renewable energies we highlight the following:

Renewable energies are respectful with the environment and do not pollute.In this sense, they are safer and pose fewer health risks than other sources of non-renewable energy.

In most cases they are simple to dismantle and it is not necessary to guard their waste, as it…

Passive solar energy

Passive solar energy

In the design of passive solar buildings, windows, walls and floors are made to collect, store and distribute solar energy in the form of heat in the winter and reject solar heat in the summer. This is called passive solar design because it does not involve the use of mechanical and electrical devices.

The key to designing a passive solar building is to make the most of the local climate by performing a precise site analysis. The elements to be considered include the placement and size of the window, and the type of glazing, thermal insulation, thermal mass and shading. Passive solar…