ACTIVE SOLAR ENERGY
In a booming world of technological development and activism for the protection of the environment, it is logical to combine these two for the use of energy.
ACTIVE SOLAR ENERGY
The active solar, refers to technology (equipment) used to convert solar energy into mechanical work or usable heat. We call this event ” active energy “. The systems that benefit from solar energy without using these equipments are called ” passive solar technology “.
That is why it is increasingly common to see sustainable architecture, thanks to the use of renewable resources. Of which, ironically, the most prominent manages to be one that is 149,600,000 km away from the earth: the sun.
What is Active Solar Energy?
The active solar energy is that which converts solar energy into “useful” work ie heat for example, the movement of the engines of washing machines and heating resistors in electric heating systems. This energy is measured in KWh.
When talking about the distribution of this energy, it is a bit complicated, since it develops the losses in the electrical networks . Due to this reason, surcharges were created for the excess consumption for this type of energy.
Active solar energy also generates a drop in power in your installation, which leads to a greater contracted power.
The solar active is capturing the sun’s energy and transforming it into electrical or mechanical energy.
The basis of active solar energy is the use of technologies to transform energy. For the use of this type of energy requires an economic investment to acquire solar equipment that best suits personal needs.
The active solar energy is divided into:
• Thermal energy.- transforms solar energy into heat, it is used as a hot water supply for domestic use.
A typical solar thermal system consists of collectors facing south, these collectors are black to absorb most of the sun’s heat. This type of energy is also used for heating and swimming pools.
• Photovoltaic Systems.- Solar panels convert sunlight into electrical energy, they can be mounted on the ground, but generally seeking higher productivity are located on the roofs of houses.
The use of active solar energy helps save on the costs of services such as electricity or gas payments. The equipment for the use of solar energy is very resistant and is designed to require the least
possible maintenance .
Active solar energy classifies the technologies related to the use of solar energy using mechanical or electrical equipment to improve the performance or to process the energy obtained either by converting it into electrical or mechanical energy . These equipments can be fans, water pumps, etc.
On the contrary, solar systems that do not use these devices are classified as passive solar energy systems .
Types of active solar energy
The applications of active solar energy can be classified into two types:
- Thermal solar energy
- Photovoltaic Solar Energy
Thermal solar energy
The Solar thermal exploits the properties of thermodynamics to Increase the temperature of a fluid to Increase ITS energy heat ífica and, THEREFORE, ITS Entropy . In this form of utilization of solar energy, no electricity is generated .
Systems of hot water that are not based on the thermosyphon system use water pumps and fans to circulate the water within their circuits. For this reason, these systems would be classified as active solar energy.
In contrast, solar water systems that use thermosyphon , the circulation of water is made by the difference of densities between hot water and cold water do not need external mechanisms and, therefore, are classified as passive solar energy systems .
Most solar collectors are placed on fixed supports with a calculated orientation so that they can capture the greatest amount of solar radiation during the day and during the year. But these collectors would be more efficient if they could modify their orientation with respect to the Sun depending on the day of the year and the time of day.
There are systems to modify the orientation of solar collectors . In case these systems are mechanical it would be active solar energy systems.
Photovoltaic Solar Energy
The photovoltaic solar energy is clearly an active solar energy system. Thanks to the photovoltaic effect of the photovoltaic panels can generate electricity later pass through transformers and other external elements.
As in solar thermal energy , solar panels can be oriented by a small electric motor to orient them more towards the Sun. This engine would be another external element.
Where do we get active solar technology?
Obtaining energy from this natural element through technology, is divided into two categories that depend on the capture, conversion and distribution of it. But the one that stands out for taking advantage of the benefits of the sun is active solar technology.
This term refers to mechanisms that are used to capture the sun’s radiation and with this it produces electrical or mechanical energy . The result of the use of these technologies can be from refrigeration, ventilation or just storage for use in some future.
The equipment that is managed to have these results is by heliostats mirrors, cylinders or parabolic discs, or also by tower power plants. To achieve high temperatures (2000 ° C), they are obtained from the sun’s rays hitting the mirrors and are directed to a reflector that takes them to a precise point.
At the same time, active solar energy is divided based on its capacity for energy transformation, resulting in two types: thermal and photovoltaic energy.
Thermal energy.- It simply produces hot water, or in other terms, at no time electricity. This system is of domestic use, in heating, up to swimming pools. The system consists of cylindrical solar collectors painted black and insulated by a glass.
Photovoltaic Systems.- This system generates electricity. Through solar panels that when exposed to the sun, silicon cells or other semiconductors generate an electric current. Usually it is located in the upper part of some installation to have a better use of solar rays, but sometimes they can be located in the ground.
Due to this the photovoltaic system is presented as the most advantageous and favorite in its class. The null maintenance, its ease of installation and its cost are some of the reasons why it manages to be a good alternative energy source, from these new technologies.
Operation of active solar energy
Active solar energy refers to those systems that are used to transform solar energy into usable heat, to generate air currents for ventilation or cooling or to accumulate heat for future use, all this process is done by mechanical or electrical equipment such like pumps or fans.
The systems that are responsible for the capture, use solar energy without using these devices, they are classified within the passive solar technology .
Benefits of active solar energy
Active solar energy, from the technical and energy saving point has the following benefits:
- Contributes to the reduction or elimination of surcharges for the consumption of reactive energy
- It favors energy and economic savings, which is very important
- A reduction in voltage drops is generated, since at lower circulating intensity, lower consumption
- A possible reduction of wiring sections is generated
Currently, we are experiencing a boom in technological development and activism against the protection of the environment, so that active solar energy is a sustainable architecture, because it uses renewable resources and benefits from the resource that it is 149,600,000 km away from the earth: the sun.