Solar radiation.

SOLAR RADIATION

It is the set of electromagnetic radiation emitted by the sun, the product of nuclear fusion reaction inside the sun, which causes a mass loss, is transformed to energy. This energy released from the sun is transmitted to the outside by solar radiation.

Solar radiation is distributed from the infrared to the ultraviolet. Not all radiation reaches the Earth's surface because the ozone layer acts as a filter of harmful radiation, high frequency waves, it allows to pass other waves as ultraviolet long wave. This ultraviolet radiation allows life on the planet due to the photosynthesis.

Solar radiation or solar energy is a renewable energy that is an inexhaustible source of energy. We should note that even renewable forms of energy such as hydropower and also wind power, and the energy of the waves of the sea are byproducts of discharge solar energy on the earth's surface.

Currently the use of solar radiation technology is classified as passive or active, depending on how capture, convert and distribute the solar energy. Active technologies include the use of photovoltaic panels and thermal collectors to collecting the solar energy. Among the passive techniques, different techniques framed bioclimatic architecture are: the orientation of buildings to the Sun, selecting materials with favorable thermal mass or having properties for light scattering, and the design of spaces through natural ventilation.

In the case of converting solar energy into electricity, there is an element called photoelectric cell. These cells type that are marketed hover at an efficiency of no more than 20% on average, besides the fact that only works on the light side.

The infrared radiation, which we perceive as heat, cannot be used by the photovoltaic panels yet, but by other devices that harvest this heat into the water.

Large projects of solar power generation on a commercial scale can require large amounts of land. However, a system for a residential house does not have this problem.

The initial costs of installing a solar power system can be high compared to other alternatives but there are no further costs or maintenance costs very cheap.

In some places the sunlight does not have the intensity or is not constant enough to provide permanent energy flow.

CONCLUSIONS

Solar energy is transmitted by waves from the infrared to the ultraviolet.

In a nutshell the solar energy makes possible life on Earth

There are different techniques to take advantage of solar radiation as thermal collectors and photoelectric panels.

SUGGESTIONS

Increasing resources for renewable energy research.

Making a gradual shift from non-renewable to renewable energy.

We must maintain the interest and encourage to use of solar technology.

Radiación solar

Es el conjunto de radiaciones electromagnéticas emitidas por el Sol, producto de la reacción de fusión nuclear en el interior del sol que ocasiona una pérdida de masa la cual se transforma en energía, esta energía liberada del Sol se transmite al exterior mediante la radiación solar.

La radiación solar se distribuye desde el infrarrojo hasta el ultravioleta. No toda la radiación alcanza la superficie de la Tierra debido a que la capa de ozono actúa como filtro de radiaciones nocivas, ondas de alta frecuencia, que llegan a la Tierra permitiendo que pasen otras como la ultravioleta de onda larga, que de esta forma llega a la superficie. Esta radiación ultravioleta es la que permite la vida en el planeta, ya que es la que permite que se realice la fotosíntesis del reino vegetal.

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