So that to use the solar energy?

The solar use of energy in the houses supposes profits of great importance. In the first place, it implies the saving of fossil, polluting and exhaustible energies and coming from foreign countries of which power we are made employees speaking. Finally, it involves to the population in the management of the energy, and offers possibilities to tend towards a power autonomy.

Most important applications of solar energy?

The main strategies that can be adopted to use the solar energy in the similar houses or buildings would be the following ones:

     Solar energy heat water (ACS) and heating:

She is one of the more extended applications. It is used for it capturing thermal lots constituted by three basic elements: glass, absorverter and heat insulation. Thanks to the effect conservatory generated by the glass, the solar radiation is catched inside the absorverter receiver and in heat form by “black” the metallic surface of the absorvedor.

      Solar electricity (photovoltaic):

The photovoltaic technology is based on the property that has the photovoltaic cells (composed of Silicon) to generate current electrical. The essential component of these cells, the silicon, is the second more abundant Earth element after Oxygen. For a same amount of initial raw material, the electricity obtained from exposed crystalline silicon to the sun is of the order of 20 times superior to the one of Uranium used in the nuclear power stations, 530 times superior to the one of petroleum and 820 times superior to the one of the coal.

There are two ways to confront the application of the photovoltaic solar energy. Connected to grid for his sale to the correpondiente electrical company and the other way it would be for self consume by means of a system of batteries connected to the photovoltaic field.

Nowadays the great majority of the photovoltaic facilities is the connected ones to grid due to their enormous advantages in form of premium for the proprietor of the installation. For the calculation of the premium, it is necessary to be sent to the new RD, RD 436/2004 establishes that a connected photovoltaic installation to grid of less than 100 KW of power in the investor, received a percentage of an electrical tariff average or of reference, defined in the articulate 2 of RD 1432/2002. For the year the 2006 value of this tariff of reference is 7.65 c€/KWh. Thus in the articulate 33,1 of RD 436/2004, settles down that the premium to receive by an installation FV of less than 100 KW is of:

 575%, during the first 25 years --> 0.4404 €/KWh.

 460% as of the 25 years --> 0.3523 €/KWh.

Frequent questions:

With a connected photovoltaic installation on Grid , could avoid cuts of electrical provision.

Answer: No. These systems do not have battery then all their production is injected in the mains and, so we cannot accumulate electricity for the case of an interruption of the electrical provision of the grid.

Would have I more benefit if consumption directly the energy that generates the photovoltaic modules and sell the exceeds?.

Answer: No. The energy that produces the photovoltaic panels sells to a price higher than we paid to the electrical Company, so it is more advantageous to sell it everything to that price and to buy to the electrical Company all the electricity that we consumed.

Could work a thermal solar collector in the Moon, where does not exist atmosphere?

Answer: If so that the effect conservatory takes place within the collector, collector will receive more radiation because not having atmosphere.

If a thermal solar collector had only to be used in December, would be better to arrange it horizontally or vertically?.

Answer: Vertically. In this way the sun rays would affect with a degree of the possible perpendicular inclination to the collector.