Solar Energy Systems

Let’s talk first about heating systems. The heat gathered in the collector can be used to meet many needs. For example, you can get hot water for domestic or industrial use, or to heat your home, hotels, schools, factories, etc.. We can even acclimatize swimming pools and allow bathing for most of the year.

Also, although it may seem odd, one of the most promising applications of solar heat is cooling during warm seasons; just when there is more sun. In order to get cold you need to have a “hot source” which may well have its origin in a solar collector installed on the roof. In Arab countries air conditioners already operate that use solar energy effectively.

Applications

Agricultural applications are vast. Solar greenhouses are available with greater and earlier harvests, agricultural dryers consume a lot less energy when combined with a solar system and, to cite another example, can operate desalination plants or water purification without consuming any fuel.

The “solar cells”, arranged in solar panels produced electricity early in space satellites. Now emerging as the ultimate solution to the problem of rural electrification, with clear advantage over other alternatives because, having no moving parts the panels, they are totally unchanged over time, do not pollute or produce no noise at all, do not consume fuel and do not require maintenance. Furthermore, although with less efficiency, also work on cloudy days, since they capture the light that filters through the clouds.
The electricity thus obtained can be used directly (e.g. to draw water from a well to water or by an electric motor) or be stored in batteries for use in the night. It is even possible to inject the surplus electricity to the general network, obtaining a significant benefit.

If consensus is that the price of solar cells continues to decline, starting production on a large scale, it is very likely that, for first century, much of the electricity consumed in the sun-rich countries has its origin in the photovoltaic conversion.

Solar energy can be perfectly complemented

with other conventional energies to avoid the need for large and costly systems of accumulation. Thus, a well-insulated house can have solar hot water and heating, with the support of a conventional gas or electrical work only during periods without sun. The cost of the “electricity bill” would be only a fraction of that achieved without the existence of the solar system.

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