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July 2, 2009

How Does Solar Energy Work: Find It Out

Definition of solar energy and the process of its generation

Solar energy can be defined as the process of transforming naturally received sunlight into machine power, chemical power and electric currents. In other words, the process of storing and using the radiant energy of the sun is termed solar energy. Different technologies and devices related to solar energy are used to convert sunlight into mechanical and chemical power, and electricity. Chief among these devices are water pumps, solar chimneys, photovoltaic cells and solar thermal equipments. In case you are thinking how exactly solar energy works, we would be addressing precisely that issue in this article.

Solar energy working mechanism ” the method and its immense power

For learning how solar energy works, the steps of regenerating and applying solar power has to be understood in minute detail. Solar energy also needs to be one of the best sources of abundant and renewable energy. The upper layers of the earths atmosphere are hit by the electromagnetic waves of sunlight. About seventy percent of these waves are reflected back into space. Clouds, landmasses and water bodies on the earths surface help in the absorption of the remaining thirty percent. Radiant heat can be obtained from these radiations of the sun. This radiant energy can be effectively stored and converted to electricity, chemical power and mechanical power, via different machines. In fact, about 99% of the total amount of renewable energy reserves on earth, that can be put to use, is accounted for by solar power. Individual power requirements determine the efficiency with which solar energy is used by the different techniques. This in turn, decides how the solar power would be made to work. Indeed, solar energy finds usage in a wide range of common applications, including architecture, cooking and planning of urban areas. Solar power may be used to drive vehicles as well.

The exact manner of using solar power, as well as the necessary accessories is determined by the final use to which solar energy would be put. Solar energy usage methods can, however, be categorized into two types: Active and passive solar energy techniques. This classification is based on the way in which solar units function. Solar devices (like, pumps) are able to directly take in solar radiations and convert them to mechanical power. Conversion of solar energy to heat is done using photovoltaic cells, while electricity (from the same source) can be obtained by using fans. On the other hand, passive solar techniques try to do away with additional buildings to tap sunlight. Here, the focus is on getting the maximum radiations from the sun, and using sunlight directly. Urban planning and designing, at spaces adequately illuminated by sunlight is done via this technique. Thus, the passive solar techniques try to establish solar power as the only usable source of energy. This is unlike active solar techniques, which try to maximize the availability of solar energy. Thus, in face of the numerous advantages, tapping and using solar energy is indeed necessary. Solar power is regularly applied for a wide range of activities as well. Either active or passive technologies of solar energy are used for manifold purposes, including urban planning, architecture, agriculture, cooking, disinfection, electricity generation, lighting purposes, as well as a host of other needs. However, usage of solar energy does have a few flipsides as well. These disadvantages need to be studied carefully as well.

How much do we gain by using solar energy?

The pros and cons of using solar power have to be properly listed, in order to form an idea of the methodology of its working. Solar energy is abundant, free and a renewable source of power. As such, it scores over most other competing sources of energy. Usage of solar energy also does not release in any pollution affecting earths atmosphere. The same cannot be said of the conventional fossil fuel energy sources, which released green house gases in the air, greatly polluting the latter, and also resulting in aiding the global warming process. Solar energy can also generate enough power to run cars and even satellites. However, there are certain limiting features to the usage of solar energy as a source of power. Solar energy plants can perform well only in areas that have continuous and strong sun rays all round the year. Hence, these plants have remained limited to only the sun-bathed parts of the world. A solar power system, set up at a place that receives irregular sunlight would fail to produce the desired output. Considering the rather high costs of installing a solar energy plant, a system at such a place cannot be economically sustained either. Researchers are, however, trying to work around these problems. The general view is that most houses would have converters that run on solar power, in the foreseeable future. The cleanliness of the earths atmosphere would also get a much needed boost.

Instead of wondering about the working mechanism of solar energy, you should consult a reference manual on the subject. Such a manual would describe how a solar power plant should be set up, at which place would such plants yield the best results and how to get hold of free batteries and other required components at a reasonable price. All the necessary safety measures as well as the details of wiring are also provided in the manual. A prior study of this manual will surely make you ready to install the solar power plant.

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