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How Does Solar Energy Work: Get the Answer

By Jim Martin
Jul 4, 2009
Defining solar energy and tracing its generating process

When the radiations from sunlight are tapped and utilized, the process is called harnessing solar energy. In more specific terms, the generation of mechanical power, chemical power and electricity from the sunlight is defined as solar energy. Different alternative techniques of solar energy are used for this conversion purpose. These technologies include solar chimneys, solar thermal tools, water pumps and photovoltaic cells. In this article, we would look at the rather interesting topic of the mechanism of working of solar energy " a topic that has already drawn widespread attention.

Solar energy working mechanism " the method and its immense power

In order to get a proper feel of how solar energy works, the regeneration, way of application and final usage have to be considered in detail. Solar power is widely recognized as the best renewable source of energy. When the electromagnetic waves of the sunlight strike the upper echelons of the earths atmosphere, reflection results in almost seventy per cent of these waves sent back into space. The remaining thirty per cent radiation can be effectively absorbed by the clouds as well as the landmass and water bodies on the earths surface. This solar radiation, received direct from the sun forms radiant heat, which, in turn, is tapped and converted to mechanical power, chemical power and electricity. Indeed, almost the entire amount of renewable energy source on the earths surface is comprised of solar energy. The specific individual needs, as well as the efficiency with which solar energy sources are used decide upon the way in which solar energy would work. Applications of solar power can be found in varied fields, from urban planning to architecture, and from cooking at home to powering motor vehicles.

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.

Advantages and disadvantages of 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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