Solar energy is a very important and great source of renewable energy on the earth. The amount of solar energy that reaches on the earth’s surface is reduced in intensity due to several atmospheric phenomena such as reflection, scattering, absorption of radiation etc. There are several factors on which the amount of reduction depends. These are generally the wavelengths of the radiation and the path through which the solar radiation passes. The factors affecting the intensity of the direct sunlight coming from the sun are the changing weather conditions, clouds and atmospheric pollutants.
The total amount of solar radiation that reaches the earth surface involves two types of the radiations i.e. direct radiation and diffused radiation .Diffused radiation is also called as indirect radiation and ii is caused due to scattering of light. It is estimated that about 52% of the solar energy is absorbed by the earth .This absorbed energy can be used in several fields. Here, the main use of this stored heat is for cooling and heating of the buildings. This geothermal heat is environment friendly renewable and beneficial form of energy.
As we move downwards in the interior of the earth’s surface, there exists a geothermal gradient i.e. increase in the temperature with respect to the increase in the depth. In various parts of
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The first benefit is that it is the energy form which does not produce harmful emissions although it is used for the production of electricity and for heating homes. It is inexpensive. Some other benefits include that the cost of GPP installation is less as compared to other plants, no fuel is used for the power generation , so, the running cost of GPP’s are also very less. On the other hand, limitations include the emission of hazardous gases or minerals from the earth’s crust as a result of improper drilling. Sometimes, pollutants can also be produced because of incorrect method of harnessing