Energy is the primary and most universal measure of all kinds of work by human beings and nature.
Energy is also defined as the ability or the capacity to do work. We use energy to do work and make all movements. When we eat, our body transforms the food into energy to do work. When we run or walk or do some work, we burn' energy in our bodies. Cars, planes, trolleys, boats, and machinery also transform energy into work. Work means moving or lifting something, warming or lighting something. There are many sources of energy that help to run the various machines invented by men.
So, we can say that as the population and requirement of any nation is increased the requirement of the energy (demand) will also increase for satisfying all types of the loads i.e. industrial, domestic etc. As the demand is going to increase the generations have to be increased. So as the time is going to pass the conventional energy sources are going to be decreased and it might happen that after some years these sources are going to be exhausted. The best alternative of conventional energy sources are the non-conventional energy sources, which are never going to become exhausted because they are the natural sources and they are permanently available for use.
Keywords: Non-Conventional Energy Sources, Present Scenario, Future Necessity
[...] In addition, biomass energy is gaining significance as a source of clean heat for domestic heating and community heating applications. In fact in countries like Finland, USA and Sweden the per capita biomass energy used is higher than it is in India, China or in Asia. Biomass fuels used in India account for about one third of the total fuel used in the country, being the most important fuel used in over 90% of the rural households and about 15% of the urban households. [...]
[...] The natural power potential of the thermal gradient energy is estimated to be as large as 10 W (10 TW). Obviously it is not technically feasible to extract all this energy. A fair estimation would be approximately 10 W as against the world installed electrical generation capacity of the order of 10 W. In India activities in this area are coordinated by the OTEC Cell at Indian Institute of Technology, Madras. A feasibility study of setting up a 5 to 8 MW pilot R & D OTEC plant off the main Anandman Islands is ready and a proposal for a feasibility study for installation of a 100 MW OTEC plant off Madras is under consideration. [...]
[...] With the passage of time the conventional energy sources are going to be decreased and it might happen that after some years these sources are exhausted. The one the best option of conventional energy sources are the nonconventional energy sources, which are never going to exhaust because they are the natural sources and they are going to be available forever. On the whole we can say that both the energy sources i.e. conventional and non-conventional have advantages and disadvantages with respect to each other. [...]
[...] Solar thermal energy is being used in India for heating water for both industrial and domestic purposes. A 140 MW Solar Energy Every thirty minutes, enough of the sun's energy reaches the earth's surface to meet global energy demand for an entire year. The sun is a fireball of free energy that can be harnessed for hot water and temperature control using solar collectors. In addition, solar energy can be used to provide electricity utilizing photovoltaic technology, which generates electricity from sunlight without producing green house gases (GHG's). [...]
[...] Wind energy is harnessed using wind turbines essentially giant fans that are rotated by the wind and use the kinetic energy from their rotation to charge an electric generator. Like solar panels, windmills can be adapted to small and large uses. Depending on their design, wind turbines can generate power as small as a few kilowatts or as large as several MW of electricity. Globally, the wind energy market grew a staggering in 2005. Also in Europe, wind installed capacity has already exceeded the European Commission's goals of 40 GW before the end of the decade. [...]
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