Author : P. Subha Hency Jose 1
Date of Publication :13th March 2019
Abstract: Electricity is the prime indicator of the economic growth and standard of living of the people in a nation. Generation of power is mainly dependent on coal fired power plants throughout the world. Coal is known to be one of the most important natural resources in the world. The surplus availability, extensive distribution and versatility of coal makes it a significant source of electrical energy for all times. The major proportion of electric power is generated using coal rather than any other source of fuel. It is cheaper than other fossil fuels but it is hard to be burnt. For power units operating on fossil fuel, the sole, prime, operating cost is fuel. The fuel expenses account for about 50 - 60% of the cost of generating electricity. Hence, procuring fuel of lower price is often a major challenge. Despite this and other environmental concerns, coal is still found to hold a major share of the electrical energy consumption in future. Over 48% of the world’s electric power supply is obtained from thermal power plants. A thermal power plant produces electrical power from fossil fuel, namely coal through several energy conversion processes, using water as a working fluid. It comprises a boiler, turbine, electric generator and other auxiliary equipments each of which serve a definite purpose. This paper deals with the mathematical model and the design aspects of the boiler and the system response when it is subjected to many inputs.
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