Table of contentsMain and auxiliary equipmentCoal processing plant:Spray plant:Draft system:Boiler:Turbine:Ash treatment plant:Condenser:Cooling towers and basins:Heater feed water:Economizer:Air preheater:A Thermal A power plant converts thermal energy from coal into electrical energy. The coal is burned in a boiler which transforms the water into steam. The expansion of steam in the turbine produces mechanical power which drives the alternator (generator) coupled to the turbine. Say no to plagiarism. Get a tailor-made essay on “Why Violent Video Games Should Not Be Banned”? Get the original essay Thermal power plants contribute maximum to the generation of electricity for any country. Thermal power plants constitute 75.43% of the total installed captive and non-captive electricity generation. In thermal power plants, coal, oil, natural gas, etc. are used. are used as the main sources of energy. Main and auxiliary equipment Coal processing plant Spray plant Draft system Boiler Ash processing plant Turbine Alternator Condenser Cooling towers and basins Economizer Feed water heater Superheater and reheater Air preheater Coal processing plant: The Function of coal processing plant is automatic feeding of coal to boiler furnace. A thermal power station burns enormous quantities of coal. A 200 MW power plant may require around 2,000 tonnes of coal per day. Pulverization plant: In a modern thermal power plant, the coal is pulverized, i.e. reduced to dust, and transported to the furnace in a stream of hot water. air. Spraying is a way of exposing a large surface area to the action of oxygen and therefore promoting combustion. Draft system: Air circulation is caused by a pressure difference, known as draft. Draft is a differential pressure between the atmosphere and the interior of the boiler. It is necessary to cause the flow of gases via the boiler adjustment. This can be a natural draw OR a mechanical draw. Boiler: A boiler or steam generator is a closed container in which water, under pressure, is transformed into steam. It is one of the major elements of a thermal power plant. Always designed to absorb the maximum amount of heat released during the combustion process. Boilers are of two types. Fire tube boiler. Water tube boiler. The superheater is a component of a steam generation unit in which the steam, after leaving the boiler drum, is heated above its saturation temperature. The amount of superheat added to the steam is influenced by the location, arrangement, and amount of superheater surface area installed, as well as the boiler power rating. The superheater may consist of one or more stages of banks of tubes arranged to efficiently transfer heat from the combustion products. The heater is also a steam boiler component in which heat is added to this pressurized steam, which has given up some of its expanding energy. through the high pressure turbine. The steam after reheating is used to rotate the second steam turbine where the heat is converted into mechanical energy. This mechanical energy is used to operate the alternator, which is coupled to the turbine, generating electrical energy. Turbine: A steam turbine converts the thermal energy of steam into mechanical energy and drives the generator. He uses the