Thermal power plant

The shaft then rotates the generator which converts this kinetic energy into electrical energy. The saturated steam is introduced into superheat pendant tubes that hang in the hottest part of the combustion gases as they exit the furnace.

thermal power plant diagram

Thus leaks of non-condensible air into the closed loop must be prevented. Because the metallic materials it contacts are subject to corrosion at high temperatures and pressures, the makeup water is highly purified before use.

components of thermal power plant

Also Read: Combination Boilers The boiler tubes which are in contact with low temperature acts as downcomers to circulate the water while the tubes which are in contact with high temperature acts as risers to carry steam. Generally, flue gases from the boiler exhaust are at high temperature and if this heat is not utilized will lead to a large number of losses resulting in reduced boiler efficiencies.

Forced draft fan For units over about MW capacity, redundancy of key components is provided by installing duplicates of the forced and induced draft fans, air preheaters, and fly ash collectors. The pulverizers may be ball millsrotating drum grindersor other types of grinders.

Air-cooled condensers typically operate at a higher temperature than water-cooled versions. The thermal power plant consists of five MW generating units.

Thermal power plant in india

Normally, the crushed coal is compacted by bulldozers, as compacting of highly volatile coal avoids spontaneous ignition. On heating feed water in a deaerator tank decreases the solubility of air in water, thereby removing the dissolved air from the water. The piping and valves are generally of stainless steel. The steam generating boiler has to produce steam at the high purity, pressure and temperature required for the steam turbine that drives the electrical generator. Once the unit is "tripped" i. Seal oil is used to prevent the hydrogen gas leakage to atmosphere. After gravity separation, water softening is done by ion exchange process. Circulating water system[ edit ] See also: Circulating water plant To dissipate the thermal load of main turbine exhaust steam, condensate from gland steam condenser, and condensate from Low Pressure Heater by providing a continuous supply of cooling water to the main condenser thereby leading to condensation. The hydrogen must be sealed against outward leakage where the shaft emerges from the casing.

The first unit of the power plant was commissioned in Augustwhile the last unit commenced operations in October

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Thermal power station