Chapter 2

Steam Generators

A steam generator or a boiler is that part of a steam power plant in which steam is generated to produce electrical power and/or to get used in an industrial process. A steam generator comprises two important parts, i.e., a furnace, where a fuel is burnt to generate heat, and a proper boiler, where this generated heat is used to convert water into steam. Heat energy contained in flue gas is exchanged in a superheater, reheater, economizer, air heater, etc. After passing though the economizer the feedwater enters either the boiler drum for circulation in a sub-critical boiler or a steam separator in a supercritical boiler. Steam coming out of the drum/separator is further passed through the superheater and reheater ...

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