In a conventional thermal power plant, the heat used for steam generation may be obtained by burning a fossil fuel, or, in the case of a heat-recovery steam generator (HRSG), may be derived from the exhaust of a gas turbine. In a nuclear plant, the heat may be derived from the radioactive decay of a nuclear fuel. In this chapter we shall be examining the water and steam circuits of boilers and HRSGs, as well as the steam turbines and the plant that returns the condensed steam to the boiler.

Chapter Contents:

• 2.1 Steam generation and use
• 2.2 Drum boilers and HRSGs
• 2.3 Once-through boilers and OTSGs
• 2.4 The steam turbine
• 2.5 The condensate and feedwater system
• 2.5.1 The deaerator
• 2.5.1.1 Chemical dosing
• 2.6 The feed pumps and valves
• 2.7 The water and steam circuits of HRSG plant
• 2.8 Summary

Inspec keywords: heat recovery; steam turbines; steam power stations; boilers

Other keywords: thermal power plant; boilers; nuclear plant; fossil fuel; nuclear fuel; gas turbine; steam generation; radioactive decay; heat-recovery steam generator; water circuits; HRSG; condensed steam

Subjects: Steam power stations and plants