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A simplified diagram of a coal-fired thermal power station. The superheater is the element 19. In many applications, a turbine will make more efficient use of steam energy than a reciprocating engine.
Superheater Provides additional heat – as much as 300 °F (167 °C) hotter – to steam that has been generated in the boiler by sending it back through superheat tubes located in the boiler tubes (28), thus increasing engine efficiency and power. [2] [8] [3]: 78 See also Superheater tubes (30). Smokestack (US+) Chimney, Funnel (UK+)
Schmidt superheater (Heat Engines, 1913).jpg: Source: Scan from Prof. William Ripper, Sheffield Univ. d.1937 (1913 edition of 1909 book. Originally published in 1889 as "Steam", but later expanded to cover internal combustion engines and so re-titled.) Heat Engines, London: Longmans : Author: Andy Dingley (scanner) Permission (Reusing this file)
HRSGs consist of four major components: the economizer, evaporator, superheater and water preheater [clarification needed]. The different components are put together to meet the operating requirements of the unit. See the attached illustration of a Modular HRSG General Arrangement.
Fossil fuel power stations often have a superheater section in the steam generating furnace. [citation needed] The steam passes through drying equipment inside the steam drum on to the superheater, a set of tubes in the furnace. Here the steam picks up more energy from hot flue gases outside the tubing, and its temperature is now superheated ...
The colours dark and light green represent wet and dry steam respectively. The colours orange and yellow represent hot and cooler exhaust gas respectively. In the diagram, three small-diameter orange/yellow empty firetubes are indicated to the bottom, with two larger diameter orange/yellow firetubes to the top that contain the superheater elements.
Superheated steam was widely used in main line steam locomotives. Saturated steam has three main disadvantages in a steam engine: it contains small droplets of water which have to be periodically drained from the cylinders; being precisely at the boiling point of water for the boiler pressure in use, it inevitably condenses to some extent in the steam pipes and cylinders outside the boiler ...
The flow of heat through the large superheater flue tubes was controlled by damper doors (marked "D" in the diagram), hinged or pivoted below the header in the smokebox. The damper doors were actuated by a small automatic steam cylinder and piston attached to the outer shell of the smokebox.