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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)
A convection superheater is located in the convective zone of the furnace, in the path of the hot flue gases, usually ahead of an economizer. A convection superheater is also called a primary superheater. A separately fired superheater is a superheater that is placed outside the main boiler and has its own separate combustion system.
Superheater tubes Pass steam back through the boiler to dry and superheat it for greater efficiency. [2] See Superheater (32). Throttle valve (US+) Regulator valve (UK+) Controlled by the Throttle Lever / Regulator (8), regulates the amount of steam delivered to the cylinders, which is one of two ways to vary power of the engine (throttle ...
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.
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.
The superheater was placed in the gap formed between these, with both ends of its tubes connected to a single superheater header drum, and an internal baffle to separate wet and dry steam. [10] A secondary effect of the superheater was to increase the temperature differential between inner and outer tubes of the bank, thus encouraging circulation.
A leaking smokebox door is often revealed by a patch of red hot metal when the engine is working or blistered paint and rusted metal when cold. Some smokebox doors have a single handle in the form of a wheel ; many British-built locomotives, notably GWR and BR Standard types, have a pair of smokebox door handles resembling the hands of a clock ...
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 ...