Search results
Results from the WOW.Com Content Network
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 ...
A superheater is a device used to convert saturated steam or wet steam into superheated steam or dry steam. Superheated steam is used in steam turbines for electricity generation, in some steam engines, and in processes such as steam reforming. There are three types of superheaters: radiant, convection, and separately fired.
A fireless steam locomotive is similar to a conventional steam locomotive, but has a reservoir, known as a steam accumulator, instead of a boiler. This reservoir is charged with superheated water under pressure from a stationary boiler. The engine works like a conventional steam engine using the high pressure steam above the water in the ...
A high-pressure steam locomotive is a steam locomotive with a boiler that operates at pressures well above what would be considered normal for other locomotives. Most locomotives operate with a steam pressure of 200 to 300 psi (1.38 to 2.07 MPa). [1] In the later years of steam, boiler pressures were typically 200 to 250 psi (1.38 to 1.72 MPa).
It was then generally similar to the standard engines after they had been superheated, and it ran until 1947. [11] The last ten, Nos. 1452–61 built at Doncaster in 1910, had boilers producing superheated steam at 150 lbf/in 2 (1,000 kPa), and the cylinders were fed through piston valves. [12]
For further trials with superheated steam on the Ilsenburg – Wernigerode railway, there was a trials organisation near Wernigerode station. It was here that Schmidt founded the Schmidt Superheated Steam Company (Schmidtsche Heissdampfgesellschaft). By using superheated steam the thermal efficiency of a steam engine could be raised by as much ...
The torpedo's speed was determined by the level of pressure (three settings for 30/40/44 kn) from the low-pressure regulator feeding air to the bottom of the combustion chamber. The resulting superheated steam powered a four cylinder reciprocating engine, in turn powering a pair of contra-rotating propellers.
For the greatest efficiency, steam engines should be operated at the highest steam temperature possible (superheated steam), and release the waste heat at the lowest temperature possible. The efficiency of a Rankine cycle is usually limited by the working fluid.