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Steam can be drawn off as required, either for driving a steam turbine or for process purposes (e.g. in chemical engineering), by opening a steam valve on top of the drum. . The pressure in the drum will fall but the reduced pressure causes more water to boil and the accumulator can go on supplying steam (while gradually reducing pressure and temperature) for some time before it has to be re-char
Spirax Group plc, formerly Spirax-Sarco Engineering plc, is a British manufacturer of steam management systems and peristaltic pumps and associated fluid path technologies. It is headquartered in Cheltenham, England. It is listed on the London Stock Exchange and is a constituent of the FTSE 100 Index.
The operation of a steam trap depends on the difference in properties between steam and condensate. Since liquid condensate has a much higher density than gaseous steam, it will tend to accumulate at the lowest possible point in the steam system. Steam properties such as density, latent heat, and saturation/boiling point are affected by pressure.
Thermodynamic data is usually presented as a table or chart of function values for one mole of a substance (or in the case of the steam tables, one kg). A thermodynamic datafile is a set of equation parameters from which the numerical data values can be calculated. Tables and datafiles are usually presented at a standard pressure of 1 bar or 1 ...
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 ...
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A means had to be provided, of course, to put the initial charge of water into the boiler (before steam power was available to operate the steam-powered feedwater pump). The pump was often a positive displacement pump that had steam valves and cylinders at one end and feedwater cylinders at the other end; no crankshaft was required.
Toggle the table of contents. Chromalox, Inc. ... boilers and steam generators, ... The company was acquired by Spirax-Sarco Engineering on May 26, 2017. References