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Collects steam at the top of the boiler (well above the water level) so that it can be fed to the engine via the main steam pipe, or dry pipe, and the regulator/throttle valve. [2] [5] [6]: 211–212 [3]: 26 Air pump / Air compressor Westinghouse pump (US+) Powered by steam, it compresses air for operating the train air brake system.
According to his son Francis, Trevithick was the first to make high-pressure steam work in England in 1799, [11] although other sources say he had invented his first high-pressure engine by 1797. [12] [13] Not only would a high-pressure steam engine eliminate the condenser, but it would allow the use of a smaller cylinder, saving space and ...
Fire-tube boilers usually have a comparatively low rate of steam production, but high steam storage capacity. Fire-tube boilers mostly burn solid fuels, but are readily adaptable to those of the liquid or gas variety. Fire-tube boilers may also be referred to as "scotch-marine" or "marine" type boilers. [7] Diagram of a water-tube boiler.
The solution was the triple expansion engine, in which steam was successively expanded in a high pressure, intermediate pressure and a low pressure cylinder. [ 27 ] : 89 [ 28 ] : 106-111 The theory of this was established in the 1850s by John Elder , but it was clear that triple expansion engines needed steam at, by the standards of the day ...
The company introduced high-pressure steam engines to the riverboat trade in the Mississippi watershed. The first high-pressure steam engine was invented in 1800 by Richard Trevithick. [44] The importance of raising steam under pressure (from a thermodynamic standpoint) is that it attains a higher temperature. Thus, any engine using high ...
Early spark arrestors were simply iron wire screens installed within the stack. However, the screen reduced the rate at which smoke and steam could escape from the boiler. As well, embers caught by the screen further reduced available space for the passage of steam, and smoke and heat generated by the burning embers rapidly melted the wire screen.
The last time the Superdome hosted a Super Bowl, the lights went out in the middle of the third quarter, causing a 34-minute delay. This is the story of how it happened.
Cast-iron steam engine piston, with a metal piston ring spring-loaded against the cylinder wall. Steam engines are usually double-acting (i.e. steam pressure acts alternately on each side of the piston) and the admission and release of steam is controlled by slide valves, piston valves or poppet valves. Consequently, steam engine pistons are ...
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