Showcases
Watt's steam engine
<space=1em><b>Model redesign</b>
<space=1em>James Watt <nobr>(1737–1819) —</nobr> Scottish inventor of the double-acting steam engine. Member of the Royal Society of Edinburgh, the Royal Society of London, and the Paris Academy of Sciences.
<space=1em>In <nobr>1763</nobr> James Watt was commissioned to repair a working model of Newcomen's steam engine at the University of Glasgow. During the repair, he made changes to the design. In Watt's engine, the boiler is connected to the piston cylinder by a steam pipe, through which steam is periodically admitted into the upper cavity of the cylinder above the piston and into the lower cavity below it. These cavities are connected by a pipe to a condenser, where the exhaust steam is condensed with cold water and a vacuum is created.
<space=1em><b>Double action</b>
<space=1em>The machine was the first to use the principle of double action steam: fresh steam is admitted into the cylinder alternately into chambers on both sides of the piston. Watt's introduction of the principle of steam expansion consisted in the fact that fresh steam was admitted into the cylinder only for part of the piston stroke, then cut off, and further movement was carried out due to the expansion of steam and a drop in its pressure. Watt's machines operated on saturated low-pressure steam at a low number of revolutions per minute.
<space=1em><b>Revolution in technology</b>
<space=1em>James Watt registered a patent for his invention in <nobr>1769</nobr> However, the document stated that he had invented not a new steam engine, but an engine whose temperature was always equal to the temperature of the steam. In <nobr>1784</nobr> Watt received another patent for a steam engine with a rotating shaft and a condenser.
<space=1em>The efficiency of Watt's machine surpassed the successes of his contemporaries who built similar designs. Soon after the opening of the steam engine factory, these devices began to be used in a wide variety of industries. In <nobr>1820</nobr> in Great Britain, <nobr>320</nobr> Watt machines were in operation, and their number and power were constantly increasing.
ID экспоната:
266
Галерея изображений:
http://dpmzdr.infomedia.digital/files/0d/a2/s10da277c953dfb6caaa2bcb366e7ad88ecc81d95c.jpg / http://dpmzdr.infomedia.digital/files/e2/c1/s1e2c12573e8f92c40869dd72d6638291d397de175.jpg
Галерея изображений (оригинал):
http://dpmzdr.infomedia.digital/files/0d/a2/0da277c953dfb6caaa2bcb366e7ad88ecc81d95c.jpg / http://dpmzdr.infomedia.digital/files/e2/c1/e2c12573e8f92c40869dd72d6638291d397de175.jpg
Галерея изображений 2000:
http://dpmzdr.infomedia.digital/files/0d/a2/s20da277c953dfb6caaa2bcb366e7ad88ecc81d95c.jpg / http://dpmzdr.infomedia.digital/files/e2/c1/s2e2c12573e8f92c40869dd72d6638291d397de175.jpg
Блоки описания:
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Модель (деталка):
Watt's steam engine
Заголовок (деталка):
Steam engine
Mnemonic code:
266
Code in external DB source:
18494
Name:
Watt's steam engine