The Marine Steam Engine ...Longmans, 1898 - 519 páginas |
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Página 7
... shown in Fig . 4. Though the use of a large trunk of this description does not at first sight appear desirable , yet the engines of this type have generally worked in a satisfactory manner , and they were amongst the most smooth ...
... shown in Fig . 4. Though the use of a large trunk of this description does not at first sight appear desirable , yet the engines of this type have generally worked in a satisfactory manner , and they were amongst the most smooth ...
Página 28
... shown in column 6 of table . The table also gives approximately , in thermal units , the latent , sensible , and total heat of evaporation of one pound of steam up to a pressure of 350 lbs . per square inch above the atmosphere , which ...
... shown in column 6 of table . The table also gives approximately , in thermal units , the latent , sensible , and total heat of evaporation of one pound of steam up to a pressure of 350 lbs . per square inch above the atmosphere , which ...
Página 29
... shown in Stage 1 . From this point the temperature remains constant , and steam is given off at the constant pressure P pounds per square inch , which causes the piston to gradually rise , as shown in the two figures of Stage 2 , the ...
... shown in Stage 1 . From this point the temperature remains constant , and steam is given off at the constant pressure P pounds per square inch , which causes the piston to gradually rise , as shown in the two figures of Stage 2 , the ...
Página 30
... shown in Fig . 14. Suppose further that only the water occupies the space a C , so that there is no pressure therein . If heat be now applied to the water , instead of the formation of steam taking place only when a certain temperature ...
... shown in Fig . 14. Suppose further that only the water occupies the space a C , so that there is no pressure therein . If heat be now applied to the water , instead of the formation of steam taking place only when a certain temperature ...
Página 47
... shown in Figs . 77 and 78. The stokeholds are enclosed for the purpose of being placed under air pressure , by fitting vertical screen plates carried down between and at the ends of the boilers to meet the front boiler bearers . These ...
... shown in Figs . 77 and 78. The stokeholds are enclosed for the purpose of being placed under air pressure , by fitting vertical screen plates carried down between and at the ends of the boilers to meet the front boiler bearers . These ...
Términos y frases comunes
action air-pump amount angle arrangement auxiliary Belleville boiler bilge blades boilers bolts bottom cause cent centre coal cock combustion chamber compound engines compression condenser connected considerable crank crank-shaft Crown 8vo curve diameter draught eccentric efficiency evaporation exhaust expansion engines Fahr feed-water fire fitted friction funnel furnace gases gauge gear gunmetal heating surface high-pressure cylinder holes horizontal hydrometer Illustrations increased indicator diagram jacket length lever low-pressure cylinder main engines manganese bronze mean effective pressure motion necessary obtained ordinary orifice paddle-wheel piston plates ports position practice prevent propeller pump quantity rate of expansion reduced revolutions per minute riveted Royal Navy screw sea-water shaft ship shown in Fig side slide-valve space speed square inch steam pipes steam pressure steel stokehold stroke suction sufficient surface condensers temperature triple expansion engines tubes vertical vessels volume water-tube boilers weight zinc
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Página 144 - I call the steam vessel, must, during the whole time the engine is at work, be kept as hot as the steam that enters it ; first, by enclosing it in a case of wood, or any other materials that transmit heat slowly ; secondly, by surrounding it with steam, or other heated bodies ; and, thirdly, by suffering neither water, nor any other substance colder than the steam, to enter or touch it during that time...
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