The Marine Steam Engine ...Longmans, 1899 - 519 páginas |
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Página 131
... Port- 1 ZINC SLAB FIG . 117 . land cement , which is a substance impervious to moisture . Corrosion is sometimes produced by using certain shore waters . All shore waters contain air and other gases dissolved in them , and these being ...
... Port- 1 ZINC SLAB FIG . 117 . land cement , which is a substance impervious to moisture . Corrosion is sometimes produced by using certain shore waters . All shore waters contain air and other gases dissolved in them , and these being ...
Página 135
... ports , passages , & c . In ordinary cases of marine engines working at full power the reduction of pressure due to this cause may be taken to be about one - tenth of the absolute pressure of the steam in the boilers , but under certain ...
... ports , passages , & c . In ordinary cases of marine engines working at full power the reduction of pressure due to this cause may be taken to be about one - tenth of the absolute pressure of the steam in the boilers , but under certain ...
Página 136
... , due to the gradual opening and closing of the ports by the slide valve , instead of the sudden opening and closing assumed in theoretical diagrams In the non - condensing engine the back pressure line 136 THE MARINE STEAM - ENGINE.
... , due to the gradual opening and closing of the ports by the slide valve , instead of the sudden opening and closing assumed in theoretical diagrams In the non - condensing engine the back pressure line 136 THE MARINE STEAM - ENGINE.
Página 167
... ports are open , the steam passes into the slide - valve casing underneath . When the valve is in its middle position all the ports are wide open . A great number of ports are desirable , so that the amount of opening may be ...
... ports are open , the steam passes into the slide - valve casing underneath . When the valve is in its middle position all the ports are wide open . A great number of ports are desirable , so that the amount of opening may be ...
Página 168
... ports wide open , or the motion reduced to such an extent that it has no appreciable effect on the passage of the steam , so that the handling of the engines , going astern , & c . , is not affected . By altering the position of the ...
... ports wide open , or the motion reduced to such an extent that it has no appreciable effect on the passage of the steam , so that the handling of the engines , going astern , & c . , is not affected . By altering the position of the ...
Otras ediciones - Ver todas
The Marine Steam Engine: A Treatise for Engineering Students, Young ... Richard Sennett Sin vista previa disponible - 2018 |
The Marine Steam Engine: A Treatise for Engineering Students, Young ... Richard Sennett Sin vista previa disponible - 2016 |
Términos y frases comunes
action air-pump amount angle arrangement auxiliary Belleville boiler bilge blades boilers bottom cause cent centre coal cock combustion chamber compound engines compression condenser connected considerable crank crank-shaft Crown 8vo curve diameter drain 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 Illustrations increased indicator diagram initial pressure jacket lever low-pressure cylinder manganese bronze marine engines mean effective pressure motion necessary obtained orifice paddle-wheel piston plates ports position practice prevent propeller pump quantity rate of expansion reduced revolutions per minute riveted Royal Navy safety valves screw sea-water shaft ship shown in Fig side slide-valve space speed square inch steam pipes steam pressure steel stokehold stroke suction surface condensers temperature triple expansion engines tubes vertical vessels volume water-tube boilers weight
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Página 142 - 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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Página 142 - I intend, in many cases, to employ the expansive force of steam to press on the pistons, or whatever may be used instead of them, in the same manner as the pressure of the atmosphere is now employed in common...