The Marine Steam Engine ...Longmans, 1898 - 519 páginas |
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Página 120
... cut at the top , which allow the steam to enter the pipe and pass through the stop - valve to the engines . The object of this fitting is to prevent ... SHUT - OFF VALVE FORWARD ENGINE ROOM BULKHEAD ATHWARTSHIP 120 THE MARINE STEAM - ENGINE.
... cut at the top , which allow the steam to enter the pipe and pass through the stop - valve to the engines . The object of this fitting is to prevent ... SHUT - OFF VALVE FORWARD ENGINE ROOM BULKHEAD ATHWARTSHIP 120 THE MARINE STEAM - ENGINE.
Página 124
... out . A hand - blow - off cock is fitted also the stop - cock , A , to enable the automatic apparatus to be shut off when required . As considerable quantities of hot water may be rapidly blown out , the discharge is generally led to the ...
... out . A hand - blow - off cock is fitted also the stop - cock , A , to enable the automatic apparatus to be shut off when required . As considerable quantities of hot water may be rapidly blown out , the discharge is generally led to the ...
Página 135
... of expansion is the ratio between the final volume of the expanding steam , and its volume at the instant of cut - off . In our ОР example is the ratio of expansion . ON The laws according to which the pressure of steam diminishes ...
... of expansion is the ratio between the final volume of the expanding steam , and its volume at the instant of cut - off . In our ОР example is the ratio of expansion . ON The laws according to which the pressure of steam diminishes ...
Página 137
... of 18 to 19 lbs . per square inch ; whereas with the condenser , the pressure resisting the forward motion would be only 3 to 4 lbs . absolute . It is clear that , in a non - condensing engine , the cut - off should never be early ...
... of 18 to 19 lbs . per square inch ; whereas with the condenser , the pressure resisting the forward motion would be only 3 to 4 lbs . absolute . It is clear that , in a non - condensing engine , the cut - off should never be early ...
Página 139
... of AB , and second , the diminishing pres- sure during the expansion of the steam when its flow into the cylinder has been cut off , this diminishing pressure being represented by the expansion curve BC . It A is clear therefore that ...
... of AB , and second , the diminishing pres- sure during the expansion of the steam when its flow into the cylinder has been cut off , this diminishing pressure being represented by the expansion curve BC . It A is clear therefore that ...
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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