The Marine Steam Engine: A Treatise for the Use of Engineering Students and Officers of the Royal Navy |
From inside the book
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Page 26
... acts in producing or resist- ing motion in a body ; and may be represented by a pres- sure , or a pull , and expressed generally as being equivalent to so many pounds weight . - Work . A force is said to perform work when by its action ...
... acts in producing or resist- ing motion in a body ; and may be represented by a pres- sure , or a pull , and expressed generally as being equivalent to so many pounds weight . - Work . A force is said to perform work when by its action ...
Page 28
... acts , and the work thus performed is wasted ; the only useful work being that employed in overcoming the resistance of the ship and driving her ahead . The ratio of this useful work to the total energy expended by the propeller is ...
... acts , and the work thus performed is wasted ; the only useful work being that employed in overcoming the resistance of the ship and driving her ahead . The ratio of this useful work to the total energy expended by the propeller is ...
Page 70
... acts as a non - conductor . It is evident that the steam could not escape at all from the bottom face . By slightly inclining the box , the elevated side gave off steam much more freely , so that its rate of evaporation was increased ...
... acts as a non - conductor . It is evident that the steam could not escape at all from the bottom face . By slightly inclining the box , the elevated side gave off steam much more freely , so that its rate of evaporation was increased ...
Page 71
... act in a similar manner . In all probability , owing to the great velocity of the gases through the tubes , a large proportion of the hot gases in the centre and lower parts of the tubes never reach the surface at all , so that their ...
... act in a similar manner . In all probability , owing to the great velocity of the gases through the tubes , a large proportion of the hot gases in the centre and lower parts of the tubes never reach the surface at all , so that their ...
Page 105
... act as the upcast shaft , and the hot air from the fronts and tops of the boilers passes up this shaft and escapes through a casing round the funnel on the upper deck , its place being taken by a portion of the fresh air that enters the ...
... act as the upcast shaft , and the hot air from the fronts and tops of the boilers passes up this shaft and escapes through a casing round the funnel on the upper deck , its place being taken by a portion of the fresh air that enters the ...
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Common terms and phrases
absolute pressure action air-pump angle arrangement atmosphere back pressure bilge blades brass cause centre coal cocks combustion compound engine connected crank crank-shaft curve diameter draught eccentric efficiency evaporation exhaust expansion valve Fahr feed feed-water feet fitted friction funnel furnaces gases gear gun-metal heating surface high-pressure cylinder hot-well hydrometer increased indicated horse-power indicator diagrams iron jacket Kingston valves latent heat length low-pressure cylinders machinery marine boilers marine engines metal motion necessary ordinary orifice paddle-wheel pass pipes piston plates port pounds per square pressure of steam prevent propeller pumps quantity rates of expansion reduced revolutions per minute Royal Navy safety-valves screw screw-propeller sea-water sensible heat shaft ship shown in Fig side slide slide-valve speed square inch steam pressure steam-pipes steel stokeholds stroke suction suitable superheated superheater surface condensers temperature thermal units total heat triple expansion engines tubes vertical weight
Popular passages
Page 32 - ... the quantity of heat necessary to raise the temperature of one pound of water at its maximum density, one degree Fahr., can be made to perform work equal to the raising of 772 Ibs.