The Marine Steam Engine: A Treatise for the Use of Engineering Students and Officers of the Royal Navy |
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Page 9
... ship during a voyage , as the coal and stores were consumed . For fighting ships paddle - wheels were particularly unsuit- able . The wheels themselves were exposed to danger from shot and shell , and the paddle - boxes interfered ...
... ship during a voyage , as the coal and stores were consumed . For fighting ships paddle - wheels were particularly unsuit- able . The wheels themselves were exposed to danger from shot and shell , and the paddle - boxes interfered ...
Page 10
... ship ' Rattler ' and the paddle - wheel vessel'Alecto , ' and , in 1849 , with the screw ship Niger ' and paddle - wheel vessel Basilisk . ' The results in each case were in favour of the screw propeller , and many valuable conclusions ...
... ship ' Rattler ' and the paddle - wheel vessel'Alecto , ' and , in 1849 , with the screw ship Niger ' and paddle - wheel vessel Basilisk . ' The results in each case were in favour of the screw propeller , and many valuable conclusions ...
Page 11
... ship the screw propeller had to be driven at a much greater speed than the paddle - wheel , and as it was not possible in the then condition of mechanical engineering to drive the pistons at a sufficiently high speed to enable the ...
... ship the screw propeller had to be driven at a much greater speed than the paddle - wheel , and as it was not possible in the then condition of mechanical engineering to drive the pistons at a sufficiently high speed to enable the ...
Page 14
... ship . Fig . 6 shows a modified arrangement of return connect- ing - rod , which has been fitted in some recent ships . This plan has the advantage of a single piston - rod and stuff- ing - box for each cylinder , and the design of the ...
... ship . Fig . 6 shows a modified arrangement of return connect- ing - rod , which has been fitted in some recent ships . This plan has the advantage of a single piston - rod and stuff- ing - box for each cylinder , and the design of the ...
Page 19
... ships of this great reduction of coal expenditure has been twofold : a . The increased distance ships have been able to ... ship of great power , would be of moderate dimensions , and although the whole of the machinery might not in all ...
... ships of this great reduction of coal expenditure has been twofold : a . The increased distance ships have been able to ... ship of great power , would be of moderate dimensions , and although the whole of the machinery might not in all ...
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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.