The Marine Steam Engine: A Treatise for the Use of Engineering Students and Officers of the Royal Navy |
From inside the book
Results 1-5 of 71
Page 71
... diameter , and consequently the useful com- bustion of the gases cannot extend much beyond the combustion - chamber . The flame is extinguished within a few inches from the entrances of the tubes , and the gases pass through unconsumed ...
... diameter , and consequently the useful com- bustion of the gases cannot extend much beyond the combustion - chamber . The flame is extinguished within a few inches from the entrances of the tubes , and the gases pass through unconsumed ...
Page 74
... diameter , so as to increase the surface and facilitate the action of the hot gases on it . As a general rule the ratio of length to diameter of tube in marine boilers rarely exceeds 30 to 1 , and the area through the tubes should be ...
... diameter , so as to increase the surface and facilitate the action of the hot gases on it . As a general rule the ratio of length to diameter of tube in marine boilers rarely exceeds 30 to 1 , and the area through the tubes should be ...
Page 87
... diameter , and the greater the length of the furnaces , the greater will be their inefficiency . The length of the cylindrical furnace is rarely allowed to exceed seven feet , and the diameter is usually made as large as possible , to ...
... diameter , and the greater the length of the furnaces , the greater will be their inefficiency . The length of the cylindrical furnace is rarely allowed to exceed seven feet , and the diameter is usually made as large as possible , to ...
Page 90
... diameter of the boiler . In measuring the steam room the water level should be taken at about nine inches above the highest part of the heating surface . The steam dome is an undesirable fitting in high- pressure boilers , and it is ...
... diameter of the boiler . In measuring the steam room the water level should be taken at about nine inches above the highest part of the heating surface . The steam dome is an undesirable fitting in high- pressure boilers , and it is ...
Page 99
... diameter . The steam- collecting tube at the top of the boiler is of 4 inches internal , and 5 inches external diameter . The horizontal tubes are welded up at each end 4 - inch thick , and con- nected by small vertical tubes of 7 ...
... diameter . The steam- collecting tube at the top of the boiler is of 4 inches internal , and 5 inches external diameter . The horizontal tubes are welded up at each end 4 - inch thick , and con- nected by small vertical tubes of 7 ...
Other editions - View all
Common terms and phrases
action air-pump angle arrangement atmosphere auxiliary back pressure bilge blades brass cause centre coal cock combustion compound engine connected crank crank-shaft curve diameter draught eccentric efficiency equal evaporation exhaust expansion engines Fahr feed feed-water feet fitted floats friction funnel furnaces gases gear gun-metal heating surface high-pressure cylinder hot-well hydrometer increased indicated horse-power indicator diagrams iron jacket Kingston valve latent heat length low-pressure cylinders marine boilers marine engines mean effective pressure metal motion necessary ordinary paddle-wheel pass pipes piston pitch plates port position pounds per square prevent propeller pump quantity rates of expansion reduced represent resistance revolutions per minute Royal Navy safety-valves screw screw-propeller sensible heat shaft ship shown in Fig side slide-valve speed square inch steam pressure steam-pipes steel stokeholds stroke suitable superheated superheater surface condensers temperature thermal units total heat triple expansion engines tubes vertical weight wheel
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.