The Marine Steam Engine: A Treatise for the Use of Engineering Students and Officers of the Royal Navy |
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Page 23
... taken out . Very little further was done in this direction , until , in 1881 , Mr. Kirk fitted a set of triple expansion engines on board the SS . Aberdeen , ' built for Messrs . George Thompson and Sons , of Aberdeen , for their trade ...
... taken out . Very little further was done in this direction , until , in 1881 , Mr. Kirk fitted a set of triple expansion engines on board the SS . Aberdeen , ' built for Messrs . George Thompson and Sons , of Aberdeen , for their trade ...
Page 39
... taken to mean the boiling point under the atmospheric pressure . Total heat of evaporation . - The total heat of evapora- tion is the sum of the latent and sensible heat of evapora- tion . We will use the term total heat of evaporation ...
... taken to mean the boiling point under the atmospheric pressure . Total heat of evaporation . - The total heat of evapora- tion is the sum of the latent and sensible heat of evapora- tion . We will use the term total heat of evaporation ...
Page 61
... taken to be from 10 to 15 per cent . The steam blast is especially wasteful and injurious in the case of surface condensation , as the whole of the steam used for the blast is necessarily lost and cannot be returned to the boiler in the ...
... taken to be from 10 to 15 per cent . The steam blast is especially wasteful and injurious in the case of surface condensation , as the whole of the steam used for the blast is necessarily lost and cannot be returned to the boiler in the ...
Page 69
... taken as synonymous , for the efficiency of the boiler depends on the completeness of the combustion as well as on the efficiency with which the heat is transmitted . The two efficiencies may be defined as follows : - 1. Efficiency of ...
... taken as synonymous , for the efficiency of the boiler depends on the completeness of the combustion as well as on the efficiency with which the heat is transmitted . The two efficiencies may be defined as follows : - 1. Efficiency of ...
Page 81
... taken at about 26 lbs . per indicated horse - power . Therefore the quantity of water evaporated per pound of coal is equal to 10 × 26 30 = 8.7 lbs . Taking the theoretical evaporative power of the coal as 14.5 lbs . from 100 ° Fahr ...
... taken at about 26 lbs . per indicated horse - power . Therefore the quantity of water evaporated per pound of coal is equal to 10 × 26 30 = 8.7 lbs . Taking the theoretical evaporative power of the coal as 14.5 lbs . from 100 ° Fahr ...
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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.