The Marine Steam Engine: A Treatise for the Use of Engineering Students and Officers of the Royal Navy |
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Page 15
... less space , than the paddle - wheel engines that preceded them . FIG . 6 . The speed of piston in this type of engine was generally about 400 ft . per minute , and the weight of machinery about 3 cwts . per I.H.P. Direct - acting ...
... less space , than the paddle - wheel engines that preceded them . FIG . 6 . The speed of piston in this type of engine was generally about 400 ft . per minute , and the weight of machinery about 3 cwts . per I.H.P. Direct - acting ...
Page 24
... less . Another important feature in the progress made is the great increase in the total engine - power now available for the propulsion of vessels . For example , in H.M.S. ' Terrible , ' which , in 1845 , represented the finest type ...
... less . Another important feature in the progress made is the great increase in the total engine - power now available for the propulsion of vessels . For example , in H.M.S. ' Terrible , ' which , in 1845 , represented the finest type ...
Page 34
... ; which would tend to show that the ebullition was less on the thicker plates , and consequently that their evaporative power was inferior to that of the thin plates . The difference , if any , is 34 THE MARINE STEAM - ENGINE .
... ; which would tend to show that the ebullition was less on the thicker plates , and consequently that their evaporative power was inferior to that of the thin plates . The difference , if any , is 34 THE MARINE STEAM - ENGINE .
Page 47
... less than one - third the heat is produced that would be yielded if the combustion were complete and the products passed off in the form of carbonic acid . It is therefore necessary , especially with thick fires , to admit air above the ...
... less than one - third the heat is produced that would be yielded if the combustion were complete and the products passed off in the form of carbonic acid . It is therefore necessary , especially with thick fires , to admit air above the ...
Page 49
... less decreased , so that the results from the radiation of heat from the burning fuel are greater . Having now rapidly glanced at the processes of com- bustion , we will direct attention to the boilers themselves , and consider the ...
... less decreased , so that the results from the radiation of heat from the burning fuel are greater . Having now rapidly glanced at the processes of com- bustion , we will direct attention to the boilers themselves , and consider the ...
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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.