The Marine Steam Engine ...Longmans, 1898 - 519 páginas |
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Página 3
... represents the type usually fitted not only in the first steam vessels , but also for some years after . On the top of the piston - rod is fixed a crosshead with side - rods , s , attached at each end , which , passing down on either ...
... represents the type usually fitted not only in the first steam vessels , but also for some years after . On the top of the piston - rod is fixed a crosshead with side - rods , s , attached at each end , which , passing down on either ...
Página 17
... represented the finest type of steam war- ship of the day , the I.H.P. was less than 2,000 , and her speed about 10 knots , while in the present H.M.S. ' Terrible , ' a first - class cruiser , the horse - power is 25,600 , and the speed ...
... represented the finest type of steam war- ship of the day , the I.H.P. was less than 2,000 , and her speed about 10 knots , while in the present H.M.S. ' Terrible , ' a first - class cruiser , the horse - power is 25,600 , and the speed ...
Página 19
... represented by a pressure or a pull . The British unit of force is the weight of one pound avoir- dupois , and ... represents the amount of work done in raising a weight of one pound through a distance of one foot , or more generally the ...
... represented by a pressure or a pull . The British unit of force is the weight of one pound avoir- dupois , and ... represents the amount of work done in raising a weight of one pound through a distance of one foot , or more generally the ...
Página 20
... representing the ratio that the useful work done bears to the total energy exerted on the machine is called the Efficiency of the machine ; or Efficiency = Useful work done Total energy expended In the propelling apparatus of a vessel ...
... representing the ratio that the useful work done bears to the total energy exerted on the machine is called the Efficiency of the machine ; or Efficiency = Useful work done Total energy expended In the propelling apparatus of a vessel ...
Página 21
... representing respectively the efficiencies of the boiler , the steam , the mechanism , and the propeller . Any improvement in the efficiency of the marine steam - engine , and , consequently , in the economy of its performance , is ...
... representing respectively the efficiencies of the boiler , the steam , the mechanism , and the propeller . Any improvement in the efficiency of the marine steam - engine , and , consequently , in the economy of its performance , is ...
Términos y frases comunes
action air-pump amount angle arrangement auxiliary Belleville boiler bilge blades boilers bolts bottom cause cent centre coal cock combustion chamber compound engines compression condenser connected considerable crank crank-shaft Crown 8vo curve diameter draught eccentric efficiency evaporation exhaust expansion engines Fahr feed-water fire fitted friction funnel furnace gases gauge gear gunmetal heating surface high-pressure cylinder holes horizontal hydrometer Illustrations increased indicator diagram jacket length lever low-pressure cylinder main engines manganese bronze mean effective pressure motion necessary obtained ordinary orifice paddle-wheel piston plates ports position practice prevent propeller pump quantity rate of expansion reduced revolutions per minute riveted Royal Navy screw sea-water shaft ship shown in Fig side slide-valve space speed square inch steam pipes steam pressure steel stokehold stroke suction sufficient surface condensers temperature triple expansion engines tubes vertical vessels volume water-tube boilers weight zinc
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Página 144 - I call the steam vessel, must, during the whole time the engine is at work, be kept as hot as the steam that enters it ; first, by enclosing it in a case of wood, or any other materials that transmit heat slowly ; secondly, by surrounding it with steam, or other heated bodies ; and, thirdly, by suffering neither water, nor any other substance colder than the steam, to enter or touch it during that time...
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