The Marine Steam Engine: A Treatise for the Use of Engineering Students and Officers of the Royal Navy |
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Page 26
... amount of the resistance overcome - or , in other words , the force opposing the motion - by the distance through which the force acts . In British units , the distance is usually measured in feet and the force in pounds avoirdupois ...
... amount of the resistance overcome - or , in other words , the force opposing the motion - by the distance through which the force acts . In British units , the distance is usually measured in feet and the force in pounds avoirdupois ...
Page 27
... amount of work performed is repre- sented by 20 x 50 = 1,000 foot - pounds . Sometimes for convenience other units of work are used , but they are all formed on the same basis and expressed in a similar manner . For example , the work ...
... amount of work performed is repre- sented by 20 x 50 = 1,000 foot - pounds . Sometimes for convenience other units of work are used , but they are all formed on the same basis and expressed in a similar manner . For example , the work ...
Page 28
... amount of heat expended on it , is called the Efficiency of the steam . Thirdly . In the engine itself , a part of the work actually performed by the steam on the pistons is wasted in over- coming the friction of the working parts of ...
... amount of heat expended on it , is called the Efficiency of the steam . Thirdly . In the engine itself , a part of the work actually performed by the steam on the pistons is wasted in over- coming the friction of the working parts of ...
Page 30
... amount of heat in the former body and increase it in the latter . When heat is added to or abstracted from a body , one of the two following effects is produced : either the 30 THE MARINE STEAM - ENGINE . III NATURE AND PROPERTIES OF HEAT.
... amount of heat in the former body and increase it in the latter . When heat is added to or abstracted from a body , one of the two following effects is produced : either the 30 THE MARINE STEAM - ENGINE . III NATURE AND PROPERTIES OF HEAT.
Page 31
... amount of heat produced . Experiments have shown that the amount of heat generated by friction is exactly equiva- lent to the amount of work lost , and it is therefore clear that heat is of the same nature as mechanical work — that is ...
... amount of heat produced . Experiments have shown that the amount of heat generated by friction is exactly equiva- lent to the amount of work lost , and it is therefore clear that heat is of the same nature as mechanical work — that is ...
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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.