The Marine Steam Engine ...Longmans, 1899 - 519 páginas |
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Página 19
... producing or resisting motion in a body , and may be represented by a pressure or a pull . The British unit of force is the ... produced . This union of force and motion is essential to the conception of work . However great the pressure ...
... producing or resisting motion in a body , and may be represented by a pressure or a pull . The British unit of force is the ... produced . This union of force and motion is essential to the conception of work . However great the pressure ...
Página 20
... produce waste of work , so that the whole work done by the machine is not usefully employed , some of it being exerted in overcoming the friction of the mechanism , and some wasted in various other ways . The fraction representing the ...
... produce waste of work , so that the whole work done by the machine is not usefully employed , some of it being exerted in overcoming the friction of the mechanism , and some wasted in various other ways . The fraction representing the ...
Página 22
... produced : either the temperature of the body is altered , or its state is changed . For example , if heat be added to water under the atmospheric pressure , the temperature is increased until it reaches 212 ° Fahr . After this the ...
... produced : either the temperature of the body is altered , or its state is changed . For example , if heat be added to water under the atmospheric pressure , the temperature is increased until it reaches 212 ° Fahr . After this the ...
Página 23
... produces by its . disappearance , mechanical energy in the proportion of 772 foot - pounds for each unit of heat . This statement forms also the first law of the science of thermo - dynamics . Communication of heat . - Heat may be ...
... produces by its . disappearance , mechanical energy in the proportion of 772 foot - pounds for each unit of heat . This statement forms also the first law of the science of thermo - dynamics . Communication of heat . - Heat may be ...
Página 25
... produced by the application of heat to water . At first the tempera- ture of the water is raised . The particles of ... produce any increase in the temperature . This heat is known as latent heat . During the period when heat was ...
... produced by the application of heat to water . At first the tempera- ture of the water is raised . The particles of ... produce any increase in the temperature . This heat is known as latent heat . During the period when heat was ...
Otras ediciones - Ver todas
The Marine Steam Engine: A Treatise for Engineering Students, Young ... Richard Sennett Sin vista previa disponible - 2018 |
The Marine Steam Engine: A Treatise for Engineering Students, Young ... Richard Sennett Sin vista previa disponible - 2016 |
Términos y frases comunes
action air-pump amount angle arrangement auxiliary Belleville boiler bilge blades boilers bottom cause cent centre coal cock combustion chamber compound engines compression condenser connected considerable crank crank-shaft Crown 8vo curve diameter drain 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 Illustrations increased indicator diagram initial pressure jacket lever low-pressure cylinder manganese bronze marine engines mean effective pressure motion necessary obtained orifice paddle-wheel piston plates ports position practice prevent propeller pump quantity rate of expansion reduced revolutions per minute riveted Royal Navy safety valves screw sea-water shaft ship shown in Fig side slide-valve space speed square inch steam pipes steam pressure steel stokehold stroke suction surface condensers temperature triple expansion engines tubes vertical vessels volume water-tube boilers weight
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Página 21 - The most common unit is the British thermal unit (btu), the quantity of heat necessary to raise the temperature of one pound of water one degree Fahrenheit.
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Página 142 - 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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Página 142 - I intend, in many cases, to employ the expansive force of steam to press on the pistons, or whatever may be used instead of them, in the same manner as the pressure of the atmosphere is now employed in common...