Heat Engines, Embracing the Theory, Construction, and Performance of Steam Boilers, Reciprocating Steam Engines, Steam Turbines and Internal Combustion Engines: A Text-book for Engineering StudentsLongmans, Green and Company, 1920 - 592 páginas |
Otras ediciones - Ver todas
Términos y frases comunes
adiabatic air pump amount of heat angle blades boiler buckets calorific value carbon cent chimney clearance coal combustion condenser connecting rod constant pressure crank pin crank shaft crosshead cubic feet cubic foot curve cylinder diameter draught dryness fraction eccentric entropy equal evaporation exhaust expansion feed-water fire-box flange formula four-stroke cycle friction fuel furnace gas engine gases gear given governor heat drop heater horse-power hydrogen increase indicator diagram internal combustion engine internal energy kinetic energy lever load locomotive mean effective pressure mechanical efficiency mixture nozzle oxygen P₁ passes pipe piston rod plate port position radius represented revolutions per minute ring saturated steam screwed shown in Fig sleeve slide valve specific heat speed spindle square inch stroke suction superheater supply surface condenser T₁ T₂ temperature thermal efficiency throttling total heat tubes turbine two-stroke cycle V₁ velocity weight wheel
Pasajes populares
Página 18 - ... the earth. A compressed spiral spring has potential energy, because if it is allowed to resume its unstrained form it can be made to do work. Likewise compressed air possesses potential energy. The energy stored in a piece of coal is potential energy, and under favourable conditions the atoms of the constituents of the coal and the atoms of the oxygen of the air will rush together and produce heat which may be converted into work. Kinetic Energy is energy due to the motion of a body. A gallon...
Página 288 - The spring K, while sufficiently rigid to transmit the motion of the main spring to the end of the arm M without buckling, is flexible enough to allow for the angular motion of that arm. The mirror is thus turned about the axis of the spindle by an amount which is proportional to the displacement of the main spring D, and therefore to the pressure under the piston. In order to give the other motion to the mirror the frame B is positively connected by linkage...
Página 20 - It is impossible for a selfacting machine, unaided by any external agency to convey heat from one body to another at a higher temperature, or heat cannot of itself pass from a colder to a warmer body.
Página 17 - In measuring work the unit which is generally used by engineers is the work done when a force of one pound acts through a distance of one foot, this unit being called a foot-pound.
Página 17 - For measuring small quantities of work the inch-pound, or the work done when a force of one pound acts through a distance of one inch, is frequently used.
Página 287 - At the top it is provided with a hook, G, the opening of which is slightly larger than the thickness of the spring. The piston is thus free to move laterally, and no binding action is possible between it and the sides of the bore, such as would occur if the piston were rigidly attached to the spring. The mirror, H, is clamped to a steel spindle, I, the ends of which are pivoted in small holes in the vertical spring cheeks, JJ.
Página 460 - The pressure of the mixture of a gas and a vapour is equal to the sum of the pressures •which each would possess if it occupied the same space alone.
Página 183 - D, on the cover in a thin sheet, and is instantly heated by contact with the steam. As the pressure in the heater is generally much less than that of the entering water, the effect of this lowering of the pressure, and sudden heating of the water, is to liberate the air in the water...
Página 19 - Ib. and foot units. 49. Total Kinetic Energy of a Body.— If a body of weight W rotates about an axis through its centre of gravity with an angular velocity...
Página 384 - ... of the same weight of water at the temperature of the engine exhaust, both quantities being reckoned from 32° F.