A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 540
given out by fche engine per minute=B.H.r. x 33000. XXXIX STEAM TURBINES 515 The ratio of these quantities of energy gives the efficiency of theengine mechanism, and is called the mechanical efficiency of the engine. ,T , . , „, . b.h.p. x 33000 Mechanical efficiency = nnnnn J I.h.p. x 33000 B.H.P.… … Fig. 472.—Action of the de Laval steam turbine. wheel to revolve. Part of a de Laval steam turbine is shown inFig. 472. In this type of turbine, the steam is brought to a nozzleand allowed to expand in passing through it. The expansion isapproximately adiabatic, and the work which would have been…
Physics
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