The mechanical engineer's pocket-book. A reference-book of rules, tables, data, and formulæ, for the use of engineers, mechanics, and students (1910)
Kent, William, 1851-1918 · New York, J. Wiley & sons · leaf 1115
maximum energyis abstracted from the steam when the anglebetween Vz and Vb = 90 - 1/2 /?, and the effi-ciency is cos /? -*- cos21/2 0. For details of design of blades, and of turbinesin general, see Moyer, Foster, Thomas, Stodolaand other works on Steam Turbines, also Pea-bodys Thermodynamics.… … Impulse. 1. Few stages. 2. Expansion in nozzles. 3. Large drop in pressure in a stage. 4. Initial steam velocities 1000 to 4000 ft. per sec. 5. Blade velocities 400 to 1200 ft. per sec 6. Best efficiency when the blade velocity is nearly half the ini-tial velocity of steam. Reaction. Many stages.…
Mechanical engineering
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