 | Clement Mackrow - 1879 - 552 pages
...gallons discharged per minute. c = number of cubic feet discharged per minute. D = diameter of pump in inches. L = length of stroke in feet. N = number of strokes per minute. H = horse power to raise G gallons or c feet per minute. h = height water is to be lifted. G = -03401NLD2... | |
 | Park Benjamin - Mechanical engineering - 1880 - 1004 pages
...two sides of the latter. Let P equal the indicated horse-power, m the mean pressure in the cylinder in pounds per square inch, A area of piston in square inches, /S length of stroke in feet, and К number of revolutions per minute : A x /nx 2 x *!? x /? then P... | |
 | Clement Mackrow - 1884 - 530 pages
...gallons discharged per minute. c = number of cubic feet discharged per minute. l) = diameter of pump in inches. L = length of stroke in feet. N — number of strokes per minut e. H = horse power to raise G gallons or c feet per minute. // = height water is to be lifted.... | |
 | Charles Day - Indicators for steam-engines - 1895 - 224 pages
...piston in square inches. Let P = pressure per square inch in pounds ; A = sectional area of cylinder in square inches ; L = length of stroke in feet ; N = number of strokes per minute ; then P x A x L = work done in one stroke ; /. PxAxLxN = work done in N strokes = work done per minute.... | |
 | Industrial arts - 1893 - 652 pages
...[79921.]— Horse Power.— ШР = PLAN 33,000 Where P = mean pressure throughout stroke ; A - area 01 piston in square inches ; L - length of stroke in feet ; N = number of strokes per minute. With cut-off •! of stroke, mean effective pressure is nearly 201b. per square inch ; 0 terminal pressure... | |
 | Charles Day - Boilers - 1898 - 250 pages
...piston in square inches. Let P = pressure per square inch in pounds ; A = sectional area of cylinder in square inches ; L = length of stroke in feet ; N = number of strokes per minute ; then P x A x L = work done in one stroke ; . • . PxAxLxN = work done in N strokes = work done per... | |
 | John Goodman - Mechanical engineering - 1899 - 626 pages
...work represented by the horizontally shaded area CDE = E«. Let/e = the mean effective pressure of CDE in pounds per square inch A = area of piston in square inches CE = the length CE expressed in feet, measured to same scale as 1rR V = mean velocity of crank-pin... | |
 | International Correspondence Schools - Coal mines and mining - 1900 - 860 pages
...will be the indicated horsepower of the engine. Let I. II. P. = indicated horsepower of engine; P = MEP in pounds per square inch ; A = area of piston...of stroke in feet; N= number of strokes per minute. Then, the above rule may be expressed thus: 2068. The number of strokes per minute is twice the number... | |
 | 1900 - 594 pages
...INDICATED HORSEPOWER. IHP = indicated horsepower of engine; P= mean effective pressure (MEP) in Ib. per square inch; A = area of piston in square inches;...stroke in feet ; N= number of strokes per minute. . 2O67. MEAN EFFECTIVE PRESSURE. / = gauge-pressure ; k = a constant corresponding to the apparent... | |
 | Eugene Wycliffe Kerr - Force and energy - 1900 - 396 pages
...It is useful, however, in that it gives the theoretical minimum or ideal consumption of steam. Let A = area of piston in square inches; L = length of...stroke in feet ; N = number of strokes per minute; P = M EP indicated by card. Then A f . - = area of piston 1n square feet; 144 AL •- = contents of... | |
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MEP in pounds per square inch; A = area of piston in square inches; L = length of stroke in feet ; N= number of working strokes per minute. 
