 | Lester Clyde Lichty - Natural gas - 1924 - 546 pages
...horse-power per cylinder = o?rh?w where p = mean effective pressure in pounds per square inch; 1 = length of stroke in feet; a = area of piston in square inches; n = number of explosions per minute. Example. — The moan effective pressure in a single cylinder,... | |
 | Fans (Machinery) - 1925 - 640 pages
...be expressed by the familiar formula H ?MN = PAS ~ "33000 " 33000 where IHP = indicated horse power P = mean effective pressure in Ibs. per sq. in. L = length of stroke in ft. A=area of piston in sq. in. N = number of strokes per min. (2XRPM for double acting engines) S=... | |
 | William J. Foster - Airplanes - 1925 - 780 pages
..."torque.") Let P = Brake mean effective pressure, pounds per square inch (Sometimes written BMEP or ^P) L = Length of stroke in feet A = Area of piston in square inches N = Number of power impulses per minute = RPM x No. of Cyl. (for four-cycle engine) 2 T = Crankshaft... | |
 | William Harrison Motz - Refrigeration and refrigerating machinery - 1926 - 698 pages
...given compressor cylinder may be found, for a single-acting cylinder, as follows: PLAN hp.= — 396000 P = mean effective pressure in Ibs. per sq. in. L = length of stroke in inches, in which A = area of piston in sq. in. N=rpm The mean effective pressure, P, may be found as... | |
 | David Louis Jones - Diesel locomotives - 1926 - 636 pages
...following simple formula is used, PLAN IHP 33000 Where, P = the mean indicated pressure per square inch. L = Length of stroke in feet. A = Area of piston in square inches. N = Number of working strokes per minute. As the mechanical losses due to friction and the power lost... | |
 | John Charles Stone - Mathematics - 1927 - 368 pages
...horse power of a steam engine is , p X l X o X n np - where p = pressure per pound per square inch ; l = length of stroke in feet ; a = area of piston in square inches ; TO = number of strokes per second. PROBLEMS IN WORK AND POWER 2. By the use of a lifting crane, used... | |
 | William Augustus Mitchell - Mechanical engineering - 1928 - 422 pages
...rate of doing work (horse power) of this simple assumed engine can be calculated as follows : Assume l = length of stroke in feet ; A = area of piston, in square inches; p = pressure in pounds per square inch ; N = number of revolutions per minute. Then, since work equals... | |
 | Society of Automotive Engineers - Aeronautics - 1922 - 784 pages
...horsepower per hour N = Engine speed in revolutions per minute Q = Torque F = Fuel consumed in a unit time L — Length of stroke in feet a = Area of piston in square inches For a given engine it is proportional to NQ"/F; and 0.6 0.8 1.0 fb* Lb.Fuel parhp.hr. IZ 1.4FIG. 6. —... | |
 | 263 pages
...the horse-power of an engine is as follows: PLAN = HP 33,000 in which P = mean effective pressure. L = length of stroke in feet. A = area of piston in square inches. N = number of strokes per minute, or twice the number of revolutions. The area of a circle is equal... | |
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... a = area of piston in square inches, n = number of strokes per minute, or twice the number of revolutions per minute. 
