Steam engines, prepared in the Extension division of the University of Wisconsin (1919)
Shealy, Edward Marvin · New York, McGraw-Hill · leaf 115
8,subtract the combined lengths of the negative ordinates, whichnumber from 9 to 20, then multiply the difference by thescale of the spring and divide by 20, which is the number ofordinates. The result will be the mean effective pressure for thewhole diagram. For example, if the combined length of… … Fig. 67. 20 = 6.8 lb. m. which is the average pressure for the entire diagram. The ordinate method of measuring the mean effective pressure,described above, gives only approximate results. The approxi-mation is closer the larger the number of parts into which the INDICATED AND BRAKE HORSEPOWER 101…
Steam-engines
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
