The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 292
t;and when the line OM of equalpower is drawn, the vertical in-tercept gives the lost w^ork orfriction horse-power. With AAthis difference is constant, withAB it increases at a moderaterate. The efficiency, got by di-viding the ordinate of the loadline AA or AB by that of thepower line OAI (or by… … A Fig. 143, 0.5 I.H.R 1.0Efficiency Diagram. 1.0 Eff. 0.80.6
Steam-engines · Steam-turbines
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