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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
A Fig. 143, 0.5 I.H.R 1.0Efficiency Diagram. 1.0 Eff. 0.80.6 … 20 Fh.R 10 o Simple 9x36• Compound 9,16x36+ Triple 9,16,24x36 ^F 0 I.HP 20 40 A A 60 80 100 120 140 Fig. 144. — Machine Efficiency of Sibley College Engine: see reference under Fig.95. WTiole engine rated 150 h.p. at about 90 r.p.m. Output measured bybrakes. (d) Examples of Performance. — In Fig.…Steam-engines · Steam-turbines
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