The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 509
er case of excessive vacuum with consequent low value of £/r.Beside lowering the relative efficiency, this condition may be carried sofar as to pass the limit of increase of absolute efficiency E, in a manneranalogous to that set forth for the engine in Fig. 128. (i) Influence of Speed. —… … .^$$$$$$^- x?$?;$^$$^ /j^J^^^^^ Fig. 345. — Various Speeds with the Same Vanes. the short parallel lines above and below the vane profiles indicate rela-tive directions of steam flow. At II, as the extreme of underspeeding,the vanes are held fixed; then with the assumption of no bucket…
Steam-engines · Steam-turbines
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