The steam engine and turbine; a text-book for engineering colleges (1911)
Heck, Robert Culbertson Hays, 1870- · New York, D. Van Nostrand company · leaf 511
in Fig. 340. Test 31 isanother case of excessive vacuum with consequent low value of Er.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)… … ^mim*
Steam-engines · Steam-turbines
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