File:Mastering power production; the industrial, economic and social problems involved and their solution (1921) (14778161102).jpg

Identifier: masteringpowerpr01pola (find matches)
Title: Mastering power production ; the industrial, economic and social problems involved and their solution
Year: 1921 (1920s)
Authors: Polakov, Walter N. (Walter Nicholas), 1879-1948
Subjects: Efficiency, Industrial Power-plants
Publisher: New York, The Engineering magazine company
Contributing Library: The Library of Congress
Digitizing Sponsor: The Library of Congress

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oors and it takes them longer to coal than to fire-men. . . . Unfortunately, however, the old-fashioned way ofconducting boiler trials and reporting on same totally disregardsnot only the factors of human skill and interest in the work,but even neglects to record such important physical conditionsas the force of draft and velocity of gases through boiler, etc.,108thus rendering the entire report utterly without value as it doesnot point out the way for duplication or perhaps improvement. 239 The latest code of The American Society of Mechanical En-gineers for conducting boiler trials gives similarly unsatisfactoryand antiquated rules, utterly disregarding such an importantobject of tests as setting task for everyday performance. Be-cause a locomotive can make 100 miles an hour nobody expectsa train to get from New York to San Francisco in 30 hours,neither is the 20th Century Limited pulled by an old yard engine.In running boiler, turbine and other power plant tests similar 670 27 2175
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K30 A.M. Fig. 64.—Log of the Test of Hydroelectric Plant Graphically illustrates the relation between the diminished effective hydraulichead (due to drop of water level over the dam and rise of water level in the tailrace) and decreased capacity of the generating units. On the basis of such teststhe pre-determination of available water power can be made, as exemplified onthe diagram, Fig. 63. inconsistencies are unfortuately only too often made. Knowl-edge of how fast an engine can run does not tell a passengerwhen he gets to his station, likewise knowledge of maximumcapacity and efficiency of plant equipment does not indicate whatoperating economy may reasonably be expected from a plant andwhat should be accepted as standard, all limiting factors beingtaken into consideration. From this standpoint all codes and rules for conducting boilerand engine trials are utterly unfit to guide the work of settingstandards or tasks. The common shortcoming of all of them 240 is that they deplora

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