Stationary steam engines, simple and compound; especially as adapted to light and power plants . e generator is somewhatincreased for a given power ; but since, for a stated output,the quantity of metal employed is not variable to any largedegree, the difference in this respect, especially for largepowers, is not enough to influence the solution of the ques-tion in any important degree. Steam-engines employed for this system of application ofpower are sometimes horizontal, oftener vertical in largepowers, and may be of any type found useful for any pur- 268 STEAM ENGINES FOR poses, from the si
Stationary steam engines, simple and compound; especially as adapted to light and power plants . e generator is somewhatincreased for a given power ; but since, for a stated output,the quantity of metal employed is not variable to any largedegree, the difference in this respect, especially for largepowers, is not enough to influence the solution of the ques-tion in any important degree. Steam-engines employed for this system of application ofpower are sometimes horizontal, oftener vertical in largepowers, and may be of any type found useful for any pur- 268 STEAM ENGINES FOR poses, from the simple upright semi-portable style of en-?gine to the triple- and quadruple- expansion marine type,-which latter is a favorite with a number of designers andengineers. The following are illustrations of such applica-tions of the moderate-speed and the high-speed engines. As an excellent illustration of the direct-connected en-gine the accompanying plate is given—a McEwen enginewith the generator of Professor Ryan, head of the Depart-ment of Electrical Engineering of Sibley College, who was. Inertia Governor. one of the early designers of this type. The engine is builteither horizontal or direct, like other forms shown generator has from lo to 20 poles, as speeds of enginevary from 500 down to 150 revolutions and power demanded ELECTKIC LIGHTING PLANTS. 269 increases from, ordinarily, 10 or 15 to 300 or 400 K. W.,400 or 500 H. P. The engine has the same general form as the high-speedengine of the best makers usually, with well-studied detailsand an interesting type of governor, very simple, very effec-tive, and very reliable. The action of centrifugal force andthat of inertia conspire to insure quick, strong, and accu-rate movement, while tlie dash-pot, F, prevents swinging. Apivoted and weighted bar, CC, a spring, G, and the dash-pot constitute the whole system. The bearing and its pinare fitted with steel rollers and no lubrication is needed. The generator here s
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectsteamen, bookyear1902
