. The street railway review . installed, however,was found too high and was lowered, too much heat being con-centrated on the tubes over the grate by a sort of blast actionThese boilers were installed during the summer of 1902, when thecoal strike was on, and only bituminous coal was to be had. Thewriter was verv much interested in the action of these furnaces as wide and violent fluctuations of load, these engines op-erate very nicely and regulate within very reasonable limits. Theeconomic performance at full load of 600 i. h. p. is lb. of phase current of 3,000 al
. The street railway review . installed, however,was found too high and was lowered, too much heat being con-centrated on the tubes over the grate by a sort of blast actionThese boilers were installed during the summer of 1902, when thecoal strike was on, and only bituminous coal was to be had. Thewriter was verv much interested in the action of these furnaces as wide and violent fluctuations of load, these engines op-erate very nicely and regulate within very reasonable limits. Theeconomic performance at full load of 600 i. h. p. is lb. of phase current of 3,000 alternations is in use on this electrical apparatus used for delivering power to the third railwas supplied by the Westinghouse Electric and Manufacturing power house contains three 4do-kw. direct connected alter-nators, which normally deliver current at 390 volts to the switch-board bus bars, from whence it is fed to the converters and step-upIransfonners. The transformers step the voltage up to 15,000 volts. CROSS SECTION Oli POWER HOUSE. regards smokeless combustion of soft coal. Making inquiry as re-gards the coal in use, he was told that it came from the coal fieldsof Western Pennsylvania, and was usually rather smoky. Com-bustion in these furnaces, however, seemed nearly perfect. Rarelywas smoke seen coming from the stacks, except at such times asthe furnace doors were open for stoking. In considering the causeof these facts the writer concluded that a large combustion cham-ber and some distance to travel before the gases could encountertubes to cool them, was accountable, and so reported at the time. InHeine boilers the lowest row of water tubes over the grates is en-tirely inclosed with C tile bricks from the front waterleg to withinabout 4 ft. of the rear waterleg, this tiling, as is well serving as a baffling to conduct the gases to the rearof the boiler before entering among the tubes. The dis-tance of 6 ft. from the grates to the tile-cov
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
