. The Street railway journal . between two location of the valves it may beseen necessitates only one boiler beingcut out in case of derangement to thelower portion of the header, and it wouldbe possible to remove or repair sectionsof the upper portion of the header with-out shutting down any of the enginesor boilers. All of the heavy piping con-nected to the main headers is made withlong sweeping steel bends. The boilermains make a semi-circular bend overthe boiler breeching, while the enginemains drop down from the steamheaders almost to the floor, pass hori-zontally through the a
. The Street railway journal . between two location of the valves it may beseen necessitates only one boiler beingcut out in case of derangement to thelower portion of the header, and it wouldbe possible to remove or repair sectionsof the upper portion of the header with-out shutting down any of the enginesor boilers. All of the heavy piping con-nected to the main headers is made withlong sweeping steel bends. The boilermains make a semi-circular bend overthe boiler breeching, while the enginemains drop down from the steamheaders almost to the floor, pass hori-zontally through the adjacent wall andthen each is carried up through the en-gine room floor and to its engine by a90-deg. and a i8o-deg. bend. Themain to the turbine, however, does notcome above the engine room floor. Al-though the manner in which steam is taken from the head-ers reduces the liability of entrained moisture being carriedover with the steam, separators are placed in each enginemain at the lowest point. The lower header drains into a. GENERAL VIEW OF ENGINE ROOM, LOOKING EAST engines were used in the old power house of the companyand are of tandem compound type, while both generatorsare General Electric 60-cycle, three-phase machines. Anadditional 1500-kw turbo-generator will be installed in the2-in. drip main not provided with steam traps, and the drip station during the coming year. All of the a. c. machinesis returned through the feed pumps to the boilers. are excited from the 7S-kw turbo-generator exciter set pre- GENERATING UNITS viously referred to. The rotary converter is used either as The engine room contains five generating units having a an a. c. or a d. c. machine. After midnight the a. c. ma-total capacity of 4075 kw, a 500-kw rotary converter and a chines are usually shut down and the lighting load is car- May II, 1907.] STREET RAILWAY JOURNAL. 819 ried through the converter by the railway generators. Atother times the rotary converter furnishes power from thea. c. gener
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
