. The Street railway journal . the trolley wire at night after the cars have stop-ped running, for the purpose of supplying light and smallpower to the companys shops and car houses, and also sup-plies 500-volt power to city power customers during the daytime. The efficiency guarantees of the railway motor-generator a 7-in. x 8-in. vertical engine, and two 20-in. hot wells. Allthis equipment was supplied by the Alberger Condenser Com-pany, of New York, and the installation is guaranteed tomaintain a vacuum of 28 ins. of mercury or 2-in. absolutepressure when the circulating water is supplied a


. The Street railway journal . the trolley wire at night after the cars have stop-ped running, for the purpose of supplying light and smallpower to the companys shops and car houses, and also sup-plies 500-volt power to city power customers during the daytime. The efficiency guarantees of the railway motor-generator a 7-in. x 8-in. vertical engine, and two 20-in. hot wells. Allthis equipment was supplied by the Alberger Condenser Com-pany, of New York, and the installation is guaranteed tomaintain a vacuum of 28 ins. of mercury or 2-in. absolutepressure when the circulating water is supplied at 70 deg. circulating water for the condensing system is taken froma well located 50 ft. from the boiler room towards the river,and connected therewith by an intake conduit 440 ft. long and10 sq. ft. in cross-sectional area. The discharge conduit backto the river is of the same area. The circulating pumps arelocated in the boiler-room basement next the outer circulating water is elevated by a siphon system, the. CROSS SECTION OF POWER STATION set were, at 100 per cent power factor and normal voltage: GeneratorSynchronous (IncludingMotor Friction). Full Load percent. percent. i Load 93 I Load 90 88 1 Load 80 The efficiency guarantees of the exciter sets were: Full Load per cent. f Load 88 i Load 87 \ Load . The condensing equipment consists of two Alberger coun-ter-current surface condensers, one for each turbine, with2000 sq. ft. of cooling surface each, two 6-in. x 4-in. x single-stage rotative dry-vacuum pumps, two suction centrifugal circulating pumps, each driven by highest point of which does not exceed 32 ft. above the lowwater level in the wet well. The Alberger Company also fur-nished two wet vacuum pumps for the hot wells, whose sizesare each 5^ ins. x 4^4 ins. x 5 ins. The condensation from the hot wells is used over and overin the boilers, make-up water being supplied from either theriver or th


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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884