. The Street railway journal . ption of it, and the pub-lication of the results in the matter of coal consumption from thetime it was placed in commission, showing the gradual improvementin efficiency. This station was originally designed for the Rhode Island Sub-urban Railway Company to furnish power for its lines operatingin the vicinity of Providence. It was intended to use horizontal 59° STREET RAILWAY JOURNAL. [Vol. XXVI. No. 14. units, and two 1500-kw alternating-current units and one 1600-kwdirect-current unit were purchased. Before work on the buildinghad progressed beyond the foundati
. The Street railway journal . ption of it, and the pub-lication of the results in the matter of coal consumption from thetime it was placed in commission, showing the gradual improvementin efficiency. This station was originally designed for the Rhode Island Sub-urban Railway Company to furnish power for its lines operatingin the vicinity of Providence. It was intended to use horizontal 59° STREET RAILWAY JOURNAL. [Vol. XXVI. No. 14. units, and two 1500-kw alternating-current units and one 1600-kwdirect-current unit were purchased. Before work on the buildinghad progressed beyond the foundations, however, it was decided toincrease the capacity of the station by installing two additionaldirect-current units of 2500-kws each. This required a number ofchanges in the structure, and necessitated double-decking the boilerroom in order to provide the necessary additional boiler present equipment of the station consists of fourteen horizontalwater-tube boilers of 520 hp each, eight on tbe lower floor and six. at the bottom, while the water enters at the bottom and dischargesat the top. Each heater contains 750 sq. ft. of heating surface,and in practice all of the steam from the auxiliaries is condensedand is discharged at a temperature only about 35 degs. higher thanthe incoming cold water. The average daily output of the stationis 102,500-kw hours. The following is the performance of the station under actualservice conditions from the time it was started in regular service,February, 1904. It should be borne in mind that the first batteryof boilers with superheaters was installed eleven months after thestation was started, and four months thereafter two additionalbatteries of boilers with superheaters were commissioned, and theperformance of the station is therefore given forthe period covered by these different conditions. Eleven months, saturated steam, lbs. ofcoal per kw-hour. Four months, slightly superheated steam (norecord of temperature kept),
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
