. The Street railway journal . er installation to the changing demandupon the boilers. The economizers are enclosed by meansof metal sectional covering insulated with prepared asbestosblocks. FEED-WATER SYSTEMUnder ordinary conditions the boiler feed-water is de-livered from the pump house at Mianus through a to a concrete reservoir of 600,000 gals, capacity situ-ated just outside the power house. From this reservoir the or the economizers. An emergency feed-water supply sys-tem is also provided, consisting of two Hancock inspirators,taking water from either source of supply and del
. The Street railway journal . er installation to the changing demandupon the boilers. The economizers are enclosed by meansof metal sectional covering insulated with prepared asbestosblocks. FEED-WATER SYSTEMUnder ordinary conditions the boiler feed-water is de-livered from the pump house at Mianus through a to a concrete reservoir of 600,000 gals, capacity situ-ated just outside the power house. From this reservoir the or the economizers. An emergency feed-water supply sys-tem is also provided, consisting of two Hancock inspirators,taking water from either source of supply and delivering itthrough an independent line to the boilers. The pumping equipment at Mianus comprises two single-acting vertical triplex plunger pumps, geared to Westing-house three-phase motors. One of these is of sufficientcapacity to meet the requirements of the plant running non-condensing, and the other to supply all the fresh waterneeded when running condensing. These pumps are operatedby current obtained from the power CROSS-SECTION OF STATION THROUGH TURBINE ROOM make-up water flows by gravity to two 13,000-gal. feed-water tanks located in the boiler room basement. Thesetanks also receive the discharge from the hot-well water is then drawn from these tanks by the feedpumps and delivered through the feed-water heaters andthe economizers into the boilers. An auxiliary source offeed-water supply is provided for by a connection to themains of the Greenwich Water Company. The feed pumps, which are three in number, are of thecompound direct connected duplex outside-packed plungertype. Provision is made for connecting either source offeed-water supply direct to the suction side of the feed-water pumps, and also for by-passing the feed-water heater INDUCED-DRAFT SYSTEMAfter leaving the economizers the flue gases pass throughsheet-iron flues to the fan chamber over the center of theboiler room. Here four 14-ft fans, direct connected tohorizontal high-speed engines, d
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
