. The street railway review . he exhaust piping of ca5tiron. The live steam valves are extra heavy-ribbed, bronze-seatedgate valves of the Chapman make. The working pressure is 160pounds. the Southwark Foundry & Machine Co. and is large enough totake care of the ultimate capacity of the plant, 14,000 h. p. It isvery interesting to know that the installation of this central con-denser instead of the independent condenser first contemplatedmade a saving of over $io,oco in the cost of the piping and enabledthe building to be made about 30 feet shorter. The auxiliary machinery at present installed
. The street railway review . he exhaust piping of ca5tiron. The live steam valves are extra heavy-ribbed, bronze-seatedgate valves of the Chapman make. The working pressure is 160pounds. the Southwark Foundry & Machine Co. and is large enough totake care of the ultimate capacity of the plant, 14,000 h. p. It isvery interesting to know that the installation of this central con-denser instead of the independent condenser first contemplatedmade a saving of over $io,oco in the cost of the piping and enabledthe building to be made about 30 feet shorter. The auxiliary machinery at present installed is for 7,000 h. p. ofengines only. It consists of a steam engine driving the air pumptandem and belted to the circulating pump, the latter being in thebasement. The air pump is an air comprcsser of improved type,with a Weiss positive slide valve, and works free from water, theintake of the pump being from the top of the condenser. The cir-culating pump is of the Bibus rotary type and handles only the coldinifctinn FIG. HEADERS AND FEED PIPING. The city of Chicago has a 12-foot brick tunnel in Fullerton Ave.,through which water is drawn from the lake to flush the northbranch of the Chicago River, and the company has arranged totake its supply of condensing water from this tunnel. The intakeis a 30-inch pipe, which is carried along the east wall of the build-ing, just below the level of the basement floor; the return to thetunnel is a 36-inch pipe along the longitudinal partition wall of thebuilding, also below the basement floor. The original design ofthis station contemplated the use of a separate condenser for eachengine, but this was changed and a central condenser of the Weisscounter-current type was installed. This condenser was built by Fig. 5 shows the Weiss condenser in elevation. The exhaustmain, which is in the basement of the engine room between theengine_ foundations and the dividing wall, increases in size from 22inches for the small engine to 55
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Keywords: ., book, bookcentury1800, bookdecade1890, booksubjectstreetrailroads
