. The Street railway journal . CROSS-SECTION OF POWER PLANT. BOILER ROOM BOILER ROOM The boiler room equipment consists of sixCahall-type water-tube boilers. Four ofthese boilers are of the two-drum, sixteen-section type, with 24-ft. x 42-in. drums, andnine 20-ft. x 4-in. diameter tubes to a grate surface is 66l/2 sq. ft., and thenominal rating of each boiler is 300 hp. Theother two boilers are of the three-drumtwenty-one-section type, nine tubes to a sec-tion, the drums and tubes being of the samesize as in the other four boilers; the nominalrating of these boilers is 400 hp each.
. The Street railway journal . CROSS-SECTION OF POWER PLANT. BOILER ROOM BOILER ROOM The boiler room equipment consists of sixCahall-type water-tube boilers. Four ofthese boilers are of the two-drum, sixteen-section type, with 24-ft. x 42-in. drums, andnine 20-ft. x 4-in. diameter tubes to a grate surface is 66l/2 sq. ft., and thenominal rating of each boiler is 300 hp. Theother two boilers are of the three-drumtwenty-one-section type, nine tubes to a sec-tion, the drums and tubes being of the samesize as in the other four boilers; the nominalrating of these boilers is 400 hp each. For feed-water purposes there are twosingle Marsh 12-in. x 7^-in. x 12-in. 4000 hp special Cochrane open heater isused for heating the feed water. On the boilerroom side of the dividing wall and behind theboilers is a main steam header, 14 ins. indiameter and 140 ft. long, that supplies the the bottom of all excavations, andaverage 10 ft. high, 1 ft. 9 ins. wideat the top, and 2 ft. 6 ins. wide at thebottom, being widened at each piercorresponding
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
