. Electric railway journal . INTERBOROUGH POWER PLANT—FIG. 3—NEW TURBINE UNIT APRIL 17, 1915] ELECTRIC RAILWAY JOURNAL 745 is shown in Fig. 2. It contained eight Reynolds, Allis-Chalmers double, horizontal-vertical, cross-compoundengines of 12,000-hp actual or 8000-hp normal ratingeach, driving 11,000-volt, revolving-field Westinghousealternators, the largest built to 1901. Each engine unitwas essentially two separate compound engines at theends of the shaft, each having a 44-in. high-pressurecylinder and an 88-in. low-pressure cylinder and of60-in. stroke, the speed being 75 By the 135
. Electric railway journal . INTERBOROUGH POWER PLANT—FIG. 3—NEW TURBINE UNIT APRIL 17, 1915] ELECTRIC RAILWAY JOURNAL 745 is shown in Fig. 2. It contained eight Reynolds, Allis-Chalmers double, horizontal-vertical, cross-compoundengines of 12,000-hp actual or 8000-hp normal ratingeach, driving 11,000-volt, revolving-field Westinghousealternators, the largest built to 1901. Each engine unitwas essentially two separate compound engines at theends of the shaft, each having a 44-in. high-pressurecylinder and an 88-in. low-pressure cylinder and of60-in. stroke, the speed being 75 By the 135-. INTERBOROUGH POWER PLANT—FIG. 4—CROSS-SECTION OF ENGINE ROOMBEFORE REMODELING deg. setting of the cranks eight impulses per revolutionwere obtained. The revolving weight on the bearings of each of theengines was 439,000 lb., and an allowance of 70,000 was made to provide for magnetic pull betweenfield magnet and armature. The shaft itself weighed63,000 lb. On account of the great mass of the revolv-ing field magnet it was possible to dispense with theflywheel, a notable advance in slow-speed generating-unit design. To these engines was later added a 7500-kw Westinghouse turbine unit. The engines exhausted into Worthington jet con-densers with triplex motor-driven circulating were changed, about 1903, to the barometric type. The boiler house consisted of a basement, two boilerfloors and a row of coal bunkers, the height from thebasement to the top of the monitor being 128 ft. Thebasement was divided into three longitudinal compart-ments for the purpose of protec
Size: 1846px × 1354px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
