. Electric railway journal . of nearly 31 ft. This accounts for the depth of thedry well originally constructed in the engine room to accommodate the circulating pumps for the barometriccondensers of the reciprocating engines. The principal problem met by the engineers in connec-tion with the installation of the present and immediatelyprospective turbines was to make use of this dry wellfor the new condensing equipment so as to secure siphoncirculation at all stages of the river. To have placedthe condensing equipment in the engine room basement,as in the ordinary arrangement, would have entai
. Electric railway journal . of nearly 31 ft. This accounts for the depth of thedry well originally constructed in the engine room to accommodate the circulating pumps for the barometriccondensers of the reciprocating engines. The principal problem met by the engineers in connec-tion with the installation of the present and immediatelyprospective turbines was to make use of this dry wellfor the new condensing equipment so as to secure siphoncirculation at all stages of the river. To have placedthe condensing equipment in the engine room basement,as in the ordinary arrangement, would have entailed anextra pumping head of 20 ft., and would have required250 hp. per condenser for pumping instead of 125 an annual cost for extra steam alone of at least$6000 based on operating one-half the time. By the arrangement shown in the drawing, it waspossible to obtain siphon circulation at a maximumpumping head of 22 ft. under the most unfavorable con-ditions, which would occur at extreme low water when FEED WATERHEATER. Basement Floor a mo .WW*// VERTICALBINE SECTION OF CONDENSER PIT SHOWING TRUNKS FROM TUR-ENHAUST AND REINFORCEMENT OF DRY WELL FLOOR two turbine units are taking circulating water throughthe existing intake and discharge conduits. This re-quired the placing of the condenser nozzles 14 ft. belowthe turbine exhaust, with a cast-iron connecting trunkbetween, and the construction of a somewhat unusualfoundation for the turbo-generator. It also requiredconstructing a new discharge well just outside the olddry well and running a new discharge conduit at a lowerlevel under the street to connect with the original con-duit at its lower level. The entire weight of this exhaust trunk and the con-densers, and part of the circulating piping with thecontained water, is carried on four sets of springs underthe condenser feet. The details of this arrangementwere carefully worked out for all conditions to avoidundue thrust on the turbines. This feature was caredfor by the c
Size: 1939px × 1289px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyorkmcgrawhillp
