. La ferrovia di strada revisione . Ted, sarà sufficiente a dichiarare che l'impianto di economizzazione qui consists di 704 tubi diviso come numero su entrambi i lati del camino e direttamente dietro le caldaie. Ogni tubo è alto 9 piedi e 4^ pollici di diametro, così holdingotto galloni di acqua. I tubi sono colati verticalmente in modo da dare la massima resistenza ed evitare le blowhole, che sarebbe fatale fino alla fine desiderata di super-riscaldamento dell'acqua. Molti dispositivi simili sono stati madeusing i tubi ordinariamente gettati, ma in ogni caso blwholes o più grave problema ha terminato la loro usefulness.the
2413 x 1036 px | 40,9 x 17,5 cm | 16,1 x 6,9 inches | 150dpi
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. The street railway review . ted, it will beclear enough to state that the economizing plant here con-sists of 704 pipes divided as to number on either side ofthe stack and directly back of the boilers. Each pipe is9 feet high and 4^ inches in diameter, thus holdingeight gallons of water. The pipes are vertically cast inorder to give the greatest strength and obviate blowholes, which would be fatal to the end desired of super-heating the water. Many similar devices have been madeusing the ordinarily cast tubes, but in each case blowholes or more serious trouble has ended their usefulness.The fuel economizers pipes, however, are as remarked, vertically cast, five-sixteenths of an inch thick and testedto 350 pounds pressure per square inch, and to 3, 000pounds per square inch bursting pressure. This actuallyprecludes the possibility of accident, as the circumstanceswill not permit the bursting pressure. The Babcock & Wilcox boilers in use at the Intramuralpower house are of 3, 000-horse-power, and the gases passed. FUEL ECONOMIZER AT WORLDS FAIR, FROM IlIOTOfiRAIll TAKEN DURING CONSTRUCTION, -SIIOWINI. ONE MlT UI IllIis EXlOSKD. omy in larger plants has become a factor in power use.To these, causes the power users of the west have toreturn thanks for the better dividends resultant fromgreater economy in the power room. The fuel economizing apparatus, as has been hinted, is now for the first time being vigorously pushed in thewest, because the western power user is becoming morenumerous and the power used is becoming greater, thusdemanding more modern machinery and better methods. The very simplicity of the apparatus seems to arguefor its more extended use, consisting as it does of aa series of connected upright pipes holding the boilerfeed water. These pipes are placed in some convenientplace where the waste but heated gases from the furnacemay pass among them, heating the water and then pass-ing to the stack, having the last redeemable portion ofheating energy wrested f
