. Journal of electricity, power, and gas . on-nected to a single suction, enclosed impeller centrifugal pumpmade by the Holly Manufacturing Company, Buffalo. Power generated at Niagara Falls is transmitted to North within the specifications, and that the pump capacities andhorsepowers are well exceeded. Itesiilt ol TcNtw oi ;kpurt*N Motor Driven Puiiiiiiiip: IiiKn. Pump 1. Pump 2. Pump :). Maximum ie\-. per miii,... 746 752 711 Minimum 738 738 739 Average 743 744 743 Maximum gauge pres. lbs. Minimum . Average ? . Average liead, £eet
. Journal of electricity, power, and gas . on-nected to a single suction, enclosed impeller centrifugal pumpmade by the Holly Manufacturing Company, Buffalo. Power generated at Niagara Falls is transmitted to North within the specifications, and that the pump capacities andhorsepowers are well exceeded. Itesiilt ol TcNtw oi ;kpurt*N Motor Driven Puiiiiiiiip: IiiKn. Pump 1. Pump 2. Pump :). Maximum ie\-. per miii,... 746 752 711 Minimum 738 738 739 Average 743 744 743 Maximum gauge pres. lbs. Minimum . Average ? . Average liead, £eet Gallons pumped per hour. 238,000 236,300 236,700Gallons pumped in 24 hrs. at this rate 5,712,000 5,672,000 5,712,000 Kilowatt input per Gallons per kilowatt hour 1,454 1,464 1,443 Hydraulic 318 327 319,5 Electric horsepower 456 455 Efficiency per cent 71 70 Duty. foot-pound per 1000 k. w ,000 31, 31, Liegrees temperature rise in 15 hours 41 38 43. EIr Dri rn PiiiniJ ul Luikport \. V. Tonawanda at 22,000 volts and is stepped down to 440 voltsat the pumping station by three 500 kilowatt, oil insulated,water cooled transformers. The three motor driven pumping units were recentlygiven a very complete test, which developed some interestingeconomics of electric operation. Each unit was run contin-uously for 15 hours, during which time readings of the elec-trical input were taken every five minutes; readings of theVenturi water meter every ten minutes; pressure gauge everyfive minutes, and revolutions of pump every fifteen results are given in the accompanying table, which showsthat all three of the pumps exceeded the duly re(|Uiremeiil i>!27,000,000 foot-pounds by approximately ,000 foot will be further noted that the temperature rises are well In the case of the Lockport pumping station, electricalenergy is purchased at $ per horsepower year. The costof power
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Keywords: ., bookcentury1800, bookdecade1890, bookidjo, booksubjectelectricity
