File:Factory and industrial management (1891) (14762072504).jpg

Identifier: factoryindustria15newy (find matches)
Title: Factory and industrial management
Year: 1891 (1890s)
Authors:
Subjects: Engineering Factory management Industrial efficiency
Publisher: New York (etc.) McGraw-Hill (etc.)
Contributing Library: Engineering - University of Toronto
Digitizing Sponsor: University of Toronto

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he whole,the above formula, used directly, is sufficient for our purpose. As the horse power to be transmitted equals 412,500 at 20 percent, loss (330,000 h.p. delivered at the railway line), the totalamount of copper necessary is 65,175,000 pounds. We therefore make the following comparison : Case I. Case j. Allowable loss in pressure from water powers to railway line 20^/r Total h.p. to be delivered to railway line at supply feeders of sub-stations 330,000 330,000 Total h.j). at source of power 412,500 330,000 Number of power stations 2 11 Total h.p. at each power station 206,250 30,000 Total distance, in miles, ))owcr is transmitted from each station 100 o Pressure at source of power (volts) 20,000 10,000 ** railway line (volts; 16,000 10,000 ** lost in line (volts) 4,000 o No. of sub-stations supplied from each source 15 3 Average length of sub feeders (miles) 10.625 4.25 Number of sub stations on each grouj) of sub-feeders 7-5 3 Pounds of copper in transmission line 65,1 75,000 o
Text Appearing After Image:
E. RAILWAY I;KTVVEEN NEW YORK AND IlilLADKLPHIA. LOCAL TOWKR STATIONS. 981 982 APPLICATION OF ALTERNATING CURRENTS We give below a tabulated estimate of the cost of our proposedtiansmission line. Right of way—two strips 100 feet wide and /oo miles long = about 2,500 acres @ $1,000, average $2,500,000 Engineering, 2^/c ot\ $15,000,000 300,000 Clearing 600 acres (5 $100 60,000 Bridges, viaducts, or sub-marine cables, say (an approxi-mate estimate) 1,500,000 Fencing i 00,000 Crossings, say 120 (5,- $1,000 i 20,000 Signals for guarding and repairing 200 miles (7i 51,000 200,000 Telegraph 200 miles @ $1,000 200,000 Narrow-gauge repair track and equipment, 200 miles @ $5,000 1,000,000 Feeders 65,175,000 pounds @ 15 c in place 9,780,000 Pole line, 11,000 poles set in concrete (a $100 each. . . 1,100,000 Discount on $25,000,000, 3^ 100-year bonds 1,250,000 Interest on bonds to opening of road, say, 10 years ofconstruction, averaging $2,500,000 per annum @ Z/r 4,125,000 Taxes to opening of r

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