Identifier: streetrailway03amer (find matches)
Title: The street railway review
Year: 1891 (1890s)
Authors: American Street Railway Association Street Railway Accountants' Association of America American Railway, Mechanical, and Electrical Association
Subjects: Street-railroads
Publisher: Chicago : Street Railway Review Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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day, Test No. 3 _. $1683 Cost of lubricationand waste. Test No. 3, per day $4.02 Cost per horse-power hour, Test No. 3 $001110 Cost per electric horse-power hour, Test No 3 $0 01336 Cost per car mile. Test No. 3 _.. $0.01904 In test No. 3 less than half the power of the plant was used, and con-sequently allowance must be made for the fact that the item of laborwas somewhat high in proportion. It is claimed that no more laborwould be necessary to run the plant at its full capacity. The authors then make a comparison of the cost of concentratedpower as against subdivided power, which we quote in full. In making this comparison the results as obtained from above testsat Thirty-first street are compared with those obtained from the test ofthe triple expansion engines at Power House No. i. In order that theresults may be properly compared the following assumptions are sup-posed to apply to both plants, though they were different when thetest was madeCost of fuel oil per gallon _ _ $0.0257
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nsw 14 if- A DIAGRAM i2M. a i i (■ 1 T 3 B OF CARS AND PASSENGERS.—ST. PAUL, MARCH 23, lH Test No. 3 was made on the Thirty-first street station October 21 and26, 1S92. The plant consists of ten 16 by 27 by 16-inch Westinghousecompound engines, nine of which are belted directly to Thomson-Hous-ton generators, and one to an exciter and arc light machine. On Octo-bar 21 a steady load test was made, the generators feeding into a steadyresistance. The main result of interest in this test is that the ratio ofsteam used in atomizing the fuel oil, to the total steam, was found to bethe surprising amount of 13^*0 per cent. Test No. 3 b was made with the Thirty-first street plant in actualservice, October 26, 1892, lasting 20 hours and 40 minutes. Average horse-power,. _ 5~2.$ Maximum horse-power 901.25 Minimum horse-power _ 77 49 Average electric horse-power 434-2 Percentage of loss between engines and line(by difference).16.9 per cent Equivalent water from and at 212° per pound of fuel

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