Identifier: railwaymechanica91newy (find matches)
Title: Railway mechanical engineer
Year: 1916 (1910s)
Authors:
Subjects: Railroad engineering Engineering Railroads Railroad cars
Publisher: New York, N.Y. : Simmons-Boardman Pub. Co
Contributing Library: Carnegie Library of Pittsburgh
Digitizing Sponsor: Lyrasis Members and Sloan Foundation

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preheat is an economic mistake which maybe expressed in terms of millions of dollars of lost earningsto tliem. The report is signed by: Munro B. Lanier, chairman;Prof. E. C. Schmidt, G. M. Basford, A. B. Appier, L. G.PUint. J. L. Hampson. O. C. Wright, and F. Kerby. DISCUSSION There have been numerous trials of feed water heatersextending over a period of many years. Difficulties experi-enced with the apparatus have always led to its abandon-ment. The question of maintenance is therefore of extremeimportance and in designs which are now being tested thisfeature has been given special consideration. In exhauststeam heaters the speed at which the water travels gives ahigh rate of heat transfer tiy reason of the scouring actionand is also effecti\-e in keeping the surfaces clean. The in-troduction of feed water heating gives promise of furtherincreasing the thermal efficiency of the locomotive which hasbeen l^rought from 3 2 to 8 per cent liy various improvementsin the last two decades.
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IX a previous article* there were given the results of testson the testing plant of the Pennsylvania Railroad atAltoona, Pa., of a class E6s Atlantic type locomotive.The present discussion is based on Testing Plant BulletinNo. 28 (copyright, 1^15, by the Pennsylvania Railroad Com-pany) which deals with the tests of a class Lis locomotive. For a long time the Consolidation (2-8-0) type was ingeneral use for freight service on the Pennsvlvania: but therequirements of heavier freight trains made greater locomo-tive capacity desirable, and as larger boiler capacity wasessential to obtain this, the Mikado (2-8-2) type was re-sorted to. This locomotive was described in the RailwayMechanical Engineer, July, 1914, page o4j. The same re-fmeraent of design is present in this locomotive and in thecla.ss K4s Pacific type, as exists in the class E6s Atlantics. The Consolidation locomotives in general use on the Penn-sylvania for the heaviest freight service up to the time that theMikado type was i

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