. Canadian transportation & distribution management. 0—/5—/20 3/2 /03 3 685 //.68 9 34 6048 7404 548 8 , 2/87 3 SO 5288 44/. 3 /5 30—/6—/20 30 0 //O 3 696 293/ // 7/ 6445 75 42 2254 3 50 6137 49/ O /6 30-/6—/ 20 29 9 12/7 726 280 0 1295 8 79 5506 J 24 50 6342 0054 the individual test, together with the in-dicated horse power constant or the loco-motive. Column XXIII., which gives the machinefriction in per cent, of indicated horse-power, equals column XXII. divided byrolumn X. in table I. and multiplied by100. F 3 3, were at a speed of 30 miDes an hour, atthe
. Canadian transportation & distribution management. 0—/5—/20 3/2 /03 3 685 //.68 9 34 6048 7404 548 8 , 2/87 3 SO 5288 44/. 3 /5 30—/6—/20 30 0 //O 3 696 293/ // 7/ 6445 75 42 2254 3 50 6137 49/ O /6 30-/6—/ 20 29 9 12/7 726 280 0 1295 8 79 5506 J 24 50 6342 0054 the individual test, together with the in-dicated horse power constant or the loco-motive. Column XXIII., which gives the machinefriction in per cent, of indicated horse-power, equals column XXII. divided byrolumn X. in table I. and multiplied by100. F 3 3, were at a speed of 30 miDes an hour, atthe same pressures as were used on theoriginal locomotive^—that is, 200, 160 and120 lbs. The conditions of pressure andcut off under which the tests were runare shown diagrammatically in fig. 3, inwhich the cut off is determined by the po-sition of the reverse lever notch. Each circle represents a test, and the numberwritten in the ciTCle represents the labor-atory number by which the tests are iden-tified. The results of tests under super-. Fig. 3.—Conditions of Pressure and Cutoff for Superheated Steam 4.—Relation Between Equivalent Evapora-tion per Pound of Dry Coal and Equiva-lent Evaporation per sq. ft. of HeatingSurface per Hour for SuperheatedSteam Locomotive. 1 1 J 4- r — W 1 0 ? 25 a 3 t 0 <?/ Coo ? er cer t /O 20 30 40 SO 60 70Fit 6 Fig. 5.—Relation Between Equivalent Evapora-tion per Pound of Dry Coal, and Dry Coalper sq. ft. of Grate Surface per Hour forSuperheated Steam 6.—Relation Between Equivalent Pounds ofsteam per Hour and Cutoff forSaturated Steam Locomotive. heated steam are shown in tables III. andIV. It will be seen that the reverse leverwas carried to a higher notch than with July, 1913.] CANADIAN RAILWAY AND MARINE WORLD. 301 the saturated steam. PERFORMANCE OF THE BOILER. - The equivalent evaporation per square foot of . water and superheating
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Keywords: ., bookcentury1900, bookdecade1910, bookpublisherdonmi, bookyear1913
