. Canadian transportation & distribution management. per hour; From the line in fig. 9, Lbs. mean ef-fective pressure. Thus, i. ih. p. = = Also, i. h. p. = 4 () (.012144) ()= At cut off we obtain from thecurves in fig. 7 pounds of steam pera. h. p. per hour, which gives i. h. p. = ,and from .the curves in fig. 9 mean ef-fective pressure, which gives i. h. p. ? - (By looking at the above sets of values,it can ibe seen that at 48% cut off the i. figured from the basis of lbs, of steamper i. h. p. is greater than that figur
. Canadian transportation & distribution management. per hour; From the line in fig. 9, Lbs. mean ef-fective pressure. Thus, i. ih. p. = = Also, i. h. p. = 4 () (.012144) ()= At cut off we obtain from thecurves in fig. 7 pounds of steam pera. h. p. per hour, which gives i. h. p. = ,and from .the curves in fig. 9 mean ef-fective pressure, which gives i. h. p. ? - (By looking at the above sets of values,it can ibe seen that at 48% cut off the i. figured from the basis of lbs, of steamper i. h. p. is greater than that figured fromthe basis of the m. e. p., and at cutoff just the reverse is true Therefore, theproper values must lie somewhere between48 and cut off. The proper value of cut off wasfound to give the same i. h. p. figured fromthe pounds of steam per i. h. p. per houras figured from m. e. p.; that is, with off, the steam per i. h. p. per hour as obtained from the curve and givesan i. h. p. of The m. e. p. at this. Fig. 9.—Relation Between and Cutoff forSuperheated Steam Locomotive. cut off is , and gives an i. h. p. of are so near the same that the was taken as the i. h. p. developedwhile burning 110 lbs. of coal per sq. grate. The four values mentioned abovewere used in the tables. The same pro-cess was used in determining the values foreach line of table V. Column XV. of table V., which gives theper cent increase in indicated horse powerof the superheater locomotive over theother locomotive, when using the sameamount of coal, equals column XIV. minuscolumn XIII. divided by column XIII. andmultiplied by 100. Discussion of Results. INCREASED POWER DUE TO SUPER-heating.—It can be seen from column XV.,table V., that the increase in power due tosuperheating, when burning from 110 to130 lbs. of coal per sq. ft. of grate sur-face per hour, varies from to from the values in this column it canb
Size: 1767px × 1414px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherdonmi, bookyear1913
