. Railway mechanical engineer . since there was in the first placeno lack of air pressure, but was derived from the economyin coal and water. The following figures were compiled from the data takenduring the tests made at that time: .Average pressure maintained before repairs 1b. .\verage pressure maintained after repairs 1b. \verage air consumption in each 24 hr. day before rejiairs. 1,334,502 cu. air consumption in each 24 hr. day after repairs. 1,068,552 cu. air consumption in each 24 hr. day after repairs. cu. ft. .Amount of air conserved in one
. Railway mechanical engineer . since there was in the first placeno lack of air pressure, but was derived from the economyin coal and water. The following figures were compiled from the data takenduring the tests made at that time: .Average pressure maintained before repairs 1b. .\verage pressure maintained after repairs 1b. \verage air consumption in each 24 hr. day before rejiairs. 1,334,502 cu. air consumption in each 24 hr. day after repairs. 1,068,552 cu. air consumption in each 24 hr. day after repairs. cu. ft. .Amount of air conserved in one year 97,071,750 cu. ft. Cost of coal and water in ccmprcssinc cu. ft. of air a day $7,98 Kconomy in coa! and water per year $2, There were, of course, other economies effected by elimi-nating the operation of one compressor and one boiler whichit has been difficult to capitalize in dollars and cents. No. 5. The third proposition deals with a situation wherea large steel car yard was experiencing serious trouble. Fig. 2—Ter Pressures Before and After Stoppingission Line Leaks from insufficient air pressure, which ranged onlv from 40to 60 lb. Investigation de\eloped that there were several hiid leaksin the air lines, etc., but the principal trouble was due toserious defects in the air compressor, necessitating extensiverepairs. After the various defects were remedied, themaximum pressure of 100 lb. was easily maintained andwith a slower speed of the compressor. The increased pres-sure was directly responsible for the immediate increase inproduction of five cars a day without any additional ex-pense to the railroad. It would be quite difficult to capitalize the real and entireeconomies effected by this increase in air pressure, but it isol)vious that it would greath- eclipse the savings set forthin the two previous cases where the principal economy wasderived from the savings in air consumption. No. 4. Great economy was effected in a shop at anotherpoint where low
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
