. Electric railway journal . ce 1 to Date of test 11/23/20 Duration of test, hours 12 Steam pressure, gage 148 Temperature of feed water entering boiler, deg. F Temperature of escaping gases leaving boiler, deg. F 447 Temperature side walls of combustion chamber, deg. F 2,400 Moisture in coal as fired, per cent 0 .87 Total weight of dry coal 25,987 Percentage of ash in pulverized coal Total combustible fired 21,304 Total water evaporated. 182,217 Factor of evaporation Total equivalent evaporation 221,941 Dry coal fired per hour 2, Dry coal burned per hour, per
. Electric railway journal . ce 1 to Date of test 11/23/20 Duration of test, hours 12 Steam pressure, gage 148 Temperature of feed water entering boiler, deg. F Temperature of escaping gases leaving boiler, deg. F 447 Temperature side walls of combustion chamber, deg. F 2,400 Moisture in coal as fired, per cent 0 .87 Total weight of dry coal 25,987 Percentage of ash in pulverized coal Total combustible fired 21,304 Total water evaporated. 182,217 Factor of evaporation Total equivalent evaporation 221,941 Dry coal fired per hour 2, Dry coal burned per hour, per of furnace vol-ume, lb Equivalent evaporation per hour from and at 212 deg. F., lb 18,495 Per cent of rated capacity developed 143 Calorific value of 1 lb. of dry coal 12,029 Calorifio value of 1 lb. combustible ; 14,630 Per cent efficiency of boiler and furnace 69 RevisedInstallationB. &. 143,917 1 to ,,,150168,270 I. 185199,400 2,595 19,940154 II, 99014,720 Boiler-Rating Schedule Chart could be materially reduced in size, which is a desirableadvantage in the application of pulverized coal to oldinstallations. In rebuilding the combustion chamber, a change wasmade in the location of the burners so as to allow forthe construction of an ignition chamber to be builtaround the burner nozzles as they enter the of the burners entering the top of the furnaceas in the original designs, they were installed as nearthe bottom as practical. With these changes further tests were conducted, theconclusion of which indicated that as good or betterresults were obtained with the original equipment withthe exception of the combustible in the ash. By addingan ignition chamber to the original design, placing theburners in the lower portion of the furnace and main-taining the volume of the combustion chamber as firstinstalled it is believed that the complete burning of thecombustible in the fuel can be accomplished, wit
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