. Technical paper . 12 COMBUSTION OF COAL IN BOILER Before the general gas samples were taken the furnace was oper-ated at the assigned rate for about three hours in order to allow thetemperature of the combustion chamber to reach a condition ofequilibrium. The water-cooled gas samplers were then introducedinto the combustion chamber and 40 to 50 gas samples taken atvarious points in the furnace. The period of sampling was about 8minutes. The test was continued for about 30 minutes after the gas samples had been obtained in ordern, s to show whether the furnace con-s) ditions were f
. Technical paper . 12 COMBUSTION OF COAL IN BOILER Before the general gas samples were taken the furnace was oper-ated at the assigned rate for about three hours in order to allow thetemperature of the combustion chamber to reach a condition ofequilibrium. The water-cooled gas samplers were then introducedinto the combustion chamber and 40 to 50 gas samples taken atvarious points in the furnace. The period of sampling was about 8minutes. The test was continued for about 30 minutes after the gas samples had been obtained in ordern, s to show whether the furnace con-s) ditions were fluctuating. SAMPLING AND ANALYSIS OF FUR-NACE GASES. Great difficulties were encoun-tered in properly sampling the gasesin the combustion chamber becausethe composition of the gases atany instant varied throughout thefurnace both laterally and longi-tudinally, and, further, becausethe combustion onthe grate was neverM under complete con-J trol, so that the com-•5 position of the gases| at any point in the~ combustion cham-ber varied in re-sponse to the cha
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectminesandmineralresou
