. The railroad and engineering journal . THE CRINER FIRE-BOX. gases are obliged to pass around these obstacles in theirway. There is, then, a sharp agitation which bringsrapidly in contact all the elements which can combine ata very high temperature, in such a way that combustionis hastened, and will end before the point of extinction isreached. These columns being in the hottest part of thefire are carried to a red heat, and then serve by their own. temperature to light the gases which have become cooledin their passage from the fire-box, when fresh coal isthrown upon the grate. Moreover, bec
. The railroad and engineering journal . THE CRINER FIRE-BOX. gases are obliged to pass around these obstacles in theirway. There is, then, a sharp agitation which bringsrapidly in contact all the elements which can combine ata very high temperature, in such a way that combustionis hastened, and will end before the point of extinction isreached. These columns being in the hottest part of thefire are carried to a red heat, and then serve by their own. temperature to light the gases which have become cooledin their passage from the fire-box, when fresh coal isthrown upon the grate. Moreover, becoming heated bytheir contact with the currents of burning gases, they willgive out by radiation a portion of this heat to the boilerunder which they are placed. It will be seen that, thanksto the air distributor, which permits us to give all the airrequired at the moment when the coal is distilled, we canhave less air in excess during the period which followsthe distillation, either by partially closing the register orby increasing the thickness of the layer of coal. One point which is somewhat surprising at first sight isan increase in power which this system gives to boilers,and this has brought it into much favor even among 2. The columns or bars act by taking up a portion ofthe heat of the gases, which they radiate to the boiler. 3. Combustion with less excess of air permits us to burnmore carbon with the same total quantity of air intro-
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectrailroa, bookyear1887
