. The principles of chemistry . btained from those kinds of fuel whichunder ordinary conditions burn without flame : for instance, anthracite,coke, charcoal. Heating by meansof a gas-producer —that is, anapparatus producing combustiblecarbonic oxide from fuel—iscarried on in the same manner.*In transforming one part of char- - In gas-producers all carbonaceousfuels are transformed into inflammablegas. In those wliicli (on account of theirslight density and large amount of water,or incombustible admixtures which ab-sorb heat) are not as capable of giving ahigh temperature in ordinary furnaces—f
. The principles of chemistry . btained from those kinds of fuel whichunder ordinary conditions burn without flame : for instance, anthracite,coke, charcoal. Heating by meansof a gas-producer —that is, anapparatus producing combustiblecarbonic oxide from fuel—iscarried on in the same manner.*In transforming one part of char- - In gas-producers all carbonaceousfuels are transformed into inflammablegas. In those wliicli (on account of theirslight density and large amount of water,or incombustible admixtures which ab-sorb heat) are not as capable of giving ahigh temperature in ordinary furnaces—for instance, fir cones, peat, the lowerkinds of coal, &c.—the same gas is ob-tained as with the best kinds of coal,because the water condenses on cooling,and the ashes and earthy matter remainin the -gas-producer. The constructionof a gas-producer is seen from the ac-companying drawing. The fuel lies onthe fire-bars O, the air enters throughthem and the ash-hole (drawn by thedraught of the chimney of the stove where. Pui. 03.—Gas-proilucer for the furmatioii of carbouuiouoxide for heating purposes. the gas burns, or else forced by a blowing apparatus), the quantity of air being exactlyregulated by means of valves. The gasas formed are then led by the tube V, provided 398 PEI>CIPLES OF CHEMISTRY coal into carbonic oxide 2,420 heat units are given out, and on burning tocarbonic anhydride 8,080 heat units. It is evident that on transformingthe charcoal first into carbonic oxide we obtain a gas which in burning-is capable of giving out 5,660 heat units for one part of charcoal. Thispreparatory transformation of fuel into carbonic oxide, or producergas containing a mixture of carbonic oxide (about ^ by volume) andnitrogen (| volume), in many cases presents most important advantages,as it is easy to completely burn gaseous fue] without an excess of air,wliich would lower the ^ In stoves where solid fuel isburnt it is impossible to effect the complete combust
Size: 1318px × 1895px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublis, booksubjectchemistry
