. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. ng independently of the superheater. A safety-valve is also fitted and a gauge glass; the lat-ter is to show whether the superheater is clear of water,as priming will sometimes fill it up. The special fittings of the marine boiler will be moreparticularly described hereafter as well as the stays, rivet-ing, strength, etc., etc. Maxims and Instructions. «3 reE MABINE BOILER. The use of the garface condenser in connection <dth themarine boiler was an immense step toward incr
. American stationary engineering; a practical work which begins at the boiler room and takes in the whole power plant. ng independently of the superheater. A safety-valve is also fitted and a gauge glass; the lat-ter is to show whether the superheater is clear of water,as priming will sometimes fill it up. The special fittings of the marine boiler will be moreparticularly described hereafter as well as the stays, rivet-ing, strength, etc., etc. Maxims and Instructions. «3 reE MABINE BOILER. The use of the garface condenser in connection <dth themarine boiler was an immense step toward increasing its effi-ciency. In 1840 the average pressure used in marine boiJerswas only 7 or 8 lbs. to the square inch, the steam being madewith the two-flue pattern of boiler, sea water being used forfeed; as the steam pressure increased as now to 150 to 200 the square inch, greater and greater difficulty was experi-enced from salt incrustation—in many cases the tubes did notlast long and frequently gave much trouble, until the introduction of the surface condenser, which supplied fresh waterto the hJu /Ump Fig. 25 The StjRFACE Condenser. The cundenser is an oblong or circular box of cast iron fittedin one of two ways, either with the tubes horizontal or vertical;at each end are fixed the tube plates, generally made of brass,and the tubes pass through the plates as well as through asupporting plate in the middle of the condenser. Each endof the condenser is fitted with doors for the purpose of enablingthe tube ends to be examined, drawn, or packed, as may benecessary. The tube ends are packed in various ways, andthe tubes are made of brass, so as to resist the action of thewater. The water is generally sucked through the tubes by 66 Maxims and Instructions, THE CONDENSER. the circulating pump, and the steam i^ condensed by comingin contact with the external surface of the tubes. In somecases the water is applied to the external surface, and thesteam exhausted t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsteamen, bookyear1917
