Factory and industrial management . FIG. I. fffESH WATE/f INSTALLATION WITH ELECTRICALLY DRIVEN AUXILIARIES. In Figure i is shown the diagrammatic layout of the piping andapparatus of a plant whose auxiliary machinery is driven heaters are included in this sketch merely to show how theyare connected into the system when installed, but as has been previ-ously stated, their use under the most usual, circumstances is notfound necessary. Figure 2 illustrates also in diagrammatic form the layout of the Hi)0 rilli liSClNlLliUlNG MACAZINll feed system foi a plan
Factory and industrial management . FIG. I. fffESH WATE/f INSTALLATION WITH ELECTRICALLY DRIVEN AUXILIARIES. In Figure i is shown the diagrammatic layout of the piping andapparatus of a plant whose auxiliary machinery is driven heaters are included in this sketch merely to show how theyare connected into the system when installed, but as has been previ-ously stated, their use under the most usual, circumstances is notfound necessary. Figure 2 illustrates also in diagrammatic form the layout of the Hi)0 rilli liSClNlLliUlNG MACAZINll feed system foi a plant whose auxiliaries are steam-driven An openheater is shown in this diagram, hut if a closed heater were installed,the only differeiice in the layout would he that the closed heater wouldhe placed on the discharge side of the feed pumps instead of on thesuction side as shown. :/ti. ® 9Ar£ OR OLOBe /ffGUtAT/fWO VA/.y£: 0^. CO/VD£/V5ep WAT£rR rOAfPS. n^^ft K (^ ^/reSH WAT£/f SUf/LY. P/fOM COA/PENSER. FIG. 2. FEED-WATER INSTALLATION WITH STEAM-DRIVEN AUXILIARIES. In plants running non-condensing, the exhausts from the mainengines are much more than sufficient to heat the feed water to 210degrees F. so that no secondary heaters are necessary. These pri-mary heaters, as they may be called in this case, may be either of theopen or closed type as in a condensing plant. The motive power forthe auxiliaries to give best results will generally be electric motorsas there is no use for the exhaust steam. In case, however, steam-driven auxiliaries are installed, it will be found advisable, under mostcircumstances, to put in the most economical types as the exhauststeam from them will go to waste. After the final layout of the system has been settled, then comesthe determination of the sizes of the pumps, heaters, and heaters are generally bought on a guarantee by the manufac-turers to raise the temper
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Keywords: ., bookcentury1800, bookdecade1890, booksubj, booksubjectengineering
