Compressed air . essedin the tank P to about 2 pounds and by gallons of water per day it equals 25fillings or the displacement of 3,325 cubic feetof free air compressed to about 50 poundspressure per square inch deducting necessarylosses. This air is drawn out of the tank P,through a reducing valve H, under the desiredpressure. 4146 COMPRESSED AIR. MUNICIPAL PUMPING PLANTAT DES PLAINES, ILL. J. Francis Small, in Miinicifal Engineering,describes an interesting air lift plant for mu-nicipal water supply. This plant, owing tolocal conditions, made a departure from gener-al practice as
Compressed air . essedin the tank P to about 2 pounds and by gallons of water per day it equals 25fillings or the displacement of 3,325 cubic feetof free air compressed to about 50 poundspressure per square inch deducting necessarylosses. This air is drawn out of the tank P,through a reducing valve H, under the desiredpressure. 4146 COMPRESSED AIR. MUNICIPAL PUMPING PLANTAT DES PLAINES, ILL. J. Francis Small, in Miinicifal Engineering,describes an interesting air lift plant for mu-nicipal water supply. This plant, owing tolocal conditions, made a departure from gener-al practice as it was necessary to insure againstany interruption in its operation throughoutthe four seasons. phere and get rid of it as rapidly as possibleafter it has performed its duty in lifting waterfrom the well. Where long pipe-runs from wells into acommon reservoir are necessary a smallerreservoir or receiving tank is usually pro-vided at each well, into which the water fromthe well is discharged, and from this tank a. From the profile drawing it will be observedthat the reservoir and power house are builttogether, the walls of the reservoir formingthe foundation on which the walls of the powerhouse are placed. It will be further noted that the reservoirand power house are built on a higher eleva-tion than the level on which the three wellssupplying the water are drilled, and that thesewells are separated from the power house bythe Des Plaines river. £3 ^ATER Pl-T. TESTING WELL XO. I. conductor pipe is run to the main reservoir. The illustration herewith will give a clearidea of this system. On account of the reservoir at Des Plainesbeing higher than the wells, it became evidentthat the discharge pipe at each well would re-
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectcompres, bookyear1896
