Popular science monthly . ect alsoappears in the finished picture. This ispossible because red and green combinedin different proportions by the processhere used will give such desired colors. How a Steamers Engine-Room Is Ventilated FRESH AIRDUCT- PHYSIOLOGISTS have shown in re-cent years that the chief effect ofventilation and open air treatment de-pends on the movement, temperatureand moisture of the air, and less upon itschemical properties than was this reason the cooling of overheatedengine-rooms, underground or underdeck,is best obtained, as engineers have dis-coNered, by f
Popular science monthly . ect alsoappears in the finished picture. This ispossible because red and green combinedin different proportions by the processhere used will give such desired colors. How a Steamers Engine-Room Is Ventilated FRESH AIRDUCT- PHYSIOLOGISTS have shown in re-cent years that the chief effect ofventilation and open air treatment de-pends on the movement, temperatureand moisture of the air, and less upon itschemical properties than was this reason the cooling of overheatedengine-rooms, underground or underdeck,is best obtained, as engineers have dis-coNered, by flood-ing them with freshair from outsideunder slight press-ure. This positiveventilation or acontinuous changeof air also removesa\\ noxious gasesanfl smells emanat-ing from the oil andbilges. The accompany-ing driiwing showsa transverse sec-tional view of theengine-room of theAquitania, withthe recommendedmethod for flood-ing the confinedspace with cool,fresh air undermoderate air is delivered OPEN MAINHATCH. ^m^ ENGINE ROOM A cross-seclion view of the Aquitania,showing ventilating arrangement into the engine-room by a large open fanplaced at the junction of the lower endsof the air-shafts, so that the full volumeof fresh air, equal in this instance toabout one hundred and fifty thousandcubic feet per minute, is propelled intoand properly distributed through the en-gine-room without desirable, the air in the engine-room may bechanged one hun-dred and twentytimes an hourwith-out uncomfortabledrafts. The cool airis drawn, not forc-ed, down from theujipcr deck anddelivered laterallyby open fans jilaccdlow down in theengine-room so asto Hood the wholespace with air, thecooler incoming airfalling towards thetliior, displacingthe heated air andexjielling it up themain hatcli. Manytransatlantic linershave the \enlilat-ing system illus-trated. STEAM TURBINE What Inventors Are Doini? for the Fisherman T R / ijGt. ^
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectscience, bookyear1872
