Marine Engineer . The Burmeister and Wain-Harland & Woll 1, Long-stroke Diesel Engine, built by John & Co. Ltd., Greenock, for the Arantza Mendi. (Sn j^kji •1H\.) June, 1923. THE MARINE ENGINEER AND NAVAL ARCHITECT. 231 THE CLOSED FEED SYSTEM. Removal of the Condensate from Condenser and Discharge to Boilers without exposure to Atmosphere. A closed feed system enables the condensate to be removedfrom the condenser and discharged to the boilers by rotary pumpswithout exposure to the atmosphere. Although there is a certainamount of doubt in the minds of marine engineers as to
Marine Engineer . The Burmeister and Wain-Harland & Woll 1, Long-stroke Diesel Engine, built by John & Co. Ltd., Greenock, for the Arantza Mendi. (Sn j^kji •1H\.) June, 1923. THE MARINE ENGINEER AND NAVAL ARCHITECT. 231 THE CLOSED FEED SYSTEM. Removal of the Condensate from Condenser and Discharge to Boilers without exposure to Atmosphere. A closed feed system enables the condensate to be removedfrom the condenser and discharged to the boilers by rotary pumpswithout exposure to the atmosphere. Although there is a certainamount of doubt in the minds of marine engineers as to thedesirability of installing small turbine-driven rotary pumpson steamships, the makers of the closed feed apparatus describedbelow ofier to shipbuilders desiring to adopt this method ofboiler feeding a compact and satisfactory arrangement. One. Fig. 1.—The Contraflo Closed Feed The air ejector thus forms a small auxiliary heater, theheat in the steam used in the jets being absorbed by thefeed water. Exhaust steam from the engine room auxiliariespasses into the main feed heater, where it gives up its heat tothe feed water, the drainage being led by the way of pipe Einto the air ejector, in which the greater portion of the heatin the drainage water is absorbed by the feed water. Thedrainage from the air ejector passes through the filter into the feed tank. In Fig. 1, water from the feed tank, and make-upwater from the reserve tank, isdrawn through the pipe F into themain condenser, so that such wateris deserated in the condenser andis afterwards removed, togetherwith the main condensate, by theextraction pump, which deUversinto the feed system in the mannerpreviously described. Any excessof water in the feed system passesthrough the relief valve into thefeed tank. There is proxdded anautomatic by-pass val
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Keywords: ., bookcentury1900, bookdecade1900, bookpublisherlondon, bookyear190
