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John Deam
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Control Of Steam Boilers And Waste-Gas Boilers
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Abstract
2 3 , 5 4 1. D e a m, J. April 22, 1908. Evaporative efficiency, increasing ; superheaters, steam.- The evaporative efficiency of a boiler is increased by passing live or exhaust steam previously superheated in a series of depending looped tubes 8 placed at the rear of the furnace through a number of small tubes 14 traversing the water space. A second superheater may be provided to dry the live steam after passing through the boiler preparatory to its use in the engine. The superheater may be cut out of connexion with the steam-pipe 9 by means of valves 11, 12, thus allowing the steam to pass directly to the engine or condenser. In the marine boiler shown in Fig. 1, the superheater is arranged in a specially provided second combustion chamber 2, to which the furnace gases have access through stay-tubes 5. The process of superheating the steam and passing it through the water space may be repeated several times.
GB190723541D1908-04-221908-04-22Improvements in Boilers or Steam Generators.
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