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John Handsley Dales
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17,984. Dales, J. H. Aug. 4. Feed-water, heating.-In a direct-contact steam feedwater-heater, full-pressure steam is employed so that the water is delivered at boiler temperature. The water is sprayed at b into the chamber c, the steam entering through the pipe c'. A de-aerating chamber c<2>, with a blow-off valve d, and a filter e, divided into cells e<1>, with a delivery pipe g, are provided in the lower part of the apparatus. A pipe h and a valve h' are fitted to inject high-pressure water in order to cleanse the filter by washing impurities out of the pipe j.
GB190917984D1909-08-041909-08-04Improvements in Heater-filtering and Deaerating Apparatus for the Feed Water of Steam Boilers and similar purposes.
ExpiredGB190917984A
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