Article
Article
Surface condenser
Article By:
Sebald, Joseph F. Heat Power Products Corporation, Bloomfield, New Jersey.
Last reviewed:January 2020
DOI:https://doi.org/10.1036/1097-8542.670900
A heat-transfer device used to condense a vapor, usually steam, by absorbing its latent heat in a cooling fluid, ordinarily water. Most surface condensers consist of a chamber containing a large number of 0.5–1-in.-diameter (1.25–2.5-cm) corrosion-resisting alloy tubes through which cooling water flows. The vapor contacts the outside surface of the tubes and is condensed on them. The tubes are arranged so that the cooling water passes through the vapor space one or more times. About 90% of the surface is used for condensing vapor and the remaining 10% for cooling noncondensable gases. Air coolers are normally an integral part of the condenser but may be separate and external to it. The condensate is removed by a condensate pump and the noncondensables by a vacuum pump. See also: Heat transfer; Steam condenser; Vapor condenser
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