They are used in single phase (liquid or vapour) but also in double phase (condensation and / or evaporation).Ī brazed plate-fin heat exchanger consists of stacked corrugated sheets (fins) of various geometries, separated from each other by flat plates and sealed along the edge with bars. Today, it is operated in a wide variety of gas purification or liquefaction processes, including air constituents, natural gas or other hydrocarbons. Thanks to its small size, this equipment was initially used in air separation and oxygen production applications. This heat exchanger technology, derived from the aeronautic industry, allows a large exchange surface with respect to volume and enables to reach small temperature pinch while ensuring simultaneous heat exchanges between several fluids. ProSec allows the user to accurately represent brazed plate-fins exchangers and to exploit simulation results for design, revamping as well as for existing plants process analysis.
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