FIELD: heating.
SUBSTANCE: invention is related to heat exchanging devices that are inbuilt into pipelines, and may be used in any heat exchanging processes. Heat exchanger that includes cylindrical casing with internal bundle of tubes, which are fixed with tubular transverse grids, so that closed internal chamber is formed by tube grids and casing, is arranged with bundle of tubes that are extended behind the grid opposite to direction of entry flow, and additional tube grid is installed at the end of extension, at that newly formed air-tight chamber is connected with at least one separate pipeline to outlet part of heat exchanger casing behind the tube grid, and in wall of at least one tube at the section of bundle extension at least one opening is provided. Suggested solution due to energy of jets realises vacuum-suction in closed internal chamber and return-recirculation of part of flow, which makes it possible to additionally increase during heating or reduce during cooling the outlet temperature of common flow.
EFFECT: provides possibility to additionally increase during heating or reduce during cooling the outlet temperature of common flow.
5 cl, 5 dwg
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