The finned heat exchange surface contains internal channels with a flat-oval cross-sectional shape, on the outer surfaces of which there are plate-like transverse rectangular fins. The internal channels are formed by cylindrical steel bases, and the fins are placed on the flat parts of the outer surface of these bases, and their lengths exceed the lengths of the flat sections of the bases in cross section.
The utility model belongs to the power industry and can be used in the development of heat exchangers for petrochemical, refrigeration, energy, heat and utilities and other industries.
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