FIELD: power industry.
SUBSTANCE: invention includes shell made of two concentrically located cylinders between which there located are heat exchange tubes with cross section of trapezoidal shape. Tubes are fixed in grids with location of tube ends along the radius of internal cylinder made in the form of detachable sleeve. Shell is equipped with inlet and outlet headers for in-tube medium and inlet and outlet connection pipes and headers for inter-tube medium.
EFFECT: improved operating conditions and maintenance conditions without decreasing heat exchange efficiency.
3 dwg
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