TUBULAR HEAT EXCHANGER Russian patent published in 2011 - IPC F28D7/00 

FIELD: machine building.

SUBSTANCE: tubular heat exchanger consists of crosswise streamed bundle of profiled pipes in form of two similar conjugated pipes of opposite directed conic profile with different external end diametres, bigger and smaller, and of collectors with pipe plates. At linear (corridor) scheme front and back parts with circular elements of different diametres of their profiled pipes are correspondingly alternated in lengthwise and crosswise rows of the bundle on its each half; at triangle (checkerboard) scheme pipes in the bundle are arranged opposite to a stream, when their front part changes diametre from bigger to smaller or from smaller to bigger diametre along length. In each version of the scheme tube space of the bundle corresponds to lengthwise convergent-divergent channels of alternate cross section of complex geometry.

EFFECT: raised efficiency of pipe surface heat transfer, reduced specific quantity of metal and reduced volume of heat exchanger.

5 dwg