摘要:
A high effectiveness compact heat exchanger having internal passageways containing substantially transverse foraminous elements of high heat conductivity includes heat-flowed passageway walls of synthetic material that are interspersed into the interstices of the foraminous elements. Metal screens of fine mesh are contiguously stacked to provide transverse heat conduction relative to longitudinal flow paths. Internal plastic barriers transverse to and at least partially penetrating the screens define composite passageway walls providing leak free construction capable of sustaining substantial pressure differentials between adjacent passageways. The passageways are varied in cross-sectional area along their lengths, as by incremental displacements of successive barriers, to provide flow equalization for maximum efficiency.
摘要:
Heat-exchange tubing with a peripheral wall of oblong crosssection, and inner fins on the wall of which the fins on either of two opposite flat wall sections extend with their tips at least to the level of the tips of the fins on the other flat wall section, and a method of forming the tubing from a round innerfin tube blank, involving partially flattening the round blank into the tubing with its peripheral wall of oblong crosssection.