Mirror symmetry concave-convex wing type fin type PCHE flow channel

Abstract

The invention discloses a mirror symmetry concave-convex wing type fin type PCHE flow channel. The core lies in design and arrangement of concave-convex wing type fin unit bodies. The efficient heat exchange runner is suitable for heat exchange of gaseous fluid or supercritical fluid, and a PCHE heat exchange core is formed by stacking a plurality of runners. And the heat exchange capacity is obviously improved on the premise of low pressure loss. The PCHE flow channel structurally comprises a concave-convex wing type fin unit body, a heat exchange plate and a frame. The profile parameter design of the wing-shaped fins refers to the concave-convex wing-shaped molded line design, adjacent rows are in mirror symmetry, a plurality of rows of runners are copied and formed at certain intervals in the transverse direction and the longitudinal direction, the runners are arranged on a heat exchange plate, inlet and outlet spaces are reserved, and PCHE single-layer runners are obtained. Compared with a traditional Z-shaped flow channel and a traditional wing-shaped fin type flow channel, vortex is weakened and friction is reduced through streamline design in the design process, and heat exchange is enhanced by destroying a boundary layer and increasing turbulent flow. Compared with a traditional airfoil profile design, the airfoil profile has the characteristics that the pressure loss increment is small, the weight is light, and the comprehensive heat exchange performance is remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency compact heat exchanger PCHE, and relates to a discontinuous airfoil-shaped fin flow passage suitable for the circulation of supercritical fluid and general fluid in the PCHE, in particular to a mirror-symmetric concave-convex airfoil-fin flow channel PCHE runner. Background technique [0002] Heat exchangers are important components for energy recovery in modern industry. Heat exchanger optimization by compacting dimensions and increasing the heat transfer area is the key to reducing industrial costs. The printed circuit heat exchanger (PCHE), which has developed rapidly in recent years, is considered to be the first choice for efficient heat transfer under high pressure and confined space due to its compactness, high efficiency, safety and reliability. It is used in liquefied natural gas, aerospace, chemical processing, nuclear power and solar energy There are a wide range of applicatio...

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Problems solved by technology

[0005] In order to overcome the above-mentioned shortcomings of poor heat transfer performance of the traditional airfoil finned flow channel, the purpose of the present invention is to propose a mirror-symmetric concave-convex airfoil finned PCHE flow channel, which can be realized in comparison with the traditional airfoil Under the premise that the increase in resistance loss is as small as possible, the function of effectively improving the heat transfer capacity by increasing the turbulence and promoting the longitudinal mixing of the fluid

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