Chaos fin and plate-fin heat exchanger comprising the same

A finned and chaotic technology, applied in the field of heat exchange equipment, can solve the problems of low laminar heat transfer heat transfer efficiency, large turbulent heat transfer and pressure drop, and achieve the effects of simple processing, small flow dead zone, and favorable welding.

Inactive Publication Date: 2007-05-16
ZHENGZHOU UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a chaotic fin of a plate-fin heat exchanger using a chaotic heat exchange method for heat exchange in view of the low heat transfer efficiency of laminar heat transfer and the large pressure drop of turbulent heat transfer. And the plate-fin heat exchanger composed of these fins

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  • Chaos fin and plate-fin heat exchanger comprising the same
  • Chaos fin and plate-fin heat exchanger comprising the same
  • Chaos fin and plate-fin heat exchanger comprising the same

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing, the present invention will be further described:

[0021] As shown in Fig. 1, Fig. 2 and Fig. 3, the chaotic fin shown in Fig. 1 is formed by crimping five fin units horizontally. Three units consist of a DC section 1, a twisted DC section 3 and a transition section 2. The front view, left side view, top view and three-dimensional schematic diagram of each unit's DC section 1, twisted DC section 3 and transition section 2 are shown in Figure 3 (A , B, C, D), the adjacent straight section 1 of any unit has the same geometric shape as the twisted straight section 3, and is axisymmetric around the axis perpendicular to the bottom surface of the center of the transition section 2, thus ensuring that the fluid flow in the section The two-dimensional variation on , and has the distortion variation of the third axis. According to the dynamic principle of chaos generation, the fluid in the flow channel is guaranteed to generate c...

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Abstract

The chaotic fin tube comprises a fin tube unit which is made of several units of direct current phase, transitional phase and twisted direct current phase, with same geometrical appearance of the direct current phase and the twisted direct current phase within each unit, axially symmetrical rounding the transitional phase center perpendicular to the bottom. The cross section of the direct current phase and the twisted direct current phase takes on geometrical shapes, which ensures the two dimensional change on the cross section and the twisted change along the third shaft of the liquid. The plate-fin heat exchanger comprises seals, clapboard, and chaotic fins made by multi fins longitudinally and horizontally connected. Ingenious in design, simple in processing, it exchanges heat based on chaotic principle, having better effect than that of the laminar flow and lower pressure drop compared with onflow. Liquids have better status than the current flow channel, with less dead corner, fine mixing efficiency and greatly reducing the opportunity of flow channel block.

Description

Technical field: [0001] The invention relates to heat exchange equipment, in particular to a chaotic fin which utilizes the principle of chaos to enhance heat transfer for heat exchange and a heat exchanger comprising the fin. Background technique: [0002] Plate-fin heat exchanger is a compact high-efficiency heat exchanger. It has the characteristics of compact structure, light weight and high heat transfer efficiency. It is widely used in petrochemical, air separation, cryogenic engineering, ships, vehicles and atomic energy industries. . Although the plate-fin heat exchanger has many outstanding advantages, with the development of technology and the continuous improvement of use requirements, there are still many problems: due to the narrow flow channel, the flow is laminar flow under many working conditions, which reduces the Heat transfer efficiency; narrow flow channels can easily cause blockage, etc.; although there are some "wide-gap" flow channel designs (also kno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F3/04F28F13/12
CPCH01L23/3672
Inventor 董其伍刘敏珊孔松涛
Owner ZHENGZHOU UNIV
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