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Trapezoidal plate-fin heat exchanger provided with stabs

A trapezoidal, stabbed technology, applied in indirect heat exchangers, heat exchanger types, lighting and heating equipment, etc., can solve the problems of complex condensation heat exchange process and mechanism, complex heat exchange situation, and reduction of average liquid film, etc. Achieve the effect of manufacturing difficulty and cost increase, easy realization, and improved heat exchange efficiency

Active Publication Date: 2015-12-23
SHANDONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing studies on condensation heat transfer of non-azeotropic mixed media focus more on the working conditions containing a non-condensable gas, and adopt measures such as low grooves and artificial roughness surfaces to reduce the average liquid film thickness when pure components condense Measures that have been proven to be effective are sometimes ineffective in the presence of noncondensable gases
, while the condensation heat transfer process and mechanism in the natural gas liquefaction and petroleum cracking industries are more complicated, the condensation process usually contains more than two kinds of non-condensable gases, and the heat transfer situation is more complicated

Method used

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  • Trapezoidal plate-fin heat exchanger provided with stabs
  • Trapezoidal plate-fin heat exchanger provided with stabs
  • Trapezoidal plate-fin heat exchanger provided with stabs

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Embodiment Construction

[0052] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0053] In this article, if there are no special instructions, when it comes to formulas, " / " means division, and "×" and "*" mean multiplication.

[0054] Such as figure 1 As shown, a plate-fin heat exchanger for the condensation of non-azeotropic multi-component mixtures. The plate-fin heat exchanger includes plates 3 parallel to each other, and the adjacent plates 3 are formed between For the fluid channel 2, fins 7 are arranged between the adjacent plates 3. The fin 7 includes an inclined portion 4 that is inclined and the plate 3, and the spurs 6 are processed by punching on the inclined portion 4, so that the fluid on both sides of the inclined portion 4 is connected through holes formed by punching on the inclined portion 4; The spur 6 extends outward from the inclined portion 4.

[0055] The fin is a trapezoidal fin, and the trapezoidal fi...

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Abstract

The invention relates to a trapezoidal plate-fin heat exchanger provided with stabs. Fins used for condensation of a non-azeotropic multicomponent mixture are provided. The fins are trapezoid fins and comprise inclined parts inclining towards plates. The inclined parts form two waists of the trapezoid, and the stabs are stamped on the inclined parts, so that fluids on the two sides of each inclined part are communicated through holes stamped in the inclined part. The stabs extend outwards in the flow direction of the mixture from the inclined parts. The novel plate fins suitable for condensation of the non-azeotropic multicomponent mixture are provided, so that condensation of multicomponent mixed media with different boiling points is achieved, heat exchange efficiency is improved, and flow resistance of the fluids is lowered.

Description

Technical field [0001] The invention belongs to the field of heat exchangers, in particular to a heat exchanger used for condensation of mixed media with different boiling points, and belongs to the field of heat exchangers of F28D. Background technique [0002] The condensation of mixed media with different boiling points is natural gas liquefaction (the main components are methane with boiling point -162℃, ethane with boiling point -88℃, propane with boiling point -42℃, etc.), air separation, mixed refrigerant refrigeration, petroleum or waste plastic cracking, biomass The main process of gas production and other industries. To reduce the process This type of production process hopes to gradually cool and precipitate components with different boiling points according to the temperature level. The same refrigerant or product also exchanges heat in different temperature ranges. Therefore, the condensing equipment is required to facilitate the simultaneous heat exchange of multip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D9/02
Inventor 冷学礼张冠敏师艳平范明秀柏超邱燕
Owner SHANDONG UNIV
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