Method for Determining Mechanical Parameters of Plate-fin Heat Exchanger and Its Application Design Method

A technology of plate-fin heat exchangers and fin heat exchangers, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems of plate-fin heat exchanger finite element simulation, complex and cumbersome methods, and difficult to use

Active Publication Date: 2017-09-29
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

However, due to the periodic and complex structure of the plate-fin heat exchanger, it is difficult to perform finite element simulation of the plate-fin heat exchanger. Using finite element analysis software to design the high-temperature strength of plate-fin heat exchangers has seriously affected the development of plate-fin heat exchangers

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  • Method for Determining Mechanical Parameters of Plate-fin Heat Exchanger and Its Application Design Method
  • Method for Determining Mechanical Parameters of Plate-fin Heat Exchanger and Its Application Design Method
  • Method for Determining Mechanical Parameters of Plate-fin Heat Exchanger and Its Application Design Method

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Embodiment Construction

[0076] Figure 1~3 It is the best embodiment of the present invention, below in conjunction with attached Figure 1~3 The present invention will be further described.

[0077] Such as Figure 1~2 As shown: the core of the plate-fin heat exchanger includes a plate 1 and a fin 2, and a fin 2 is provided between each two adjacent plates 1. Thus, a plurality of flow channels 3 are formed between every two adjacent plates 1 , and the cross-section of the flow channels 3 is isosceles trapezoidal.

[0078] The plate 1 and fin 2 of the core of the plate-fin heat exchanger are brazed and have a compact structure. Unlike conventional homogeneous materials, the core of the plate-fin heat exchanger has the characteristics of a periodic porous structure. Due to the periodicity and complexity of the core structure of the heat exchanger, it is difficult to conduct finite element analysis directly, and it is necessary to use the equivalent homogenization method for finite element analysis....

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Abstract

A method for determining the mechanical parameters of a plate-fin heat exchanger and an application design method thereof belong to the technical field of heat exchangers. It is characterized in that it includes the following steps: step a, divide the plate-fin structure into multiple plate-fin cells with the same shape; step b, equivalent the plate-fin cells into uniform solid plates; step c, obtain the plate-fin cells The equivalent mechanical parameters of the whole plate-fin heat exchanger core are obtained. The method for determining the mechanical parameters of the plate-fin heat exchanger solves the problem in the prior art that the equivalent mechanical parameters can only be obtained through experiments or finite element simulation, and the process is complex and cumbersome. The results of this calculation method can be used in the high-temperature strength design of plate-fin heat exchangers, which simplifies the design process; the application design method of plate-fin heat exchangers can The effective life prediction of the heat exchanger provides an effective method for the high-temperature strength design of the plate-fin heat exchanger.

Description

technical field [0001] A method for determining the mechanical parameters of a plate-fin heat exchanger and an application design method thereof belong to the technical field of heat exchangers. Background technique [0002] With the development of science and technology, more and more energy is consumed, so energy conservation and emission reduction and improvement of energy utilization have become the focus of attention. Heat exchange equipment, as a core member of the high-temperature system, not only requires efficient heat exchange performance, but also requires a compact structure. However, most of the existing heat exchange equipment are shell-and-tube heat exchangers, which occupy a large volume and have low heat exchange efficiency, making it difficult to meet the requirements in the fields of aerospace, high-temperature gas-cooled reactors, and gas turbines. The plate-fin heat exchanger has the characteristics of compact structure and high heat exchange efficiency...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/00
CPCG01N3/00G01N2203/0071G01N2203/0073
Inventor 蒋文春葛磊张玉财巩建鸣涂善东谭菊妮
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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