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Mechanical parameter calculation method and application design method of plate-fin heat exchanger

A technology of plate-fin heat exchangers and mechanical parameters, which is applied in the direction of instruments, scientific instruments, measuring devices, etc., can solve the problems affecting the development of plate-fin heat exchangers, difficult to use, complicated and cumbersome methods, etc.

Active Publication Date: 2017-01-18
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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  • Mechanical parameter calculation method and application design method of plate-fin heat exchanger
  • Mechanical parameter calculation method and application design method of plate-fin heat exchanger
  • Mechanical parameter calculation method and application design method of plate-fin heat exchanger

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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

The invention provides a mechanical parameter calculation method and an application design method of a plate-fin heat exchanger and belongs to the technical field of heat exchangers. The mechanical parameter calculation method is characterized by comprising the steps that (a) a plate-fin structure is divided into multiple plate-fin cells identical in shape; (b) the plate-fin cells are equivalent to be uniform solid-state plates; (c) equivalent mechanical parameters of the plate-fin cells are obtained, and accordingly the equivalent mechanical parameters of a whole plate-fin heat exchanger core are obtained. By the adoption of the mechanical parameter calculation method of the plate-fin heat exchanger, the problem that in the prior art, the equivalent mechanical parameters can be obtained only through experiments or finite element modelling and the process is complicated and cumbersome is solved. The results of the calculation method can be used for high-temperature strength design of the calculation method, and the design process is simplified. The application design method of the plate-fin heat exchanger can be used for performing effective service life prediction on the plate-fin heat exchanger on active service under the high temperature and alternating load, and an effective method is provided for the high-temperature strength design of the plate-fin heat exchanger.

Description

technical field [0001] A mechanical parameter calculation method and an application design method of a plate-fin heat exchanger 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, and the researc...

Claims

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Application Information

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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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