Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate

A plate-fin heat exchanger and fluid distribution technology, applied in the direction of heat exchanger shell, heat exchange equipment, lighting and heating equipment, etc. efficiency and other issues to achieve the effect of eliminating poor heat transfer, reducing operation and maintenance costs, and improving heat transfer performance

Inactive Publication Date: 2003-07-23
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The study of plate-fin heat exchangers found that the inlet structure has the greatest impact on the unevenness of material flow distribution. Due to the difference in the structure of the head and the flow arrangement of the heat exchanger, the influence of the unevenness of material flow distribution on its overall performance is different. , which can lead to a 7% drop in the overall efficiency of the counter-flow heat exchanger and condenser; while the effect on the efficiency of the cross-flow heat exchanger is as high as 25%
In order to compensate for the decline in heat exchang

Method used

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  • Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate
  • Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate
  • Fluid distribution end plate of aliform plank type heat exchanger and flow deflector connected end plate

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] See attached picture. According to the technical solution of the present invention, the fluid distribution head of the plate-fin heat exchanger is still according to the traditional basic type head " "Type structure design, which includes a fluid inlet section 1 and an arc-shaped head connection section 2; an outer arc 3 is added between the fluid inlet section 1 and the head connection section 2 as a secondary head, and the head A plurality of through holes are distributed on the connecting section 2 .

[0031] There are 5 to 7 through holes distributed on the head connection section 2 .

[0032] The ratio of the equivalent sectional diameter of the outlet of the secondary head to the equivalent sectional diameter of the outlet of the primary head is equal to the ratio of the diameter of the inlet pipe to the equivalent sectional di...

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Abstract

This invention discloses a heat-exchange fluid allocation headplate and inducer connecting to it which includes a fluid inlet section and an arc head plate connecting section, adding an arc connectoror an isolation board as the secondary head plate in between, many through holes are distributed on the isolation board. The induced angle of the inducer is set to be 45 deg. diameter of hole on it is 2 mm. A liquid adding cavity is designed at the edge the ratio of its width to that of the head plate opener is 0.2. It's the first time to put out the concept of two times of head plate and introduce structure of unniformly slotted orifice plate. This invented inducer structure reduces flow rate of maximum and minimum on unit internal channel vertical direction to 2-5 times from 3-7.

Description

1. Technical field [0001] The invention belongs to the technical field of material flow distribution, heat transfer enhancement and performance optimization of a plate-fin heat exchanger, and relates to a fluid distribution head of a plate-fin heat exchanger and a guide plate connected to the head. 2. Background technology [0002] Plate-fin heat exchanger is the key equipment in the thermal process. Due to its high efficiency and compactness, it is widely used in the fields of energy, petroleum, chemical industry, metallurgy, aviation and aerospace. In the design process of the plate-fin heat exchanger, it is assumed that the heat exchange fluid is evenly distributed in the heat exchanger. There are multiple equivalent diameter changes in the process of deflectors and heat exchangers, and it is impossible to achieve uniform distribution of fluid inside the heat exchanger. Even if the incoming flow from the main pipe is evenly distributed, due to channel processing errors a...

Claims

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Application Information

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IPC IPC(8): F28F9/02F28F9/22
Inventor 厉彦忠张哲许菁焦安军
Owner XI AN JIAOTONG UNIV
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