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Flat-plate heat exchanger filled with metal foam at partial portion

A technology of filling metal and metal foam sheets, which is applied in the direction of regenerative heat exchangers, heat exchanger types, indirect heat exchangers, etc., can solve the problems of large pressure drop and low heat exchange performance in heat exchange channels, and achieve high Effect of specific surface area and high thermal conductivity

Active Publication Date: 2015-05-13
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of low heat exchange performance and large pressure drop in the heat exchange channel in the existing flat heat exchanger, the present invention further provides a flat heat exchanger partially filled with metal foam

Method used

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  • Flat-plate heat exchanger filled with metal foam at partial portion
  • Flat-plate heat exchanger filled with metal foam at partial portion
  • Flat-plate heat exchanger filled with metal foam at partial portion

Examples

Experimental program
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specific Embodiment approach 1

[0017] Specific implementation mode one: see Figure 1 to Figure 4 , a flat plate heat exchanger partially filled with metal foam in this embodiment includes a heat exchanger channel 1, and the flat heat exchanger also includes a plurality of metal foam sheets 5, and the plurality of metal foam sheets 5 are arranged from top to bottom Equidistantly arranged horizontally in the heat exchanger channel 1, each metal foam sheet 5 is composed of a front metal foam sheet 2 and a rear metal foam sheet 3, and the front metal foam sheet 2 and the rear metal foam sheet 3 are arranged along the heat exchange The flow direction of the medium is arranged sequentially, the porosity of the metal foam sheet 2 in the front section is between 0.65 and 0.85, and the pore density is between 50PPI and 150PPI (PPI is the number of cells on the unit inch length), and the metal foam sheet in the back section is The porosity of the foam sheet 3 is between 0.85 and 0.99, and the pore density is between...

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Abstract

The invention provides a flat-plate heat exchanger filled with metal foam at the partial portion, relates to a flat-plate heat exchanger and aims at solving the problem that an existing flat-plate heat exchanger is poor in heat exchange performance and pressure drop of a heat exchange channel is large. The flat-plate heat exchanger comprises multiple metal foam pieces which are horizontally arranged in a heat exchange channel from top to bottom at equal intervals, wherein each metal foam piece consists of a front-section metal foam piece and a rear-section metal foam piece which are sequentially arranged in the medium flowing direction, the porosity of the front-section metal foam piece is 0.65-0.85, the hole density is 50PPI-150PPI, the porosity of the rear-section metal foam piece is 0.85-0.99, and the hole density is 5PPI-150PPI. The flat-plate heat exchanger is good in heat exchange performance, and pressure drop of the heat exchange channel is small.

Description

technical field [0001] The invention relates to a plate heat exchanger, in particular to a plate heat exchanger partially filled with metal foam. Background technique [0002] The heat transfer element is a flat plate heat exchanger, which is generally called a flat plate heat exchanger. It is a new type of high-efficiency heat exchanger composed of a series of metal sheets with a certain shape. Thin rectangular channels are formed between the various plates, and heat exchange is performed through the half plates. Existing flat heat exchangers usually increase the heat exchange efficiency by changing the shape of the metal sheet, but the improvement of the shape of the metal sheet is limited. Although the heat exchange efficiency is increased to a certain extent, the current flat heat exchange The heat exchanger still has the problem of low heat exchange performance, and the pressure drop of the heat exchange channel is relatively large. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D9/00F28D17/02F28F13/12
Inventor 巩亮徐会金段欣悦王富强黄善波徐明海
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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