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T cell type reinforced heat exchanging tube

A technology of heat exchange tubes and small cells, which is applied in the direction of tubular elements, heat exchange equipment, lighting and heating equipment, etc., can solve the problems of reducing the flow area and increasing resistance, so as to increase the degree of turbulence and improve the heat transfer coefficient of the tube side , enhance the effect of heat exchange

Inactive Publication Date: 2008-10-08
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It is worth noting that the above patents and literature studies are all structures in which the direction of the spherical cap of the thimble is concave in the tube, which reduces the local flow area and increases the resistance greatly.

Method used

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  • T cell type reinforced heat exchanging tube
  • T cell type reinforced heat exchanging tube
  • T cell type reinforced heat exchanging tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1, see figure 1 , 2, the present invention includes the base tube 1 and the base tube 1 circumferentially evenly distributed by the base tube 1 The inner wall of the spherical crown tetracystis 2 is formed of the spherical crown tetracystis 2, and several dicytic groups flow along the base tube 1 The directions are evenly distributed, the cross-section of the base tube 1 at the D-cell is plum-shaped, and the other cross-sections are circular; due to the existence of the D-cell, the flow channel is a periodic concave-convex channel, where "L" is the tube length of the base tube 1 , "D" is the diameter of the base tube 1; the height h of the protuberance of the tetracyte is 0.1-1 mm; the radius r of the spherical crown of the tetracyte is 0.5-2.5 mm; The angle θ is 10°~120°, and the distance p between the groups of cells in the flow direction is 1mm~10mm.

[0014] see image 3 , image 3 There are two different arrangements of D-cell heat exchange tubes, and th...

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Abstract

A cell intensifying heat exchanging pipe comprises a base pipe and a cell group composed of projected spherical crown cell from an inner wall to an outer side and distributed evenly along circle of the base pipe. A plurality of the cell group is distributed along the base pipe flowing direction. Because the invention is provided with projected cell on the base pipe that effectively enhances heat transporting area in the pipe, a border layer of the inner wall of the pipe is regularly destroyed and overflow degree of the fluid in the pipe is enhanced to a great extent, which improves heating exchanging coefficient of the pipe side; At the same time, proportion of the heat exchanging amount is greater than that of the resistance addition, which further realizes the effect of improving synthesized heat exchanging performance.

Description

technical field [0001] The invention relates to a heat exchange tube used in a fluid cooler, a heater or an air compressor intercooler in the fields of energy power, petrochemical industry, nuclear reactor and the like, in particular to a t-cell reinforced heat exchange tube. Background technique [0002] Heat exchangers are widely used in petrochemical, energy power and other industrial sectors, and heat exchange tubes are an important part of them. For the currently used traditional smooth heat exchange tubes, along the direction of fluid flow, the boundary layer formed by the fluid on the wall surface will gradually thicken, so that the synergy between the velocity and temperature gradient will become poor, thereby reducing the heat exchange performance. [0003] T-cell reinforced tube is a new type of high-efficiency heat exchange tube made by using rough element structure to strengthen heat transfer technology. The engineering realization of the t-cell structure is ver...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/12
Inventor 何雅玲李瑞雷勇刚楚攀
Owner XI AN JIAOTONG UNIV
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