Condensation heat exchange pipe and manufacturing and using method thereof

Abstract

The invention provides a condensation heat exchange pipe. The condensation heat exchange pipe comprises a heat exchange base pipe and a plurality of fins connected to the outside of the heat exchange base pipe in a sleeving mode. Each fin is provided with a first surface which is a plane. The heat exchange base pipe is provided with an axis and extends along the axis. The plane where the first surface of each fin is located and the axis of the heat exchange base pipe intersect obliquely. Accumulating of condensation water on the fins can be effectively inhibited through the condensation heat exchange pipe provided by the invention. The invention further provides a manufacturing and using method of the condensation heat exchange pipe.

Description

technical field [0001] The invention relates to a condenser, in particular to a condensation heat exchange tube. The condensing heat exchange tube provided by the present invention is especially suitable for the working condition of the condensation of steam containing non-condensable gas, such as recovery of water in flue gas at the tail of a boiler. The invention also provides a method for manufacturing and using the condensing heat exchange tube. Background technique [0002] In the development process of enhanced heat exchange tubes, adding fins is undoubtedly an efficient way to enhance heat exchange. The main forms of fins are needle ribs, straight ribs, ring ribs, and integral fins (flat fins) represented by air conditioner external units. fins, triangular corrugated fins, sinusoidal corrugated fins, slotted fins), etc. However, the effect of traditional fins to enhance heat transfer is not good in condenser design. The newly developed condensing tube with a drainin...

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Problems solved by technology

[0002] In the development process of enhanced heat exchange tubes, adding fins is undoubtedly an efficient way to enhance heat exchange. The main forms of fins are needle ribs, straight ribs, ring ribs, and integral fins (flat fins) represented by air conditioner external units. sheet, triangular corrugated sheet, sinusoidal corrugated sheet, slotted sheet), etc. However, the effect of traditional fins to enhance heat transfer is not good in condenser design

The newly developed condensing tube with a draining ring blocks the growth and thickening of the liquid film by the draining ring, and the condensate is discharged in time, thus reducing the thickness of the liquid film and strengthening the condensation heat transfer, but the draining It is unscientific to arrange the ring vertically to the axis of the condensing heat exchange tube. Condensate will accumulate and grow thicker on the horizontal drainage ring, and the condensate will not overflow and discharge until the thickness of the condensate is thick enough. Therefore, the vertical arrangement design is conducive to condensation. The occurrence of the process and the enhancement of heat transfer, but there are still defects

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