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Falling film evaporating pipe with netlike outer surface

A falling film evaporation, outer surface technology, applied in tubular elements, lighting and heating equipment, heat exchange equipment, etc. Improve the surface evaporation heat transfer coefficient, reduce the thickness of the liquid film, and avoid the effect of drying up

Active Publication Date: 2013-04-17
苏州新太铜高效管有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the above-mentioned falling film evaporator has the following problems: the liquid nozzles on the liquid distributor of the falling film evaporator are scattered, so the sprayed liquid is also dispersed, and the liquid distribution on the surface of the heat exchange tube is uneven.
As a result, the liquid is unevenly distributed on the surface of the heat exchange tube and the liquid in the lower part of the cavity is overfilled, which thickens the liquid film on the heat transfer surface and reduces the heat transfer effect, while part of the surface and the lower cavity lack liquid. Even dry out, unable to perform heat exchange

Method used

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  • Falling film evaporating pipe with netlike outer surface
  • Falling film evaporating pipe with netlike outer surface

Examples

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Embodiment

[0020] Example: such as figure 1 As shown, the falling film evaporation heat exchange tube of this embodiment includes a tube body 1 with a central lumen, and the two ends of the tube body are light sections. After the end plates on both sides of the device, it can be tightly fixed with the end plates. The tubular body 1 is provided with a cavity 4 that is distributed in a spiral shape along the axial direction of the tubular body, with a height of 0.4-0.7 mm and a width of 0.3-0.6 mm (the height refers to the cavity in the figure 1 The length in the up and down direction, the width is the cavity in figure 1 length in the left-right direction). The outer surface of the tube body 1 is provided with a plurality of small holes 2 communicating with the cavity 4 .

[0021] In this embodiment, grid-like microchannels 3 are also provided on the outer surface of the tube body 1 . In this way, during work, part of the liquid sprayed onto the heat exchange tube body 1 will flow into...

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Abstract

The invention discloses a falling film evaporating pipe with a netlike outer surface. The falling film evaporating pipe with the netlike outer surface comprises a pipe body with a central pipe cavity and a cavity arranged in the pipe body, wherein multiple small holes communicated with the cavity are arranged on the outer surface of the pipe body; and latticed micro-channels are also arranged on the outer surface of the pipe body. When the falling film evaporating pipe is at work, liquid on the falling film evaporating pipe is distributed very uniformly; and the falling film evaporating pipe with the netlike outer surface has the advantages of a big heat exchange area and good heat exchange effects.

Description

technical field [0001] The invention relates to a falling film evaporation heat exchange tube, in particular to a falling film evaporation tube with a mesh outer surface. Background technique [0002] The falling film evaporator is an important equipment in many industrial production processes, for example, the falling film evaporator in the chiller of the central air conditioning system. The performance of the falling film evaporator depends largely on the heat transfer performance of the heat exchange tube. [0003] The heat exchange tube has a tube body with an inner cavity. Usually, the inner wall surface of the tube body is smooth, or the inner wall surface is provided with grooves distributed in a spiral shape along the axial direction of the tube body to improve the heat transfer coefficient of the thermal fluid in the heat exchange tube. The outer surface of the tube is a smooth surface or a surface with a special structure. The special structure is: the outer surf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28F1/42
Inventor 王进强林格玮陈焕倬
Owner 苏州新太铜高效管有限公司
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