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Falling-film shell-and-plate heat exchanger

A heat exchanger, falling film technology, applied in the field of new heat exchangers, can solve the problems of small heat transfer area, large volume, high material cost, etc.

Active Publication Date: 2014-03-26
SHANGHAI THERMO TECH ENERGY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a large cavity between the shell and the round tube of this shell and tube heat exchanger, the volume is large, the heat transfer area is small, and the material cost is high
In recent years, falling film shell-and-tube heat exchangers sprayed from the top have appeared, which improves the heat transfer on the shell side, but the amount of pipes used is still large and the volume is also large

Method used

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  • Falling-film shell-and-plate heat exchanger

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Embodiment one, such as Figure 1 to Figure 4 As shown, the falling film plate and shell heat exchanger of the present invention includes a shell 1, a plate core 2, an end cover 3 and an end cover 4, and a shell side inlet 6 and a shell side outlet 7 are arranged on the shell 1. Cover 3 has pipe side inlet 8, pipe side outlet 9. The plate core 2 is composed of several identical plates 10, each plate has holes and protruding edges 11, which form a closed internal flow channel after combination, while the outside is a heat transfer surface formed by the plates. When in use, one fluid enters from the inlet 8 on the tube side, flows through the inner flow channel of the plate core, and then flows out from the outlet 9 on the tube side; the other fluid enters from the inlet 6 on the shell side, and sprays on the outer surface of the plate core , forming a descending flow liquid film, and the internal fluid flows out from the shell side outlet 7 after heat transfer.

Embodiment 2

[0016] Embodiment two, such as Figure 5 and Figure 6 As shown, the other parts are the same as in Embodiment 1, but there is a larger opening 12 on the upper part of the plate forming the core, and the opening also has a protruding edge, which forms a distribution channel 14 for the shell side fluid after being superimposed. Small hole 13 for the lower flow channel. When in use, the shell-side fluid enters the distribution channel 14 from the top, end or side, and then sprays from the small hole 13 to the outer surface of the plate, and flows out from the shell-side outlet after exchanging heat with another medium inside.

Embodiment 3

[0017] Embodiment three, such as Figure 7 and Figure 8 As shown, the other parts are the same as in Embodiment 1, but the two kinds of plates 14 and 15 that make up the core form a sealed space at a certain interval. When the tube side fluid flows into these interlayers, the protrusions and The grooves flow alternately, while the shell-side fluid enters from the end inlet, and after being distributed, it sprays into the open interlayer, forming a descending liquid film, and exchanging heat with the fluid on the other side. The end plate has the inlet and outlet of the tube side fluid and the inlet of the shell side fluid, no need for a separate end cover.

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PUM

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Abstract

The invention relates to a falling-film shell-and-plate heat exchanger comprising a barrel, a plate core, a distributor and a water chamber. The falling-film shell-and-plate heat exchanger is characterized in the plate core is composed of a plurality of porous plates, folded edges or projections of pores are connected to form flow channels, another medium flows on the shell side, is sprayed from the top and exchanges heat with inside medium during flowing along the outer surface of plates, all plates areally function in heat transferring, the heat transfer efficiency of the heat exchanger is improved, and the size of the heat exchange is smaller.

Description

technical field [0001] The present invention relates to a new type of heat exchanger, which can be used in heat transfer equipment. Background technique [0002] Shell and tube heat exchangers are widely used in refrigeration, air conditioning and chemical industries as heat exchange equipment in the cooling or heating process. This kind of heat exchanger uses circular tubes placed inside the shell, and the two ends are expanded or welded on the tube sheet. Two independent flow spaces on the shell side and the tube side are formed, and the two fluids transfer heat through the wall of the circular tube. The shell-and-tube heat exchanger has a large cavity between the shell and the round tube, which has a large volume, a small heat transfer area, and high material costs. In recent years, falling film shell-and-tube heat exchangers sprayed from the top have appeared, which improves the heat transfer on the shell side, but the amount of pipes used is still large and the volume ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D9/00
CPCY02P20/10
Inventor 高原郑小庆詹振乾
Owner SHANGHAI THERMO TECH ENERGY TECH
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