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Shell and tube type heat exchanger

A technology of shell-and-tube heat exchangers and outer tubes, which is applied in the direction of heat exchangers, indirect heat exchangers, tubular elements, etc., can solve problems such as poor effect, limited load capacity, and inability to use, so as to reduce equipment and Load capacity, good effect, and the effect of controlling flow resistance

Active Publication Date: 2011-10-26
合肥天鹅制冷科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat transfer performance of liquid is usually better than that of gas, but there is not much liquid on board, and its load capacity is limited
If gas is used for heating and cooling, on the one hand, the effect is not good, and on the other hand, the switching of the hot and cold gas supplied to the two adsorption beds is also a problem.
In addition, if the exhaust temperature of the car is too high, some working fluids like activated carbon-methanol, the desorption temperature cannot exceed 120 °C, and it cannot be used if the temperature exceeds this temperature

Method used

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Embodiment Construction

[0021] See attached figure 1 , 2 , 3 and 4.

[0022] The improved shell-and-tube heat exchanger of the present invention is mainly used as an adsorption bed in adsorption refrigeration. Unlike ordinary shell-and-tube heat exchangers, the tubes placed in the shell are not single tubes but a group of The set consists of two high-efficiency heat exchange tubes. The outer tube 1 is shorter than the inner tube 2, one end of the outer tube 1 is closed, and the outer tube 1 has a small opening near the closed port, and the openings of the two outer tubes 1 that are symmetrical up and down are connected by a tube 3; the other end of the outer tube 1 is not closed , as the inlet and outlet of the heating fluid. Both ends of the inner tube 2 are not closed, and the inner cross-sectional area of ​​the inner tube 2 is larger than the annular area between the inner and outer tubes 1. Under the condition that the flow resistance is not too large, the larger the ratio, the more conducive ...

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Abstract

The invention relates to a shell and tube type heat exchanger. A heat exchanger tube consists of an inner tube and an outer tube, wherein the inner tube is sleeved inside the outer tube, and the length of the inner tube is greater than that of the outer tube. One end of the outer tube is closed, and the closed end of the outer tube is provided with through holes on the tube wall, and two through holes of the outer tube are communicated through a connecting tube. The inner tube is a low finned tube, the outer tube is a finned tube, and a partition board for dividing a plurality of heat exchanger tubes into two parts and is arranged in a shell body. The invention provides the shell and tube type heat exchanger which can solve the problem that a cold or heat source is not available on a vehicle at the same time and has compact structure and good heat exchange effect.

Description

technical field [0001] The invention relates to the technical field of heat exchangers, in particular to a shell-and-tube heat exchanger used as an adsorption bed in an adsorption refrigeration system. Background technique [0002] At present, most of the adsorption beds used in adsorption refrigeration systems use shell-and-tube heat exchangers. The adsorbent is placed in the shell layer, and the heat-exchanging fluid passes through the tubes, which are generally cold or hot gases or cold or hot liquids. Liquids are generally better at exchanging heat than gases, but there isn't much liquid on board and its load capacity is limited. If gas is used for heating and cooling, on the one hand, the effect is not good, and on the other hand, the switching of the hot and cold gas supplied to the two adsorption beds is also a problem. In addition, if the exhaust gas temperature of the automobile is too high, the desorption temperature of certain working fluids such as activated car...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D7/00F28F1/42
Inventor 王伟金从卓张贤根易广江赵贝
Owner 合肥天鹅制冷科技有限公司
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