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Volumetric heat exchanger with self-excited pulsating enhanced heat exchange function and working method thereof

An enhanced heat transfer, volumetric technology, applied in the direction of heat exchanger type, indirect heat exchanger, heat transfer modification, etc., can solve the problem of not being able to use beneficial structural vibration, not being able to grasp the relationship between pulsating flow and pipeline structure vibration, etc. problem, to achieve the effect of reducing heat transfer area and material consumption, compact structure and convenient installation

Active Publication Date: 2018-10-12
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although it is a kind of passive pulsation enhanced heat transfer, it has not been able to grasp the potential connection between pulsating flow and pipeline structural vibration, and has not been able to use beneficial structural vibration to serve enhanced heat transfer.

Method used

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  • Volumetric heat exchanger with self-excited pulsating enhanced heat exchange function and working method thereof
  • Volumetric heat exchanger with self-excited pulsating enhanced heat exchange function and working method thereof
  • Volumetric heat exchanger with self-excited pulsating enhanced heat exchange function and working method thereof

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Embodiment Construction

[0038] In order to make the above objects, features and advantages of the present invention more obvious and understandable, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0039] Those skilled in the art can understand that unless otherwise defined, all terms (including technical terms and directional terms) used herein have the same meanings as commonly understood by those of ordinary skill in the art to which the present invention belongs.

[0040] Such as Figure 1 to Figure 4 As shown, it is a self-excited pulsation-enhanced volumetric heat exchanger of the present invention, which includes a shell 1, a partition plate 2, a heat medium inlet pipe section 3, a heat medium outlet pipe section 4, a refrigerant inlet pipe section 5, and a refrigerant outlet pipe section Pipe section 6, heat exchange tube 7, hose 8, flow limiting valve 10, self-excited oscillation device 12 and pulsating hydraulic...

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Abstract

The invention provides a volumetric heat exchanger with a self-excited pulsating enhanced heat exchange function and a working method thereof. The volumetric heat exchanger comprises a shell, a partition plate, a heating medium inlet pipe section, a heating medium outlet pipe section, a refrigerating medium inlet pipe section, a refrigerating medium outlet pipe section, a heat exchange pipe, hoses, a flow limiting valve, a self-excited oscillation device and a pulsating hydraulic transmission device. According to the volumetric heat exchanger with the self-excited pulsating enhanced heat exchange function, a pulsating jet is produced by the heating medium when the heating medium passes through a Helmholtz resonant cavity of the self-excited oscillation device; by utilization of the pulsating hydraulic transmission device, the pulsating jet is effectively converted into beneficial vibrations of the heat exchange pipe; compared with that of the stable-state flowing condition, the heat exchange efficiency of the volumetric heat exchanger is improved by 30%; as the heat exchange efficiency is improved, the heat transfer area of the heat exchange pipe and the material consumption are reduced; and the volumetric heat exchanger is compact in structure, convenient to mount, and applicable to ship waste heat recovery, power station oil transportation, chemical engineering heating, and the like.

Description

technical field [0001] The invention relates to a pulsation enhanced heat exchanger, in particular to a self-excited pulsation enhanced heat exchange volumetric heat exchanger and its working method, belonging to the technical field of heat exchangers. Background technique [0002] In daily industrial production, due to the needs of heat energy transfer, exchange, conversion and control, heat exchangers are widely used. As we all know, the overall size of the volumetric heat exchanger is large, and the heat transfer coefficient is small. This is because the relative velocity between the heat transfer surface and the surrounding fluid is small, and there is only a natural convection cycle, which makes the heat transfer performance of the traditional volumetric heat exchanger very poor. Low. In addition, fouling in heat exchangers tends to degrade heat transfer performance. In recent years, with the development of domestic energy-saving policies and industries, the issue of ...

Claims

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Application Information

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IPC IPC(8): F28D7/02F28F13/10F28F13/12F28F19/00
Inventor 温华兵吴俊杰张东辉王军洪良星李志远
Owner JIANGSU UNIV OF SCI & TECH
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