Turbulence intensified heat transfer device for dynamically controlling cylindrical vortex generator and working method of turbulence intensified heat transfer device

A vortex generator, dynamic control technology, applied in the direction of heat transfer modification, heat exchange equipment, lighting and heating equipment, etc., can solve the problems of changing the vortex generator, can not meet the requirements, energy consumption, etc., to reduce the vibration frequency and/or amplitude, improve overall heat transfer performance, enhance the effect of fluid disturbance

Active Publication Date: 2020-07-10
NANJING UNIV OF SCI & TECH
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Problems solved by technology

However, due to the dynamic change of the heat flux, the fixed vortex generator can no longer meet the demand, and because the fixed vortex generator cannot dynamically change the structure of the vortex generator with the change of the heat flux, the flow generates many unn

Method used

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  • Turbulence intensified heat transfer device for dynamically controlling cylindrical vortex generator and working method of turbulence intensified heat transfer device
  • Turbulence intensified heat transfer device for dynamically controlling cylindrical vortex generator and working method of turbulence intensified heat transfer device
  • Turbulence intensified heat transfer device for dynamically controlling cylindrical vortex generator and working method of turbulence intensified heat transfer device

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] The dynamic control turbulence generator heat transfer enhancement structure of the heat exchanger for high-intensity heat exchange with dynamic change of heat flux of the present invention is based on the traditional fixed vortex generator structure combined with the existing turbulent heat transfer principle And the heat transfer structure improved by the principle of dynamic mechanical control.

[0025] combine Figure 1-3 , a turbulence enhanced heat transfer device for dynamically controlling a cylindrical vortex generator, comprising a cylindrical vortex generator 1, a sealing device 4 and a dynamic control structure, the cylindrical vortex generator 1 includes a plurality of rows of cylinders arranged on a heat transfer surface , the number of cylinders in each row is at least one, the bottom of each cylinder is connected to a ...

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Abstract

The invention discloses a turbulence intensified heat transfer device for dynamically controlling a cylindrical vortex generator and a working method of the turbulence intensified heat transfer device. The device comprises the cylindrical vortex generator, sealing devices and dynamic control structures, wherein the cylindrical vortex generator comprises a plurality of rows of cylinders arranged ona heat transfer surface; the bottom of each cylinder is connected with one dynamic control structure arranged in the heat transfer device; one sealing device is arranged between each cylinder and theheat transfer surface; and the dynamic control structures can control the cylinders to stretch out and draw back from the heat transfer surface. The dynamic vortex control technology is adopted for achieving dynamic control over changes of flowing vortexes, dynamic mechanical control and flowing heat transfer are combined, the included angle between the flowing direction and the fluid temperaturegradient is reduced through a dynamic turbulent flow effect, and therefore the convection heat exchange capacity is effectively improved, the phenomenon of local heat transfer deterioration can be avoided, and the dynamic control capability is high.

Description

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Claims

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Application Information

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Owner NANJING UNIV OF SCI & TECH
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