Heat pipe phase interface visualization experiment section under swing condition and experiment method

Abstract

The invention discloses a heat pipe phase interface visualization experiment section under a swinging condition and an experiment method. The heat pipe phase interface visualization experiment section comprises a swinging table and a visualization closed container installed at the top end of the swinging table. A porous medium wick is mounted at the bottom end in the visual closed container, and a gas channel is formed between the top end of the porous medium wick and the visual closed container; a gas outlet and a liquid filling opening are formed in the two ends of the top of the visual closed container respectively, a condensation section, a heat insulation section and an evaporation section are sequentially arranged at the bottom end of the visual closed container in the direction of the porous medium wick, a cooling device is installed on the condensation section of the visual closed container, the heat insulation section is covered with a heat preservation layer, and a heating device is installed on the evaporation section. The heating device and the cooling device are arranged at the two ends of the porous medium wick respectively. A visual closed container is adopted in the experiment section, the phase interface change process in the porous medium can be observed in real time, and the requirement for visual observation of the phase interface change characteristic can be met by reasonably arranging a light source and a high-speed camera.

Description

technical field [0001] The invention relates to the technical field of experimental research on heat transfer performance of heat pipes, in particular to an experimental section and an experimental method for visualizing a phase interface of a heat pipe under swing conditions. Background technique [0002] Heat pipe cooling technology has great application prospects in marine micro-miniature nuclear power systems. The heat pipe realizes the long-distance transmission of high power density heat based on the evaporation and condensation of its internal working fluid. The liquid working medium absorbs heat and evaporates into a gaseous state in the evaporation section, and condenses into a liquid state with exothermic heat in the condensation section, and then flows back to the evaporation section driven by the capillary force of the porous medium. Although the heat pipes are different in terms of the working fluid, the shape and position of the capillary wick, and the channel...

AI Technical Summary

Problems solved by technology

Although the heat pipes are different in the working fluid, the shape and position of the capillary wick, and the channel structure, the overall performance of the heat pipe will be affected if the position of the internal phase interface in the porous medium of the heat pipe is too high or too low.

Especially under the influence of additional forces under special ocean conditions, the continuous fluctuation of the phase interface position may cause various heat transfer limits, and then cause serious accidents of core damage due to heat pipe failure

[0003] At present, the visualization research on the interior of heat pipes under moving conditions is not perfect at home and abroad, and the relevant experimental research mainly focuses on low-temperature or medium-temperature heat pipes, lacking the ability to study the heat transfer stability of the internal phase interface of porous media in high-temperature heat pipes under swing conditions. The design scheme of the experimental section

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