Ultrasonic enhanced heat transfer tank type cooling device utilizing microbubble emission boiling

Abstract

The embodiment of the invention relates to the field of efficient heat exchange, and provides an ultrasonic enhanced heat transfer tank type cooling device utilizing microbubble emission boiling. Thedevice adopts a tank type heat sink design; a flowing loop of the cooling liquid is separated from a channel for carrying out microbubble emission boiling on a cooling working medium; then, a staggered chamfering through hole is used for sinking the heating surface, and an ultrasonic transducer is combined to introduce an ultrasonic cavitation effect and an ultrasonic sound flow effect; the supercooling degree of the cooling working medium close to the heating surface is stabilized on the basis that the reliability of the microbubble emission boiling cooling device is improved, and the stableoccurrence of microbubble emission boiling is maintained so as to meet the cooling requirement, which cannot be met by a conventional heat dissipation mode, of ultra-high heat load heating equipment.

Description

technical field [0001] The present application relates to a high-efficiency heat exchange cooling device, in particular to an ultrasonically enhanced heat transfer pool type cooling device utilizing micronized boiling of bubbles. Background technique [0002] With the development of science and technology, in many industrial fields such as energy, power and aerospace, cooling methods such as single-phase heat exchange and conventional boiling have been difficult to meet the cooling needs of the heating surface of high-heat-load heating equipment. [0003] In the 1980s, Japanese scholars Inada et al. discovered a special boiling phenomenon with extremely high heat transfer capacity—Microbubble Emission Boiling (MEB for short), (Inada, S., Miyasaka, Y., Sakumoto , S., Izumi, R., 1981. A study on boiling curves in subcooled poolboiling (2nd Report, An effect of contamination of surface on boiling heat transfer and collapse vapor slug). Transaction of JSME 47, 2021-2029). The h...

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Problems solved by technology

[0004] However, when bubble miniaturization and boiling occur, bubble breakage will introduce severe pressure oscillations, which will inevitably cause certain damage to equipment such as pipelines and water pumps through which the cooling fluid flows, and affect their service life; when cooling high-heat-load heating equipment When the heating surface is on the heating surface, the subcooling degree required for micronized boiling of the cooling working medium near the heating surface is not easy to maintain, so that the stable occurrence of micronized bubble boiling cannot be guaranteed; in addition, as the heating surface oxidizes, the heat transfer capacity of micronized bubbles will decrease. drop, or even stop happening

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