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A three-stage phase-change heat exchanger

A phase change heat exchanger and heat exchanger technology, applied in indirect heat exchangers, heat exchanger types, heat storage equipment, etc., can solve problems such as drying up, rising gas content of working fluid, and inability to transfer in time.

Active Publication Date: 2022-04-01
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] This single-structure heat exchanger can cope with the heat generated by high-power components during normal operation, but the heat generated by high-power components in a short period of high-frequency operation cannot be transferred in time, which can easily cause gas in the working fluid Rising rate leads to dry out, heat transfer capacity plummets

Method used

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  • A three-stage phase-change heat exchanger
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  • A three-stage phase-change heat exchanger

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Embodiment 1

[0045] Such as Figure 4 As shown, the heat dissipation system for high-power components and parts according to an embodiment of the present invention includes a three-stage phase-change heat exchanger (1), high-power components and parts (2), a radiator (3), a liquid storage tank according to the present invention (4), fluorine pump (5), coolant supply system and connecting pipelines. According to a specific embodiment of the present invention, the phase-change material is selected as a phase-change metal material with a low melting point of 48°C, and is filled between the heat-conducting ribs (2-1). Driven by the fluorine pump, the refrigerant enters the three-stage phase-change heat exchanger, absorbs the heat released by the high-power components (2), changes from single-phase to gas-liquid two-phase, and then enters the radiator to dissipate heat, and the refrigerant returns to single-phase phase state, then enters the liquid storage tank, and is finally pumped away by t...

Embodiment 2

[0047] Such as Figure 5As shown, the heat dissipation system for high-power components and parts according to an embodiment of the present invention includes a three-stage phase-change heat exchanger (1), high-power components and parts (2), a radiator (3), a liquid storage tank according to the present invention (4), fluorine pump (5) coolant supply and recovery system (7) and connecting pipelines. According to a specific embodiment of the present invention, the phase-change material is selected as a phase-change metal material with a low melting point of 48°C, and is filled between the heat-conducting ribs (2-1). Driven by the fluorine pump, the refrigerant enters the three-stage phase-change heat exchanger, absorbs the heat released by the high-power components (2), changes from single-phase to gas-liquid two-phase, and then enters the radiator to dissipate heat, and the refrigerant returns to single-phase phase state, then enters the liquid storage tank, and is finally p...

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Abstract

A three-stage phase-change heat exchanger, which is used for heat dissipation of ultra-high heat flux density and high-power components, includes: a heat exchanger main body, which includes a metal harmonica tube, a metal or alloy solid-liquid phase change material cavity, and a cavity outside the cavity Extended heat dissipation surface, two ends; cooling liquid nozzle and its support structure, including: support structure and nozzle or nozzle array. The refrigerant fluid working medium flows into the metal harmonica tube through the end, absorbs the heat introduced from the lower wall of the harmonica tube, and the vaporized refrigerant flows out from the other end of the metal harmonica tube. When the heat production increases sharply, the metal or alloy solid material in the cavity undergoes a solid-liquid phase transition, and at the same time, the nozzle on the top sprays an atomized cooling (insulating) liquid, which touches the upper surface of the heat dissipation shell, absorbs heat and vaporizes, and passes through The latent heat of the above metal or alloy solid-liquid phase transition and cooling liquid spray liquid-gas phase transition is used to absorb this part of the "extra" instantaneous large heat flow heat to ensure that the temperature of high-power components is maintained within a certain range for normal operation.

Description

technical field [0001] The invention relates to a three-stage phase change heat exchanger. Background technique [0002] As the core components of electronic devices, high-power components show a rapid increase in heat flux density, which has reached 1000W / cm 2 level. At present, the heat dissipation method of high-power components mainly relies on air cooling, and liquid cooling and two-phase flow heat dissipation have also been promoted in recent years. Due to the limited heat dissipation capacity of air cooling, the current development has encountered a bottleneck. Liquid cooling and two-phase flow heat dissipation have the characteristics of strong heat dissipation capacity and small structural volume of the heat exchanger used, and have broad application prospects in the field of heat dissipation of high-power components. The overall structure of the radiators used in these two heat dissipation forms is basically similar. The working medium fluid flows through the se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F28D20/02
CPCF28D20/021Y02E60/14
Inventor 袁卫星任柯先苗泽侯佳琪
Owner BEIHANG UNIV