Electro-deposition foam metal for phase change cold accumulation and preparation method thereof

Abstract

The invention discloses electro-deposition foam metal for phase change cold accumulation and a preparation method thereof, and relates to the technical field of heat and mass transfer. The electro-deposition foam metal for phase-change cold accumulation comprises electro-deposition foam metal and a phase-change cold accumulation material. A micro-nano structure is electrochemically deposited on the surface of the foam metal; and the phase change cold storage material is attached to the surface of the foam metal deposited with the micro-nano structure. The foam metal has a micro-nano structure,and the micro-nano structure can increase the heat transfer contact area of the foam metal, can improve the heat conduction of the foam metal and can strengthen the heat transfer process of the phasechange cold storage material. Meanwhile, due to the fact that the micro-nano structure can provide a large number of crystal nucleation sites when the material is solidified, solid-phase crystals canbe adsorbed to the surface of the structure more easily, and the supercooling problem of an existing cold storage material is solved. Moreover, the micro-nano structure can better bind the phase change cold accumulation material in a specific space, and the attachment stability of the cold accumulation material on the surface of the foam metal in the repeated solidification and melting process isimproved.

Description

technical field [0001] The invention relates to the technical field of heat and mass transfer, in particular to an electrodeposited metal foam used for phase change cold storage and a preparation method thereof. Background technique [0002] Metal foam has a wide range of applications in the field of heat and mass transfer. Among them, filling the metal foam into the cold storage material can enhance the thermal conductivity of the cold storage material. However, since the skeleton surface of metal foam is generally smooth, the contact thermal resistance between it and the cold storage material is relatively large. After the cold storage material is melted and solidified many times, it is easy to gather in the center of the cell of the foamed metal, and the contact with the foamed metal skeleton becomes poor. In addition, although metal foam can enhance heat transfer to a certain extent, it does not improve the supercooling phenomenon during the phase transition of cold st...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electrodeposited metal foam for phase change cold storage, which can effectively solve the problems of large contact thermal resistance, poor stability, and large supercooling difference of cold storage materials in the prior art through the arrangement of micro-nano structures

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