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Ordinary-temp magnetically refrigerating material and its preparing process

A technology of magnetic refrigeration material and manufacturing method, applied in the field of refrigeration working medium and its manufacturing method, to achieve the effect of preventing oxidation

Inactive Publication Date: 2004-08-11
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if room temperature magnetic refrigeration is to go to the market, it must first solve the problems of efficiency, reliability and economy

Method used

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  • Ordinary-temp magnetically refrigerating material and its preparing process
  • Ordinary-temp magnetically refrigerating material and its preparing process
  • Ordinary-temp magnetically refrigerating material and its preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The room temperature magnetic refrigeration material produced by the present invention is formed by laminating material sheet units with a thickness of 0.1 mm, and the thickness of the formed sheet core is 5 mm. The material sheet unit is arranged every 5 mm between each layer of material sheet unit and the material sheet unit. There is a small round table with a diameter of 1 mm and a height of 0.05 mm, so that a channel for liquid flow is formed between the material sheet units. The material sheet unit is composed of upper and lower layers of copper skins with a thickness of 0.01 mm. Between the two layers of copper skins are filled with gallium, which is a liquid anti-oxidation and thermal conductivity agent. The liquid gallium is filled with room temperature magnetic refrigeration material gadolinium for refrigeration. The working fluid, the particle size of the refrigerating working fluid is 0.005 mm, and there are indentations between the upper and lower copper skins ...

Embodiment 2

[0028] Embodiment 2: The structure and manufacturing method of the room temperature refrigerating material are basically the same as those of embodiment 1, except that: the refrigerating medium is superparamagnetic room temperature refrigerating medium, the particle size is 0.001 mm, and the thickness of the material sheet unit is 0.05 Mm, sprinkle spherical metal powder with a particle size of 0.05 mm between the material sheet units, and the thickness of the sheet roll formed by the material sheet units is 90 mm.

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Abstract

A magnetic refrigerating material for ordinary temp. is prepared from sheet units through laminating. The sheet unit is composed of two metal sheets with boss spots in-between, heat conducting liquid between two sheets, and magnetic refrigerating powder contained in the said liquid. Its preparing process includes such steps as preparing magnetic refrigerating powder, adding it to the heat conducting liquid, sealing the liquid between two metal sheets, pressing and laminating.

Description

1. Technical Field [0001] The invention relates to a type of refrigerating working medium and its preparation method, in particular to the mounting molding of superparamagnetic refrigeration materials and ferromagnetic materials used for room temperature magnetic refrigeration and its preparation method. 2. Background technology [0002] The development of modern society and the improvement of quality of life require a comfortable environment. The refrigeration technology as the blood of modern science has gradually developed and matured in the past 200 years, bringing comfort and enjoyment to human life, and also providing science and technology. Research and use the platform. Because one third of human energy is consumed in refrigeration, the state of refrigeration technology is extremely important to human survival. Refrigeration technologies mainly include liquid vaporization refrigeration, gas expansion refrigeration, adsorption refrigeration, thermoelectric refrigeration, v...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/00
Inventor 卢定伟
Owner NANJING UNIV