Phase change heat storage device based on gradient metal foam

A technology of metal foam and phase change heat storage, applied in heat storage equipment, heat exchange equipment, heat exchanger types, etc., can solve the problems of large amount of consumables, large volume, low heat exchange efficiency, etc., and prolong the heat release time , Increase the specific surface area of ​​heat transfer and improve the effect of heat storage performance

Inactive Publication Date: 2013-08-07
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims at the above-mentioned deficiencies in the prior art, and provides a gradual metal foam-based phase change heat storage device for house insulation, which can control the heat storage and discharge time by adjusting the gradient shape parameters, and enhance the phase change through the gradual change metal foam Thermal performance, which solves the problems of low heat exchange efficiency, large amount of consumables, and large volume in the existing heat storage time

Method used

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  • Phase change heat storage device based on gradient metal foam
  • Phase change heat storage device based on gradient metal foam

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, this embodiment includes: two heat insulation panels 10, 11, two heat exchange wall surfaces 8, two heat insulation wall surfaces 9, a gradient metal foam 6 in which the density of internal through holes gradually changes, and phase change materials. Transformation part 7, wherein: the gradient metal foam 6 is sintered in the middle of the two heat exchange walls 8, and the density gradually decreases from left to right along the vertical direction of the heat exchange walls 8, the left side is facing the outdoor side, and the right side is facing the outside. On the side of the house, a heat insulating wall 9 is arranged on the upper and lower sides; the phase change part 7 is filled in the inside of the gradient metal foam 6; the outer sides of the two heat exchange walls 8 are respectively provided with a heat insulating board 10, 11.

[0025] The material of the gradient metal foam 6 can be copper, nickel, aluminum and their alloys; the ph...

Embodiment 2

[0030] Such as figure 2 As shown, this embodiment is an example of the graded metal foam 6 filled with the phase change portion 7 in Embodiment 1, and the graded metal foam 6 includes: a first through-hole copper foam layer 1, a second through-hole copper foam layer 2 , the third through-hole copper foam layer 3 , the fourth through-hole copper foam layer 4 and the fifth through-hole copper foam layer 5 , each layer of foam is filled with phase change parts 7 . After the through-hole copper foam layers are prepared by investment casting method, silver-copper alloy sheets with high thermal conductivity are added between the layers, placed in a high-temperature electric furnace and heated until the silver-copper alloy is melted, and then cooled, and finally each metal The foam layers are sintered together.

[0031] The density of 2 holes in the first through-hole copper foam layer is 40PPI; the density of 3 holes in the second through-hole copper foam layer is 30PPI; the densi...

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Abstract

A phase change heat storage device based on gradient metal foam is used for building insulation and utilizes the technical field of the rigid heat transfer bodies. The phase change heat storage device based on the gradient metal foam comprises two insulation plates, two heat exchange wall surfaces, two adiabatic wall surfaces, gradient metal foam with the gradually-changed denseness of inner through holes and a phase change portion prepared of phase change materials. The gradient metal foam is sintered between the two heat exchange wall surfaces, the denseness of the gradient metal foam gradually decreases from left to right in the vertical direction of the heat exchange wall surfaces, the left side portion faces the outdoor, the right side portion faced the indoor, the upper side portion and the lower side portion are respectively provided with an adiabatic wall surface. The phase change portion is filled in the gradient metal foam. Two insulation plates are arranged on the outside of the two heat exchange wall surfaces respectively. According to the phase change heat storage device based on the gradient metal foam, the heat storage and release time can be controlled by adjusting gradient feature parameters, the phase change heat exchange performance can be enhanced through the gradient metal foam, and the problems of poor heat exchange efficiency, great material consumption, large size and the like in existing heat exchange time are solved.

Description

technical field [0001] The invention relates to a device in the technical field of using a rigid heat transfer body, in particular to a gradual metal foam-based phase change heat storage device for house insulation. Background technique [0002] The rapid development of industry has caused great damage to the environment, and the degree of air pollution has intensified. In recent years, the country has paid more and more attention to energy conservation and emission reduction, and how to make full use of the existing clean energy has become a top priority. As a clean energy that can be widely used, solar energy receives a total radiation of 3.3×10 3 -8.4×10 6 KJ / m 2 , equivalent to 2.4×10 4 tons of standard coal, but has the disadvantages of seasonality and diurnal periodicity. Solar energy can be widely used in the field of building energy conservation. In view of the cyclical characteristics of solar energy, efficient heat insulation materials, light-transmitting mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F28D20/02F28F21/08
CPCY02E60/145Y02E60/14
Inventor 徐治国赵长颖王美琴
Owner SHANGHAI JIAO TONG UNIV
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