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Metal-matrix composite chemical heat-storage material and method for preparing same

A metal-based composite and chemical heat storage technology, which is applied in chemical instruments and methods, heat exchange materials, etc., can solve the problem of low thermal conductivity of chemical heat storage materials, achieve a wide range of applications, improve thermal conductivity, and thermal conductivity Good results

Active Publication Date: 2015-03-18
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, the thermal conductivity of chemical heat storage materials is not too high

Method used

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  • Metal-matrix composite chemical heat-storage material and method for preparing same
  • Metal-matrix composite chemical heat-storage material and method for preparing same

Examples

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Effect test

Embodiment 1

[0028] The chemical heat storage material adopts Ca(OH) 2 , the metal matrix adopts Ni foam, the specific preparation method is as follows: first 300g Ca(OH) 2 Add 400g of distilled water and stir until uniform to make a suspension; 300g of foam Ni with three different pore sizes (450μm, 700μm, and 900μm) were used to immerse the above suspension respectively, and pressurized and impregnated for 10 minutes under the condition of 0.9MPa. Repeat pressure impregnation for 5 times, then take out the base material and dry it in a constant temperature oven at 120°C for 24 hours to make a nickel-based composite chemical heat storage material. It is measured that the loading rates of composite chemical heat storage materials with pore diameters of 450 μm, 700 μm and 900 μm are 52%, 49.5% and 49%, respectively. figure 2 It is a schematic diagram of the reaction rate of the nickel-based composite chemical heat storage material changing with the number of reactions. It can be seen from...

Embodiment 2

[0030] The chemical heat storage material adopts Ca(OH) 2 , the metal substrate is made of foamed Cu, the specific preparation method is as follows: first 300g Ca(OH) 2 Add 700g of distilled water and stir until uniform to form a suspension; use 300g of foam Cu with a pore size of 600μm to immerse in the above suspension, pressurize and impregnate for 15 minutes under the condition of 0.7MPa, repeat pressurized impregnation for 7 times, then take out the matrix material and place After drying in a constant temperature oven at 120°C for 24 hours, a copper-based composite chemical heat storage material is produced.

Embodiment 3

[0032] The chemical heat storage material uses Mg(OH) 2 , the metal substrate is made of foamed Cu, the specific preparation method is as follows: first, 300g Mg(OH) 2 Add 1200g of distilled water and stir until uniform to form a suspension; 200g of Cu foam with a pore size of 500μm is used to immerse the above suspension, pressurized and impregnated for 20 minutes under the condition of 0.5MPa, and repeatedly pressurized and impregnated 8 times, then take out the matrix material and place After drying in a constant temperature oven at 120°C for 24 hours, a copper-based composite chemical heat storage material is produced.

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Abstract

The invention provides a metal-matrix composite chemical heat-storage material and a method for preparing the same. The method comprises the following specific steps: adding distilled water into a chemical heat-storage material, stirring to form a suspension, soaking a metal-matrix porous body into the suspension of the heat-storage material under the pressurizing condition, and pressurizing repeatedly to obtain the metal-matrix composite chemical heat-storage material. The metal-matrix composite chemical heat-storage material can be used in the high-temperature condition, solves the problem that the chemical heat-storage material can expand or contract to deform due to chemical reaction and has good stability. In addition, the metal-matrix porous body has good heat-conducting performance and can improve the coefficient of heat conductivity of the composite chemical heat-storage material.

Description

technical field [0001] The invention relates to the technical field of inorganic materials and energy saving. In particular, it relates to a metal-based composite chemical heat storage material and a preparation method thereof. technical background [0002] Heat storage technology is an important technology to improve energy utilization efficiency and protect the environment. It can be used to solve the imbalance between supply and demand of heat energy. Energy saving and other fields have broad application prospects. At present, thermal energy storage has become a research hotspot in the world. The heat storage material is the core of the heat storage technology. Heat storage material is a new type of chemical material that can store heat energy. [0003] Thermochemical heat storage uses the heat absorbed and released during the chemical change process to store heat. Chemical reaction heat storage is an important method in thermochemical heat storage methods. Chemical...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K5/16
Inventor 黄宏宇何兆红袁浩然小林敬幸赵丹丹陈勇郭华芳
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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