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Energy-storage materials of construction and its preparation method

A building energy storage and energy storage technology, which is applied in the direction of building components, heat exchange materials, chemical instruments and methods, etc., can solve problems such as corrosion and liquid phase leakage of energy storage materials, and reduce the number of start-up and stop times and phase change volume The effect of small changes and reduced range of temperature changes

Inactive Publication Date: 2006-02-08
NANJING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It strengthens the heat transfer during heat storage and heat release, and solves the leakage and corrosion of the liquid phase of energy storage materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A building energy storage material according to the present invention is formed by mixing the following mass percentages: heptadecane (4.2%), octadecane (46.8%), nonadecane (36%) and eicosane (13% ).

[0026] The mixture was heated to a completely molten state and stirred well to form a eutectic mixture. It has been determined that its solidification temperature is 23.5°C, its melting temperature is 26.8°C, and its latent heat of fusion is 142.5kJ / kg.

[0027] The eutectic mixture is packaged in a spherical hollow plastic cavity with good thermal conductivity; and the spherical energy storage body is filled into the cavity of the hollow brick to form a building energy storage material.

Embodiment 2

[0029] A building energy storage material according to the present invention is formed by mixing the following mass percentages: heptadecane (3%), octadecane (48%), nonadecane (38%) and eicosane (11% ).

[0030] The mixture was heated to a completely molten state and stirred well to form a eutectic mixture. It is determined that its solidification temperature is 24.2°C, its melting temperature is 27.2°C, and its latent heat of fusion is 140.8kJ / kg.

[0031] The eutectic mixture is packaged in a cylindrical hollow plastic cavity with good thermal conductivity; and the cylindrical energy storage body is filled into the cavity of the hollow brick to form a building energy storage material.

Embodiment 3

[0033] A building energy storage material according to the present invention is formed by mixing the following mass percentages: heptadecane (5%), octadecane (46%), nonadecane (34%) and eicosane (15% ).

[0034] The mixture was heated to a completely molten state and stirred well to form a eutectic mixture. It is determined that its solidification temperature is 24.9°C, its melting temperature is 27.5°C, and its latent heat of fusion is 141.6kJ / kg.

[0035]The eutectic mixture is packaged in a spherical hollow plastic cavity with good thermal conductivity; and the spherical energy storage body is filled into the cavity of the hollow brick to form a building energy storage material.

[0036] The building energy storage material made by the invention helps to maintain the required temperature and humidity indoors, thus reducing the energy consumption of building heating and air conditioning. At the same time, the energy storage material is non-toxic, non-corrosive, has no supe...

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Abstract

Disclosed is an energy storage building material and preparing method, wherein the material is prepared by mixing heptadecane, octadecane, nonadecane, and eicosane by a certain proportion. The preparation process consists of heating organic phase change energy-storage material to form congruent melting mixture, packaging in spherical or cylindrical hollow plastic chambers with good thermal conductivity, then filling the spherical or cylindrical energy-storage members into the cavities of the hollow bricks. The invention can solve the problem of leakage and corrosion of the liquid phase energy-storage material.

Description

1. Technical field [0001] The invention relates to a building material, in particular to a building energy storage material and a preparation method thereof. 2. Background technology [0002] Energy saving and environmental protection are the most important issues in the field of energy utilization, and energy storage using the phase change latent heat of phase change materials is a new environmental protection and energy saving technology. During the process of phase change, the phase change material absorbs the heat of the environment and releases heat to the environment when needed, so as to achieve the purpose of controlling the temperature of the surrounding environment and saving energy. It has broad application prospects in building energy saving, solar energy utilization, refrigeration and air conditioning, heat recovery and other fields. [0003] At present, my country's urban and rural existing construction area is about 40 billion square meters, of which 95% do n...

Claims

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Application Information

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IPC IPC(8): C09K5/04E04B1/76
Inventor 方贵银邢琳杨帆李辉
Owner NANJING UNIV
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