A composite building material capable of energy storage

A technology for building materials and energy storage, applied in the field of composite building materials, can solve the problems of low utilization rate of energy storage, affect energy storage capacity, reduce system efficiency, etc., and achieve the effects of improving operating efficiency, increasing temperature regulation capability, and improving thermal inertia.

Inactive Publication Date: 2015-05-06
阚健美
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most inorganic phase change energy storage materials are corrosive, and have the disadvantages of overcooling and phase separation during the phase change process, which affect their energy storage capabilities; while organic phase change energy storage materials are not only less corrosive, but also There is almost no disadvantage of phase separation during the transformation process, and the chemical properties are stable and the price is cheap
However, organic phase change energy storage materials generally have the disadvantage of low thermal conductivity, which leads to poor heat transfer performance and low energy storage utilization rate in the application of energy storage systems. thereby reducing the performance of the system

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment l

[0021] Capric acid and lauric acid were heated and melted at a mass ratio of 5:2 and then mixed into a eutectic mixture. It was measured that the melting temperature was 23.891°C, the latent heat of fusion was 136.215 kJ / kg, and the solidification temperature was 19.596°C. The latent heat of solidification is 135.951 kJ / kg.

[0022] Then heat the eutectic mixture to a completely molten state, and compound it into the building matrix material. During the preparation process, the ordinary gypsum board is kept at a temperature of 40±5°C for 5 hours, and then immersed in a storage tank filled with phase change energy storage materials. Soak in the tank for 8 minutes at a temperature of 40±5°C. All panels were weighed before and after impregnation to determine the absorption rate of the phase change energy storage material in the building matrix material. 5%。 The average absorption rate of the energy storage gypsum board is 27.5%.

Embodiment 2

[0024] Capric acid and lauric acid are heated and melted at a mass ratio of 3:1 and mixed to form a eutectic mixture. The building matrix material is a concrete slab. First, the eutectic mixture is sealed into capsules, and then the capsules are filled or loaded into the building matrix material.

Embodiment 3

[0026] Capric acid and lauric acid are heated and melted at a mass ratio of 5:3 and mixed to form a eutectic mixture. The building matrix material is foam board. All the other are with embodiment 1.

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Abstract

A composite building material capable of energy storage is disclosed. The composite material is obtained by compositing a mixture comprising capric acid and lauric acid, and a building base material, wherein the weight ratio of the capric acid and the lauric acid is 5:2. A preparing method of the composite material includes: heating the capric acid and the lauric acid separately, mixing the capric acid and the lauric acid according to the ratio above mentioned after the capric acid and the lauric acid are fully melt to form an eutectic mixture, heating the eutectic mixture to a complete melting state, and compositing the eutectic mixture to a building base material to form the building material capable of energy storage. In the field of building energy conservation, through compositing a wall material and an energy storing material, the temperature adjusting capability of a building can be improved, and the objectives of energy conservation and comfort can be achieved. The phase-transition temperature (19-24 DEG C) of the energy storing material agrees well with the adjusting temperature (18-25 DEG C) in a room, and the energy storing material is high in latent heat of phase change (120-150 kJ / kg), free of supercooling and phase separation phenomena, nontoxic, non-corrosive, stable in performance and good in repeatability.

Description

technical field [0001] The invention relates to a building material, especially a composite building material capable of storing energy. Background technique [0002] Energy saving and environmental protection are the most important issues in the field of energy utilization. Using phase change latent heat of phase change materials to store energy (cold storage, heat storage) is a new environmental protection and energy saving technology. During the process of phase change itself, the phase change material absorbs the heat (cold) of the environment and releases the heat (cold) 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] An intersecting energy storage material is a material that absorbs heat when it melts and release...

Claims

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Application Information

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IPC IPC(8): C09K5/06
CPCC09K5/06C04B24/085C04B2103/0071
Inventor 阚健美
Owner 阚健美
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