Energy storage composite building material

Abstract

The invention discloses an energy storage composite building material. The energy storage composite building material is prepared via combination of a mixture of capric acid and lauric acid with a building base material, wherein mass ratio of capric acid to lauric acid is controlled to be 7:3. According to a preparation method, capric acid and lauric acid are heated respectively until complete fusion is realized, and the molten mixture of capric acid and lauric acid is obtained at the above mass ratio; the molten mixture is heated to realize complete fusion; and combination of the molten mixture with the building base material is carried out so as to obtain the energy storage composite building material. In the field of building energy saving, temperature regulation capacity of buildings can be improved via combination of a wall material with the energy storage composite building material, so that energy saving is realized, and comfort is achieved. The phase-transition temperature (19 to 24 DEG C) of the energy storage composite building material is almost identical to an indoor attemperation (18 to 25 DEG C), phase change latent heat is relatively high (120 to 150kJ / kg); undercooling or phase separation is not caused; the energy storage composite building material possesses no toxicity or no corrosivity, and is stable in performance, and high 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 the 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 ambient temperature 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 releases heat when it cond...

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 in the application of energy storage systems, thus reducing the efficiency of the system.