Novel dynamic phase change material wall structure

Abstract

The invention discloses a novel dynamic phase change material wall structure which is composed of four layers of materials with different thicknesses, including a gypsum layer, a heat insulation layer, a phase change material (PCM) layer and bricks, and the thickness ranges are 8-30 mm, 40-100 mm, 25-35 mm and 100-120 mm respectively. Wherein the brick layer is located on the outermost side, and the gypsum layer is located on the innermost side. The positions of the phase-change material layer and the heat insulation layer can be changed in the daytime, and the novel phase-change material wall structurally comprises the bricks, the phase-change material layer, the heat insulation layer and the gypsum layer from outside to inside in the daytime; at night, the phase change material layer and the heat insulation layer exchange positions. When the novel phase-change material wall structure works, the phase-change materials on the outer side are subjected to sun irradiation and external temperature influence to melt and absorb heat in the daytime in winter; at night in winter, the phase-change material layer is located on the inner side of the heat insulation layer, when the outside temperature is reduced to the phase-change temperature, the phase-change material layer begins to solidify and releases heat into a room, and therefore the heat preservation effect on the room is achieved in winter.

Description

technical field [0001] The invention relates to the field of building energy saving, in particular to a novel dynamic phase change material wall structure which utilizes external heat sources to save energy in building enclosure walls. Background technique [0002] Thermal energy storage technology is an energy-saving technology that uses phase-change materials to change their physical states and store or recover their latent heat within a small temperature range. Phase change material is a very potential energy storage material. The phase change material can absorb or release energy by changing the state of the material under the condition that the temperature is basically unchanged, and its ability to absorb or release heat is very strong. . Taking the solid-liquid phase transition as an example, when heated to the melting temperature, the phase change material will undergo a phase transition from solid to liquid, absorbing and storing a large amount of latent heat; when ...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a new type of dynamic phase-change material wall structure that uses external heat sources to save energy in the building enclosure, which has the characteristics of intelligence and energy saving, reduces the fluctuation of indoor temperature in the building, and improves the building quality. Comfortable, with high energy efficiency, to solve the traditional winter heating and summer cooling energy consumption, serious pollution problems

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