Novel phase change-heat preservation composite wall structure

Abstract

The invention relates to a novel phase change and heat insulation composite wall structure, which is applied to the heat insulation of a wall and mainly comprises a heat insulation layer, a figurate phase change layer and a wall base body to form an integrative composite structure. The heat transmission resistance of the composite wall structure can be evaluated according to the material and the thickness of the wall base body so as to figure out the material thickness of the heat insulation layer and ensure that the heat transmission resistance of the wall base body is equal to that of the heat insulation layer, so that the despicking delay effect of the phase change layer to the temperature variation is improved to the utmost extent. The composite wall structure gives full play to the heat insulation effect of the heat insulation layer and the heat storage and temperature regulation effect of the phase change layer to improve the thermal inertia of the wall body greatly. The composite wall structure has stable performance and is convenient in construction and energy-saving reconstruction of old buildings to achieve the effects of high efficiency and environmental protection.

Description

1. Technical field [0001] The invention belongs to building energy saving, and relates to a novel thermal insulation wall structure, which is used in the field of wall thermal insulation. 2. Background technology [0002] Under the premise of sustainable development, how to reduce building energy consumption and maximize the comfort of the living environment is the current research focus in the field of building energy conservation. Phase change materials can use heat absorption and heat release during the phase change process to store potential energy, and can maintain a constant temperature during the phase change process. The use of phase change materials in wall structures can improve their thermal inertia, reduce indoor temperature fluctuations, improve living comfort, and reduce air-conditioning energy consumption. [0003] At present, the combination of phase change material and wall matrix mainly includes hybrid type and component type. The hybrid type mainly includ...

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Problems solved by technology

[0004] There are mainly the following problems in the hybrid type: 1. The phase change material gradually leaks from the matrix and volume deformation during the recycling process; 2. The addition of the phase change material reduces the strength of the matrix material; 3. Impregnating or directly adding and mixing cannot To ensure the uniformity of the phase change material, the multi-dimensional heat transfer phenomenon of randomly mixed phase change material particles affects the efficiency of phase change energy storage; 4. It cannot be used for energy-saving renovation of walls of old buildings

At present, there are a large number of practical patents, such as "a kind of thermal insulation wall material containing phase change material" designed by Zou Liming and others, and the "energy storage wall" designed by Ren Shengyi and others. The combination of two methods, but only using phase change materials alone to adjust temperature, without combining external wall insulation technology to further improve building energy efficiency. Although the "phase change composite thermal insulation board" invented by Li Dong combined external wall insulation technology, it did not consider the relative The optimal way and position of variable material layer compounding and the optimal thickness of insulation layer

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