A building exterior wall structure with double-layer stereotyped phase-change material layers

Abstract

The invention discloses a building outer wall structure with double shaping phase change material layers. The building outer wall structure sequentially comprises the outer shaping phase change wall board layer, a first thermal insulation layer, a wall body layer, a second thermal insulation layer, the inner shaping phase change wall board layer from outside to inside, wherein the outer shaping phase change wall board layer and the inner shaping phase change wall board layer are respectively made of phase change materials of phase change temperatures of Tm1 and Tm2, the phase change temperature Tm1 is set to be minimum in cold load all year round in the expositing environment of the phase change temperature Tm1, and the solid phase change materials melt into liquid phase change materials when the wall board layer temperature is equal to or higher than Tm1; the phase change temperature Tm2 is set to be minimum in heat load all year round in the exposing environment of the phase change temperature Tm2, and the solid phase change materials melt into liquid phase change materials when the wall board layer temperature is equal to or higher than Tm2. The invention further designs the components and proportion of the phase change materials of the two shaping phase change wall board layers. By the building outer wall structure which is compact, high in adaptability, convenient to manufacture and maintain later, and the like, outer wall cold load and heat load can be lowered effectively, and overall energy consumption is lowered evidently.

Description

technical field [0001] The invention belongs to the related field of passive energy-saving building equipment, and more specifically relates to a building exterior wall structure with double-layer shaped phase-change material layers. Background technique [0002] Today, as energy saving and emission reduction are increasingly concerned, building exterior wall insulation technology has been widely used. Although it can reduce the energy consumption of building operation to a certain extent, due to the limited heat capacity of the insulation material itself, it cannot fully store energy, thus limiting the potential of building energy saving. To this end, a lightweight phase-change enclosure structure with a high heat capacity can be used to correspondingly improve indoor comfort, reduce building operation energy consumption, and at the same time alleviate peak power shortages. [0003] The commonly used phase change materials (Phase Change Material, PCM) in the field of build...

AI Technical Summary

Problems solved by technology

[0004] However, further studies have shown that the research and application of shaped phase change materials in buildings in the prior art are mostly single-layer, and most of them use a shaped phase change material plate to make phase change walls and phase change floors. Or phase-change roof, for buildings that need cooling and heating throughout the year, this form cannot improve the thermal characteristics of the envelope throughout the year; another part of the research application is to use two stereotyped phase-change material panels, which are located in the On the envelope structures with different orientations, the two phase change materials can function in winter and summer respectively, but this form requires a large area of ​​the envelope structure. For existing buildings or rooms with only one outer wall, practicality is limited

Images