Phase-change-material composite hollow building block

Abstract

The invention belongs to the technical field of building materials and discloses a phase-change-material composite hollow building block. A building block body is made from light aggregate concrete; five rows of mutually-staggered holes are formed inside the building block, and each row of holes consists of a relatively long hole and a relatively short hole; the holes of one row close to the indoor side are blind holes and are used for being filled with gypsum-based phase-change materials, and the holes of the other four rows are through holes and are air interlayers. According to the phase-change-material composite hollow building block, through reasonably selecting a hole type structure, the mechanical properties of the composite hollow building block are guaranteed, and the heat preservation, heat insulation and heat accumulation properties of the building block can be improved; due to the prepared gypsum-based phase-change materials, the filled phase-change materials are not prone to leaking and have good compatibility with a building block main body material, so that the problem of the traditional hollow building blocks that the heat capacity of a wall body is lowered while the heat preservation property is improved is solved; aiming at climatic conditions of different regions, the phase-change materials with large phase-change latent heat and appropriate coefficient of heat conductivity are reasonably selected, so as to exert the optimal performance of the phase-change materials, so that the indoor heat comfort is improved, and the energy consumption of buildings is lowered.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a phase change material composite hollow block. Background technique [0002] Due to thermal resistance and thermal capacitance, temperature waves and heat flow waves will attenuate and delay when passing through the building envelope. At present, the building envelope usually uses traditional organic thermal insulation materials to meet the requirements of building energy-saving codes for the thermal resistance of the envelope. Although these insulating materials have low thermal conductivity values, which can effectively increase the thermal resistance of the building envelope, most of them have safety hazards, limited service life, and low thermal capacity values. The current buildings adopt a large number of frame structures. The walls of this structure are called filled walls. Most of them are hollow, light or medium-weight walls, and most of them are...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a phase change material composite hollow block to solve the problem of the reduction of the heat capacity of the external wall of the building and the lack of mechanical properties of the traditional lightweight concrete hollow block due to the improvement of thermal insulation performance, and to solve the problem of the existing phase change material. Unreasonable factors in the configuration and material use of composite hollow blocks lead to problems such as lower thermal resistance of composite blocks and poor thermal performance, so as to improve the thermal comfort of the building interior and reduce the overall energy consumption of the building.

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