Phase change heat insulation composite hollow building block

Abstract

The invention belongs to the technical field of building materials and provides a phase change heat insulation composite hollow building block. Three rows of mutually staggered holes are formed in a building block body in total, and the holes in the row near the indoor side are blind holes and are used for filling a gypsum-based phase change material; and the holes in the other two rows are through holes, thereby forming air spaces inserted with heat insulation material plates at middle parts. According to the phase change heat insulation composite hollow building block provided by the invention, by reasonably selecting a hole structure, the mechanical properties of the composite hollow building block can be ensured, and heat insulation, heat isolation and heat accumulation performances of the building block can be also improved to a greatest extent; the prepared gypsum-based phase change material is less prone to causing leakage of the filled phase change material, has good compatibility with the material of the building block main body, and is used for solving the problem that the heat capacity of a wall body built by traditional hollow building blocks is reduced due to improved heat insulation performance; and furthermore, by reasonably selecting the phase change material with great phase change latent heat and appropriate heat conduction coefficient against climatic conditions in different regions, the best performance of the phase change material is realized, so that indoor heat comfort is improved and the energy consumption of a building is reduced.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a phase-change thermal insulation 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 o...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a phase-change thermal insulation 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 the thermal insulation performance, and to solve the problem of the existing phase-change materials. 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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