Thermal and moisture performance of external thermal insulation system with periodic freezing-thawing

Shen, Xinkun; Li, Longjian; Cui, Wenzhi; Feng, Yang

doi:10.1016/j.applthermaleng.2020.115920

Cited by 10 publications

(3 citation statements)

References 28 publications

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“…The structural design of external wall internal and external insulation system is shown in Figure 1. DeST (Designers Simulation Tookit) carries out building model simulation with phased simulation as the core, provides auxiliary reference for actual building design, and has significant advantages in the coupling of building energy consumption simulation and building air conditioning system design [15,16]. DeST simulation software combines the simulated building with the environmental control system by using the natural room temperature, which can accurately describe the thermal characteristics of the building, accurately analyze the natural room temperature of each room in the building and analyze the building energy consumption in combination with the research of air conditioning system [17,18].…”

Section: Building Envelope Model and Impact Sensitivity Analysis 21 E...mentioning

confidence: 99%

Analysis on the Influence of Building Envelope on Building Energy Efficiency in Severe Cold Area

2022

IJM

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With the rapid development of the global economy, the world energy consumption is increasing day by day. Mankind is facing the problem of energy shortage. Energy conservation and emission reduction has become the focus of countries all over the world. In order to study the influence of building envelope on building energy efficiency in severe cold area, the sensitivity analysis is used to analyze the influence relationship between building envelope and building energy efficiency. Combined with DeST simulation software, the building model is established, and the arc mean elasticity method is used to analyze the sensitivity of building energy load to different building envelope parameters. The results show that the external windows of the building envelope have the greatest impact on the building energy efficiency, followed by the external walls, and the roof has the least impact on the energy efficiency. The sensitivity coefficients of the annual cumulative load to the external windows, exterior walls and roofs of buildings are 7.93%, 5.76% and 5.75% respectively. Studying the influence of enclosure structure on building energy efficiency in severe cold areas has important practical value for reducing building energy consumption in severe cold areas and provides data reference for scientifically improving building energy efficiency and building skill transformation in severe cold areas.

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Section: Building Envelope Model and Impact Sensitivity Analysis 21 E...mentioning

confidence: 99%

Analysis on the Influence of Building Envelope on Building Energy Efficiency in Severe Cold Area

2022

IJM

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“…They found that the energy consumption of reinforced concrete in brick buildings was the largest, and the external insulation system with similar heat transfer coefficient but different insulation materials mainly affected the energy consumption of the material production stage. Shen et al (2020) studied the hydrothermal properties of external insulation systems and found that freeze-thaw and temperature drop occurred mainly in the insulation layer. Werder et al (2015) studied the algal resistance of insulation systems, evaluated it by fluorescence and numerical analysis, and found that mineral extraction systems had higher algal resistance than organic systems.…”

Section: Introductionmentioning

confidence: 99%

The partial renovation of old factory buildings - Performance study of the inorganic vitrified micro-bubble external wall insulation system

Ding¹,

Shang

2022

EJSE

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This paper took the partial renovation project of an old factory building in Wuhan as an example to study its external wall insulation system. A new insulation system was designed based on inorganic vitrified micro-bubbles. The material was briefly analyzed. The performance of the new insulation system was detected by designing test specimens. The results found that the specimens had good compressive, tensile and flexural properties, reaching the standard of A1 grade of construction materials, the specimens were non-combustible, and the temperature change of the concrete base was stable under the action of heating-cooling and heating-rain cycles, suggesting good thermal insulation performance. The results verify the effectiveness of the insulation system. The insulation system can be better applied in practice.

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“…The most common way how to reduce the energy demands for heating of older buildings is application of the External Thermal Insulation Composite Systems (ETICS). This solution enables to effectively insulate the whole envelope of the building and reduce thermal bridges that would negatively affect the overall building’s hygrothermal performance [ 5 , 6 , 7 ]. However, in the case of older and historical buildings, application of ETICS is often forbidden especially due to the requirements of culture heritage authorities that insist on the preservation of the original and decorative appearance of the architectural style of facades and their elements, such as balusters, on brackets balconies, ornamental brackets, pillars and pilasters, gables, etc.…”

Section: Introductionmentioning

confidence: 99%

Lightweight Vapor-Permeable Plasters for Building Repair Detailed Experimental Analysis of the Functional Properties

et al. 2021

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Three types of lightweight plasters for building repair were prepared and tested. The composition of plasters was designed in respect to their compatibility with materials used in the past in historical masonry. For the hardened plasters, detailed testing of microstructural and macrostructural parameters was realized together with the broad experimental campaign focused on the assessment of mechanical, hygric, and thermal properties. As the researched plasters should find use in salt-laden masonry, specific attention was paid to the testing of their durability against salt crystallization. The mechanical resistance, porosity, water vapor transmission properties, and water transport parameters of all the researched plasters safely met criteria of WTA directive 2-9-04/D and standard EN 998-1 imposed on repair mortars. Moreover, the tested materials were ranked as lightweight plasters and due to their low thermal conductivity they can be used for the improvement of thermal performance of repaired masonry. The salt crystallization test caused little or no damage of the plasters, which was due to their high porosity that provided free space for salt crystallization. The developed plasters can be recommended for application in repair of damp and salt masonry and due to their compatible composition also in historical, culture heritage buildings. The added value of plasters is also their good thermal insulation performance.

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Thermal and moisture performance of external thermal insulation system with periodic freezing-thawing

Cited by 10 publications

References 28 publications

Analysis on the Influence of Building Envelope on Building Energy Efficiency in Severe Cold Area

Analysis on the Influence of Building Envelope on Building Energy Efficiency in Severe Cold Area

The partial renovation of old factory buildings - Performance study of the inorganic vitrified micro-bubble external wall insulation system

Lightweight Vapor-Permeable Plasters for Building Repair Detailed Experimental Analysis of the Functional Properties

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