Impact of internal insulation on the hygrothermal performance of brick wall

Orlik-Kożdoń, Bożena; Steidl, Tomasz

doi:10.1177/1744259116671322

Cited by 18 publications

(16 citation statements)

References 5 publications

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“…Generally, it means the moisture contained in the walls is higher when compared to masonry with exterior thermal insulation. Such a finding was reported, e.g., by Orlik-Kożdoń and Steidl [52] who investigated the impact of interior thermal insulation on the hygrothermal performance of a brick wall. Using EPS as the insulation material, they reported the average monthly values of relative humidity to be between 65% and 78%, depending on the month.…”

Section: Resultssupporting

confidence: 63%

Computational Prediction of Susceptibility to Biofilms Growth: Two-Dimensional Analysis of Critical Construction Details

Kočí

Maděra

et al. 2020

Energies

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Retrofitting of historical and traditional buildings is an effective thermal protection measure. The presence of thermal insulation in the composition of building envelopes might, however, bring some shortages due to a decrease of exterior surface temperatures or possible water vapor condensation. These shortages can improve living conditions for various microorganisms on the exterior surfaces, especially in the case of interior thermal insulation systems that are typical with thermal bridges and thus supply the surface with heat to a greater extent. This paper, therefore, aims at the investigation of hygrothermal conditions in selected critical construction details and evaluates the results from the point of view of potential biofilms growth. Two-dimensional modeling of coupled heat and moisture is applied and the hygrothermal patterns are evaluated based on an adjusted isopleth growth model. The results showed that the duration of favorable conditions for biofilms growth is relatively low, accounting for less than 180 h in the worst-case scenario. It means the exterior surfaces of historical buildings provided with interior thermal insulation systems are not threatened by biofilms growth. Anyway, other negative aspects have been revealed that should be treated individually. Possible wood decay or increased hygrothermal straining are the typical examples in that respect.

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Section: Resultssupporting

confidence: 63%

Computational Prediction of Susceptibility to Biofilms Growth: Two-Dimensional Analysis of Critical Construction Details

Kočí

Maděra

et al. 2020

Energies

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“…In building envelope insulation systems, we very often apply such insulation materials as expanded polystyrene (EPS) and extruded polystyrene (XPS) [3], or their modifications [4][5][6][7]. Such systems can be used on building envelopes as insulation from the inside, which is often applied in buildings having historical character [8]. When using EPS as insulation from the inside, we consider, among others, the problems of the thermal accumulation of building envelopes, which have impact on their energy performance [9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Studies Involving the Impact of Solar Radiation on the Properties of Expanded Graphite Polystyrene

Krause¹,

Nowoświat²

2019

Energies

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This article presents the research studies aimed at identifying the behavior of expanded polystyrene with the addition of graphite in the conditions of exposure to solar radiation. For this purpose, a series of in situ tests and laboratory studies were carried out. Three types of material were tested, i.e. expanded polystyrene (EPS) (white polystyrene), polystyrene with the addition of graphite (gray polystyrene) and two-layer polystyrene (gray bottom layer and white top layer). Temperature distributions on the surfaces of the panels in field and laboratory conditions were determined. The distributions of temperature were recorded at varied wind impact (field conditions and laboratory conditions) and at varied impact of solar radiation (laboratory conditions). Based on the conducted experiments, differences in temperature distribution on the surfaces of the tested panels were determined. In addition, geometric changes and deformation levels of the tested white and gray expanded polystyrene panels exposed to artificial sun radiation were determined in laboratory conditions.

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“…in Poland for the modernization of thermal insulation of historical objects. The pros and cons of such a solution can be found in the work [24]. In the present paper the authors described a considerable drop of thermal mass of the wall with the internal thermal insulation as compared to the solution with external thermal insulation.…”

Section: Discussionmentioning

confidence: 65%

The Influence of Thermal Mass on the Cooling off Process of Buildings

Nowoświat

Pokorska-Silva

2017

Period. Polytech. Civil Eng.

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In the paper the authors have investigated the influence of thermal mass of the building envelope on the alignment of temperatures between the external and internal environments without IntroductionThermal mass of the envelope is to be understood as its heat capacity. It means that the envelope with large thermal mass needs to absorb a lot of heat energy before the temperature on the surface of the envelope changes. And the envelope of small thermal mass reaches the surrounding temperature reasonably fast. The impact of heat retention rate on the thermal load of the zones ventilated by night in the climate of China was investigated in the work [1]. The works on thermal comfort had been already carried out for many years. In the publication [2], the authors were considering thermal inertia in terms of the experienced thermal comfort, and more specifically, the impact of thermal inertia on the total thermal load of the system. The investigation studies were carried out with the application of numerical analyses, using the Fourier equation.Many works involve also the impact of temperature distribution in the room on thermal comfort. Such research works were carried out among others in the work [3]. The authors demonstrated that thermal comfort of rooms depends on the temperature of the outdoor environment. They also divided the rooms into thermal comfort zones, and they determined the minimum and maximum temperatures for thermal comfort. Research studies involving the influence of temperature loss of the room as a time function on energy savings have been carried out worldwide. Even the most recent literature is still occupied with this problem [4]. It is also quite significant in terms of energy savings in the building engineering industry to understand the role of heat accumulation of the envelope. The consumption of heating, cooling or ventilation energy is still rising, and therefore the systems of energy storage are becoming more and more apparent for researchers. In the work [5] the researchers found out that in the areas of high temperature difference between day and night, thermal insulation mounted on the external surface of the envelope yields better results than that mounted on the internal surface. As they explained, it was caused by a different heat accumulation of the envelope with external insulation than that with the internal one. The subject of heat accumulation of the envelopes and its influence on energy efficiency of buildings has been undertaken by many

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Impact of internal insulation on the hygrothermal performance of brick wall

Cited by 18 publications

References 5 publications

Computational Prediction of Susceptibility to Biofilms Growth: Two-Dimensional Analysis of Critical Construction Details

Computational Prediction of Susceptibility to Biofilms Growth: Two-Dimensional Analysis of Critical Construction Details

Experimental Studies Involving the Impact of Solar Radiation on the Properties of Expanded Graphite Polystyrene

The Influence of Thermal Mass on the Cooling off Process of Buildings

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