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<p>The temperature-stress state of the concrete facade wall with a window opening, which is the external enclosing structure of the room with a steel heating device, was investigated by the method of numerical modeling. Estimated studies were performed for winter period when the heating system of the building is functioning. According to the results of solving the system of equations of thermal stress and equation of thermal conductivity, the temperature distribution over the wall volume and distribution of normal and tangential stresses were determined. Areas of the wall where these stresses are maximum were identified. The research was performed for cases of both, absence and presence of a heat-insulating layer on the outer surface of the facade wall. From comparison of the results obtained for these two options, it follows that the external thermal insulation coating not only helps to reduce dissipative heat loss through the facade wall, but also reduces the absolute values of stresses in the concrete wall arising resulting from temperature deformations. In some cases, the sign of stresses changes from stretching (wall without external insulation) to compressive (wall with insulation).</p>
</abstract>

The temperature-stress state of the concrete facade wall with a window opening, which is the external enclosing structure of the room with a steel heating device, was investigated by the method of numerical modeling. Estimated studies were performed for winter period when the heating system of the building is functioning. According to the results of solving the system of equations of thermal stress and equation of thermal conductivity, the temperature distribution over the wall volume and distribution of normal and tangential stresses were determined. Areas of the wall where these stresses are maximum were identified. The research was performed for cases of both, absence and presence of a heat-insulating layer on the outer surface of the facade wall. From comparison of the results obtained for these two options, it follows that the external thermal insulation coating not only helps to reduce dissipative heat loss through the facade wall, but also reduces the absolute values of stresses in the concrete wall arising resulting from temperature deformations. In some cases, the sign of stresses changes from stretching (wall without external insulation) to compressive (wall with insulation).

Influence of the heat insulation layer on the thermally stressed condition of the facade wall

Department of thermophysical basics of energy-saving technologies Institute of Engineering Thermophysics of National Academy of Sciences of Ukraine

Department of Building Physics and Renewable Energy Kielce University of Technology

Production Engineering Archives

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

The temperature-stress state of the concrete facade wall with a window opening, which is the external enclosing structure of the room with a steel heating...

Influence of the heat insulation layer on the thermally stressed condition of the facade wall

Published Online: May 19, 2022

Page range: 123 - 131

Received: Sep 08, 2021

Accepted: Dec 28, 2021

DOI: https://doi.org/10.30657/pea.2022.28.14

Keywords
temperature stress, concrete facade wall, heating system, numerical modeling, heat-insulating layer

© 2022 Borys Basok et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

Influence of the heat insulation layer on the thermally stressed condition of the facade wall

Published Online: May 19, 2022

Page range: 123 - 131

Received: Sep 08, 2021

Accepted: Dec 28, 2021

DOI: https://doi.org/10.30657/pea.2022.28.14

Keywordstemperature stress, concrete facade wall, heating system, numerical modeling, heat-insulating layer

© 2022 Borys Basok et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-ShareAlike 4.0 International License.

Keywords
temperature stress, concrete facade wall, heating system, numerical modeling, heat-insulating layer