SUBSTANTIATION OF DESIGN MEASURES TO INCREASE ENERGY EFFICIENCY OF EXTERIOR WALLS

Vestnik MGSU 11/2017 Volume 12
  • Musorina Tat'yana Aleksandrovna - Peter the Great St. Petersburg Polytechnic University (SPbPU) postgraduate student, Hydraulics and Strength Department, Civil Engineering Institute, Peter the Great St. Petersburg Polytechnic University (SPbPU), 29 Politechnicheskaya str., St. Petersburg, 195251, Russian Federation.
  • Gamayunova Ol'ga Sergeevna - Peter the Great St. Petersburg Polytechnic University (SPbPU) senior lecturer, Department of Construction of Unique Buildings and Structures, Civil Engineering Institute, Peter the Great St. Petersburg Polytechnic University (SPbPU), 29 Politechnicheskaya str., St. Petersburg, 195251, Russian Federation.
  • Petrichenko Mikhail Romanovich - Peter the Great St. Petersburg Polytechnic University (SPbPU) Doctor of Technical Sciences, Professor, Head of the Hydraulics and Strength Department, Peter the Great St. Petersburg Polytechnic University (SPbPU), 29 Politechnicheskaya str., St. Petersburg, 195251, Russian Federation.

Pages 1269-1277

Subject: multi-layer building envelope is the subject of the paper. Recently, in the context of energy conservation policies, the heat engineering requirements for enveloping structures of buildings and structures have significantly increased. At the same time, their moisture condition has a significant impact on the operational properties of materials of structures and on microclimate of rooms constrained by these structures. Research objectives: emphasize importance of the task of predicting the temperature and moisture condition of the walling at the stage of design and construction of building envelopes. In this paper, the temperature distributions in layered walls are analyzed. Materials and methods: to achieve the objectives, computational and experimental studies are conducted. By alternating (rearranging) layers and preserving the thermal resistance of the wall on the whole, we find the optimal alternation of layers that minimizes deviation of the maximum wall temperature from the average temperature. Results: for the optimal location of layers in the wall’s structure, the moisture penetration into the wall is minimal or absent altogether. This is possible if the heat-insulating layer is mounted on the outer surface of the structure. Conclusions: the obtained results of computational and experimental studies allow us to verify appropriateness of accounting for alternation of layers in multilayer structures. These calculations proved that the higher the average temperature level, the more energy-efficient the structure will be.

DOI: 10.22227/1997-0935.2017.11.1269-1277

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