Thermal Performance Evaluation of a Retrofitted Building with Adaptive Composite Energy-Saving Facade Systems

Nurlan Zhangabay (), Arukhan Oner, Murat Rakhimov, Timur Tursunkululy and Uliya Abdikerova ()
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Nurlan Zhangabay: Department of Architecture and Urban Planning, M. Auezov South Kazakhstan University, Tauke Khan Av., 5, Shymkent 160012, Kazakhstan
Arukhan Oner: Department of Building Materials and Technologies, Abylkas Saginov Karaganda Technical University, Nursultan Nazarbayev Av., 56, Karaganda 100000, Kazakhstan
Murat Rakhimov: Department of Building Materials and Technologies, Abylkas Saginov Karaganda Technical University, Nursultan Nazarbayev Av., 56, Karaganda 100000, Kazakhstan
Timur Tursunkululy: Department of Architecture and Urban Planning, M. Auezov South Kazakhstan University, Tauke Khan Av., 5, Shymkent 160012, Kazakhstan
Uliya Abdikerova: Department of Architecture and Construction Production, Korkyt Ata Kyzylorda University, Saparbayev Av., 15, Kyzylorda 120018, Kazakhstan

Energies, 2025, vol. 18, issue 6, 1-25

Abstract: A possible way to solve the problem of energy saving in construction is to introduce energy-efficient buildings at the design stage and, in particular, during retrofit. Therefore, the purpose of this study is to conduct a theoretical analysis of thermal resistance and energy loads on a building in cold climatic conditions. The study of these values was carried out in the ANSYS software package and the Maple computer algebra system, respectively. This study examines four types of structures: the existing facade of a building constructed in 1966, a traditional ventilated facade, and two designs featuring alternating insulation layers with enclosed air channels and with or without heat-reflecting screens in the insulation layer. The results of this study show that the new design incorporating heat-reflecting screens in the insulation layer is 1.15 times more energy-efficient in terms of thermal resistance than the proposed design without such screens. The effectiveness of the proposed new design with heat-reflecting screens in the insulation layer is also confirmed through an analysis of the thermal protection of the building, where the auxiliary indicators, specific characteristics, and complex values of energy efficiency and energy load of the building show greater efficiencies of 1.6, 1.03, and 1.05 times, respectively, compared to the other studied structures. The comprehensive research results presented in this study indicate that the use of energy-efficient wall structures for the retrofit of external enclosures can significantly improve the thermal performance of buildings. It was also determined that the use of such wall structures can significantly enhance the building’s overall energy efficiency rating. The findings of this study highlight that the proposed solutions can contribute to significant energy savings in buildings, while the newly developed structures can serve as valuable additions to the existing catalog of energy-efficient external wall designs.

Keywords: energy efficiency; composite facade structure; airgaps; reflective screens; computational fluid dynamics analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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