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Statistical Analysis of the Variability of Energy Efficiency Indicators for a Multi-Family Residential Building

Author

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  • Anna Życzyńska

    (Faculty of Civil Engineering and Architecture, Lublin University of Technology, 40 Nadbystrzycka Str., 20-618 Lublin, Poland)

  • Zbigniew Suchorab

    (Faculty of Environmental Engineering, Lublin University of Technology, 40B Nadbystrzycka Str., 20-618 Lublin, Poland)

  • Dariusz Majerek

    (Faculty of Fundamentals of Technology, Lublin University of Technology, 38 Nadbystrzycka Str., 20-618 Lublin, Poland)

  • Violeta Motuzienė

    (Department of Building Energetics, Vilnius Gediminas Technical University, 11 Saulėtekio Str., 10223 Vilnius, Lithuania)

Abstract

During the building design phase, a lot of attention is paid to the thermal properties of the external envelopes. New regulations are introduced to improve energy efficiency of a building and impose a reduction of the overall heat transfer coefficient; meanwhile, this efficiency is more influenced by the efficiency of the heating system and the type of fuels used. This article presents a complex analysis including the impact of: heat transfer coefficient of the envelope, efficiency of building service systems, the type of energy source, and the fuel. The analysis was based on the results of simulation tests obtained for an exemplary multi-family residential building located in Poland that is not equipped with a cooling system. The conducted calculations gave quantitative evaluation of the influence of particular parameters on building energy performance and showed that the decrease of heat transfer coefficient of building boundaries, in accordance to the Polish regulation for 2017 and 2021, gave only 11% of reduction on usable energy demand index. On the other hand, it was found that modification of the heating system and heat source can significantly influence the values of the final and primary energy consumption at the level of 70%. The application of heat pumps has a greater influence on the final and primary energy consumption for heating indices than other parameters, such as the building’s envelopes.

Suggested Citation

  • Anna Życzyńska & Zbigniew Suchorab & Dariusz Majerek & Violeta Motuzienė, 2022. "Statistical Analysis of the Variability of Energy Efficiency Indicators for a Multi-Family Residential Building," Energies, MDPI, vol. 15(14), pages 1-14, July.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:14:p:5042-:d:859794
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    References listed on IDEAS

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    5. Anna Życzyńska & Zbigniew Suchorab & Dariusz Majerek, 2020. "Influence of Thermal Retrofitting on Annual Energy Demand for Heating in Multi-Family Buildings," Energies, MDPI, vol. 13(18), pages 1-19, September.
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    Cited by:

    1. Piotr Michalak & Krzysztof Szczotka & Jakub Szymiczek, 2023. "Audit-Based Energy Performance Analysis of Multifamily Buildings in South-East Poland," Energies, MDPI, vol. 16(12), pages 1-21, June.

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