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Energy and Economic Efficiency of the Thermomodernization of an Educational Building and Reduction of Pollutant Emissions—A Case Study

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  • Beata Sadowska

    (Department of Energy Efficient Construction and Geodesy, Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska 45E Street, 15-351 Bialystok, Poland)

  • Joanna Piotrowska-Woroniak

    (HVAC Department, Bialystok University of Technology, Wiejska 45E, 15-351 Bialystok, Poland)

  • Grzegorz Woroniak

    (HVAC Department, Bialystok University of Technology, Wiejska 45E, 15-351 Bialystok, Poland)

  • Wiesław Sarosiek

    (National Energy Conservation Agency, Świętokrzyska 20, 00-002 Warsaw, Poland)

Abstract

The study presents an investigation of thermal energy consumption for heating in an educational building located in the north-eastern part of Poland in 2017–2020, after deep thermomodernization. An evaluation of the actual energy effects was made based on measurements carried out over a 4-year operational period. They were compared with the results of theoretical calculations included in the energy audit and an attempt was made to describe the reasons for the discrepancies. The planned and achieved economic efficiency indicators were assessed and the amount of reduction of pollutant emissions was determined. The performed analysis allowed for an assessment of the impact of deep thermomodernization in terms of reducing heat energy consumption for central heating purposes, as well as reducing greenhouse gas emissions such as CO 2 , SO x , NO x and benzo(a)pyrene to the atmosphere. The implementation of thermomodernization in buildings led to savings of about 43% in terms of heat energy consumption for heating and a reduction in pollutant emissions. The theoretical savings based on the audit were 50.4%. The obtained results show that deep thermomodernization contributes to the improvement of energy and ecological efficiency in educational buildings, however, without the possibility of using subsidies, the investment is unprofitable. All the obtained results were discussed with the available literature sources and have been summarized with appropriate conclusions.

Suggested Citation

  • Beata Sadowska & Joanna Piotrowska-Woroniak & Grzegorz Woroniak & Wiesław Sarosiek, 2022. "Energy and Economic Efficiency of the Thermomodernization of an Educational Building and Reduction of Pollutant Emissions—A Case Study," Energies, MDPI, vol. 15(8), pages 1-31, April.
    • Handle: RePEc:gam:jeners:v:15:y:2022:i:8:p:2886-:d:794162
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    References listed on IDEAS

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    1. Beata Sadowska & Piotr Bieranowski, 2021. "Efficiency of Different Balcony Slab Modernization Method in Retrofitted Multi-Family Buildings," Energies, MDPI, vol. 14(20), pages 1-28, October.
    2. Rafał Blazy & Jakub Błachut & Agnieszka Ciepiela & Rita Łabuz & Renata Papież, 2021. "Thermal Modernization Cost and the Potential Ecological Effect—Scenario Analysis for Thermal Modernization in Southern Poland," Energies, MDPI, vol. 14(8), pages 1-16, April.
    3. Joanna Piotrowska-Woroniak, 2021. "Determination of the Selected Wells Operational Power with Borehole Heat Exchangers Operating in Real Conditions, Based on Experimental Tests," Energies, MDPI, vol. 14(9), pages 1-21, April.
    4. Piotr Michalak & Krzysztof Szczotka & Jakub Szymiczek, 2021. "Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building," Energies, MDPI, vol. 14(7), pages 1-21, April.
    5. Joanna Piotrowska-Woroniak, 2021. "Assessment of Ground Regeneration around Borehole Heat Exchangers between Heating Seasons in Cold Climates: A Case Study in Bialystok (NE, Poland)," Energies, MDPI, vol. 14(16), pages 1-32, August.
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    Cited by:

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    2. Ming-Qiang Huang & Rui-Juan Lin, 2022. "Evolutionary Game Analysis of Energy-Saving Renovations of Existing Rural Residential Buildings from the Perspective of Stakeholders," Sustainability, MDPI, vol. 14(9), pages 1-20, May.
    3. 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.
    4. Joanna Piotrowska-Woroniak & Tomasz Szul, 2022. "Application of a Model Based on Rough Set Theory (RST) to Estimate the Energy Efficiency of Public Buildings," Energies, MDPI, vol. 15(23), pages 1-13, November.
    5. Kusnandar & Indra Permana & Weiming Chiang & Fujen Wang & Changyu Liou, 2022. "Energy Consumption Analysis for Coupling Air Conditioners and Cold Storage Showcase Equipment in a Convenience Store," Energies, MDPI, vol. 15(13), pages 1-13, July.
    6. Krzysztof Szczotka & Anna Barwińska-Małajowicz & Jakub Szymiczek & Radosław Pyrek, 2023. "Thermomodernization as a Mechanism for Improving Energy Efficiency and Reducing Emissions of Pollutants into the Atmosphere in a Public Utility Building," Energies, MDPI, vol. 16(13), pages 1-24, June.
    7. Barnaś, Krzysztof & Jeleński, Tomasz & Nowak-Ocłoń, Marzena & Racoń-Leja, Kinga & Radziszewska-Zielina, Elżbieta & Szewczyk, Bartłomiej & Śladowski, Grzegorz & Toś, Cezary & Varbanov, Petar Sabev, 2023. "Algorithm for the comprehensive thermal retrofit of housing stock aided by renewable energy supply: A sustainable case for Krakow," Energy, Elsevier, vol. 263(PD).

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