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A New Approach to the Economic Evaluation of Thermomodernization: Annual Assessment Based on the Example of Production Space

Author

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  • Orest Voznyak

    (Department of Heat, Gas Supply and Ventilation, Lviv Polytechnic National University, St. Bandery, 12, 79013 Lviv, Ukraine)

  • Edyta Dudkiewicz

    (Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland)

  • Marta Laska

    (Faculty of Environmental Engineering, Wroclaw University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wroclaw, Poland)

  • Ievgen Antypov

    (Heat and Power Engineering Department, Education and Research Institute of Energetics, Automation and Energy Efficiency, National University of Life and Environmental Sciences of Ukraine, Heroiv Oborony 12, 03041 Kyiv, Ukraine)

  • Nadiia Spodyniuk

    (Heat and Power Engineering Department, Education and Research Institute of Energetics, Automation and Energy Efficiency, National University of Life and Environmental Sciences of Ukraine, Heroiv Oborony 12, 03041 Kyiv, Ukraine)

  • Iryna Sukholova

    (Department of Heat, Gas Supply and Ventilation, Lviv Polytechnic National University, St. Bandery, 12, 79013 Lviv, Ukraine)

  • Olena Savchenko

    (Department of Heat, Gas Supply and Ventilation, Lviv Polytechnic National University, St. Bandery, 12, 79013 Lviv, Ukraine)

Abstract

Energy and economic assessments are of great relevance in the context of decision processes for the most optimal solutions for building renovations. Following the method recommended by UNIDO, economic analyses of thermal modernization options are carried out based on the Simple Payback Time (SPBT), Net Present Value Ratio (NPVR) and Internal Rate of Return (IRR) indices. Incorporating these indicators and a new approach that involves aggregating thermomodernization activities not only in the cold and warm seasons separately, but throughout the whole year, an economic evaluation of the thermomodernization of a production space was carried out. In this case study, the renovation options included wall insulation, window replacement, the installation of infrared heater, a two-flow air diffuser (TFAD) and variable air volume. The economic effect indicated by the highest NPVR over a normative period of 15 years was obtained for the installation of an infrared heater and a TFAD with a variable mode ventilation system. The SPBT for this case was also the lowest.

Suggested Citation

  • Orest Voznyak & Edyta Dudkiewicz & Marta Laska & Ievgen Antypov & Nadiia Spodyniuk & Iryna Sukholova & Olena Savchenko, 2024. "A New Approach to the Economic Evaluation of Thermomodernization: Annual Assessment Based on the Example of Production Space," Energies, MDPI, vol. 17(9), pages 1-20, April.
    • Handle: RePEc:gam:jeners:v:17:y:2024:i:9:p:2105-:d:1384840
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    References listed on IDEAS

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