Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building
Thermal refurbishment of buildings results in certain energy, financial, and environmental effects. Such investments are financially supported in Poland after meeting the legally defined conditions of thermal protection and energy consumption. This paper presents a complex thermal modernization of a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-04-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/7/1973 |
| _version_ | 1797538941710106624 |
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| author | Piotr Michalak Krzysztof Szczotka Jakub Szymiczek |
| author_facet | Piotr Michalak Krzysztof Szczotka Jakub Szymiczek |
| author_sort | Piotr Michalak |
| collection | DOAJ |
| description | Thermal refurbishment of buildings results in certain energy, financial, and environmental effects. Such investments are financially supported in Poland after meeting the legally defined conditions of thermal protection and energy consumption. This paper presents a complex thermal modernization of a school building, performed by following Polish regulations. A detailed description of the studied object was given, and the calculation procedure was described. Then an optimal variant of an investment and an ex-post analysis were described. Simple payback time (SPBT) of modernization measures was from 15.8 years (insulation of the ceiling under the unheated attic) to 87 years for insulation of the wooden external wall, with 35.6 years for the whole project, which is shorter than the predicted lifespan of the whole building (50–70 years). Annual calculated heating demand decreased from 464.78 to 168.73 GJ, resulting in the primary energy consumption indicator (EP) of 484.44 and 129.46 kWh/m<sup>2</sup>, respectively. Thermal refurbishment with the replacement of an old boiler into a new wood-pellet one resulted in a significant reduction of SO<sub>2</sub> and dust emissions from 451 to 27.5 kg and from 399 to 13 kg, respectively. |
| first_indexed | 2024-03-10T12:38:20Z |
| format | Article |
| id | doaj.art-139b1b765d964744831c2f8558fb1046 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T12:38:20Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-139b1b765d964744831c2f8558fb10462023-11-21T14:02:43ZengMDPI AGEnergies1996-10732021-04-01147197310.3390/en14071973Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School BuildingPiotr Michalak0Krzysztof Szczotka1Jakub Szymiczek2Department of Power Systems and Environmental Protection Facilities, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, PolandDepartment of Power Systems and Environmental Protection Facilities, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, PolandDepartment of Power Systems and Environmental Protection Facilities, Faculty of Mechanical Engineering and Robotics, AGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, PolandThermal refurbishment of buildings results in certain energy, financial, and environmental effects. Such investments are financially supported in Poland after meeting the legally defined conditions of thermal protection and energy consumption. This paper presents a complex thermal modernization of a school building, performed by following Polish regulations. A detailed description of the studied object was given, and the calculation procedure was described. Then an optimal variant of an investment and an ex-post analysis were described. Simple payback time (SPBT) of modernization measures was from 15.8 years (insulation of the ceiling under the unheated attic) to 87 years for insulation of the wooden external wall, with 35.6 years for the whole project, which is shorter than the predicted lifespan of the whole building (50–70 years). Annual calculated heating demand decreased from 464.78 to 168.73 GJ, resulting in the primary energy consumption indicator (EP) of 484.44 and 129.46 kWh/m<sup>2</sup>, respectively. Thermal refurbishment with the replacement of an old boiler into a new wood-pellet one resulted in a significant reduction of SO<sub>2</sub> and dust emissions from 451 to 27.5 kg and from 399 to 13 kg, respectively.https://www.mdpi.com/1996-1073/14/7/1973thermal modernizationenergy auditSPBTlifespanprimary energyusable energy |
| spellingShingle | Piotr Michalak Krzysztof Szczotka Jakub Szymiczek Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building Energies thermal modernization energy audit SPBT lifespan primary energy usable energy |
| title | Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building |
| title_full | Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building |
| title_fullStr | Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building |
| title_full_unstemmed | Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building |
| title_short | Energy Effectiveness or Economic Profitability? A Case Study of Thermal Modernization of a School Building |
| title_sort | energy effectiveness or economic profitability a case study of thermal modernization of a school building |
| topic | thermal modernization energy audit SPBT lifespan primary energy usable energy |
| url | https://www.mdpi.com/1996-1073/14/7/1973 |
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