Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings
Various methods can be used to reduce energy consumption in buildings. One of them is the tightening of energy requirements, which, like other methods, cannot result in a worsening of the indoor environmental quality. The article presents a study on the impact of changes in the thermal insulation of...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/14/1/56 |
| _version_ | 1797543550055874560 |
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| author | Walery Jezierski Beata Sadowska Krzysztof Pawłowski |
| author_facet | Walery Jezierski Beata Sadowska Krzysztof Pawłowski |
| author_sort | Walery Jezierski |
| collection | DOAJ |
| description | Various methods can be used to reduce energy consumption in buildings. One of them is the tightening of energy requirements, which, like other methods, cannot result in a worsening of the indoor environmental quality. The article presents a study on the impact of changes in the thermal insulation of the building envelope on the energy demand, heating costs, and emissions. Mathematical models of the dependence of the index of annual usable energy demand for heating (<i>EU<sub>H</sub></i>) of a residential house on the thermal transmittance coefficients (<i>U<sub>i</sub></i>) of selected building elements were developed. Values of <i>U<sub>i</sub></i> were adopted at three levels, corresponding to the maximum required values—as approved in Polish law for the periods from 2014, 2017, and 2021. The analyses were conducted for the location of the building in three of the five climate zones of Poland. It turned out that the differences in the energy demand in various locations in Poland amount to 32.6%. The change in <i>U<sub>i</sub></i> in the analyzed period causes a decrease of <i>EU<sub>H</sub></i> by almost 27%. Financial savings and a reduction of emissions strongly depend on the fuel used in the building. Increasing the level of thermal insulation of walls increases the perceptible temperature in rooms by 1.2–1.5%. |
| first_indexed | 2024-03-10T13:47:12Z |
| format | Article |
| id | doaj.art-297867d0d38f40ce9113bd2b4b6cca42 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T13:47:12Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-297867d0d38f40ce9113bd2b4b6cca422023-11-21T02:29:56ZengMDPI AGEnergies1996-10732020-12-011415610.3390/en14010056Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in BuildingsWalery Jezierski0Beata Sadowska1Krzysztof Pawłowski2Faculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska Street 45E, 15-351 Bialystok, PolandFaculty of Civil Engineering and Environmental Sciences, Bialystok University of Technology, Wiejska Street 45E, 15-351 Bialystok, PolandFaculty of Civil and Environmental Engineering and Architecture, UTP University of Science and Technology, 7 Kaliskiego Street, 85-796 Bydgoszcz, PolandVarious methods can be used to reduce energy consumption in buildings. One of them is the tightening of energy requirements, which, like other methods, cannot result in a worsening of the indoor environmental quality. The article presents a study on the impact of changes in the thermal insulation of the building envelope on the energy demand, heating costs, and emissions. Mathematical models of the dependence of the index of annual usable energy demand for heating (<i>EU<sub>H</sub></i>) of a residential house on the thermal transmittance coefficients (<i>U<sub>i</sub></i>) of selected building elements were developed. Values of <i>U<sub>i</sub></i> were adopted at three levels, corresponding to the maximum required values—as approved in Polish law for the periods from 2014, 2017, and 2021. The analyses were conducted for the location of the building in three of the five climate zones of Poland. It turned out that the differences in the energy demand in various locations in Poland amount to 32.6%. The change in <i>U<sub>i</sub></i> in the analyzed period causes a decrease of <i>EU<sub>H</sub></i> by almost 27%. Financial savings and a reduction of emissions strongly depend on the fuel used in the building. Increasing the level of thermal insulation of walls increases the perceptible temperature in rooms by 1.2–1.5%.https://www.mdpi.com/1996-1073/14/1/56thermal transmittance coefficientbuilding envelopethe index of annual usable energy demand for heatingdeterministic mathematical modelfinancial savingsreduction of harmful emissions |
| spellingShingle | Walery Jezierski Beata Sadowska Krzysztof Pawłowski Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings Energies thermal transmittance coefficient building envelope the index of annual usable energy demand for heating deterministic mathematical model financial savings reduction of harmful emissions |
| title | Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings |
| title_full | Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings |
| title_fullStr | Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings |
| title_full_unstemmed | Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings |
| title_short | Impact of Changes in the Required Thermal Insulation of Building Envelope on Energy Demand, Heating Costs, Emissions, and Temperature in Buildings |
| title_sort | impact of changes in the required thermal insulation of building envelope on energy demand heating costs emissions and temperature in buildings |
| topic | thermal transmittance coefficient building envelope the index of annual usable energy demand for heating deterministic mathematical model financial savings reduction of harmful emissions |
| url | https://www.mdpi.com/1996-1073/14/1/56 |
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