Project Report: Thermal Performance of FIRSTLIFE House
The paper deals with selected thermal properties of a small building that was built during the international student competition Solar Decathlon 2021/2022 and is now part of the Living Lab in Wuppertal. It summarizes the essential information about the overall design of this wooden building with con...
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| Language: | English |
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MDPI AG
2024-11-01
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| Series: | Buildings |
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| Online Access: | https://www.mdpi.com/2075-5309/14/11/3600 |
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| author | Jan Tywoniak Zdenko Malík Kamil Staněk Kateřina Sojková |
| author_facet | Jan Tywoniak Zdenko Malík Kamil Staněk Kateřina Sojková |
| author_sort | Jan Tywoniak |
| collection | DOAJ |
| description | The paper deals with selected thermal properties of a small building that was built during the international student competition Solar Decathlon 2021/2022 and is now part of the Living Lab in Wuppertal. It summarizes the essential information about the overall design of this wooden building with construction and technologies corresponding to the passive building standard. Built-in sensors and other equipment enable long-term monitoring of thermal parameters. Part of the information comes from the building operation control system. The thermal transmittance value for the perimeter wall matches calculated expectation well, even from a short period of time and not at an achievable perfectly steady state boundary condition. The (positive) difference between the calculated values and the measured ones did not exceed 0.015 W/(m<sup>2</sup>K). It was proven that even for such a small building with a very small heat demand, the heat transfer coefficient can be estimated alternatively from a co-heating test (measured electricity power for a fan heater) and from energy delivered to underfloor heating (calorimeter in heating system). Differences among both measurement types and calculation matched in the range ± 10%. In the last section, the dynamic response test is briefly described. The measured indoor air temperature curves under periodic dynamic loads (use of fan heater) are compared with the simulation results. The simulation model working with lumped parameters for each element of the building envelope was able to replicate the measured situation well, while its use does not require special knowledge of the user. In the studied case, the differences between measured and simulated air temperatures were less than 1 Kelvin if the first two to three days of the test period are ignored due to large thermal inertia. Finally, the measurement campaign program for the next period is outlined. |
| format | Article |
| id | doaj-art-dd6c49ab0c8e4596a2792c50e5d90259 |
| institution | OA Journals |
| issn | 2075-5309 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Buildings |
| spelling | doaj-art-dd6c49ab0c8e4596a2792c50e5d902592025-08-20T01:53:44ZengMDPI AGBuildings2075-53092024-11-011411360010.3390/buildings14113600Project Report: Thermal Performance of FIRSTLIFE HouseJan Tywoniak0Zdenko Malík1Kamil Staněk2Kateřina Sojková3Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7, 16629 Prague, Czech RepublicUniversity Centre for Energy Efficient Buildings, Czech Technical University in Prague, Třinecká 1024, 27343 Buštěhrad, Czech RepublicUniversity Centre for Energy Efficient Buildings, Czech Technical University in Prague, Třinecká 1024, 27343 Buštěhrad, Czech RepublicUniversity Centre for Energy Efficient Buildings, Czech Technical University in Prague, Třinecká 1024, 27343 Buštěhrad, Czech RepublicThe paper deals with selected thermal properties of a small building that was built during the international student competition Solar Decathlon 2021/2022 and is now part of the Living Lab in Wuppertal. It summarizes the essential information about the overall design of this wooden building with construction and technologies corresponding to the passive building standard. Built-in sensors and other equipment enable long-term monitoring of thermal parameters. Part of the information comes from the building operation control system. The thermal transmittance value for the perimeter wall matches calculated expectation well, even from a short period of time and not at an achievable perfectly steady state boundary condition. The (positive) difference between the calculated values and the measured ones did not exceed 0.015 W/(m<sup>2</sup>K). It was proven that even for such a small building with a very small heat demand, the heat transfer coefficient can be estimated alternatively from a co-heating test (measured electricity power for a fan heater) and from energy delivered to underfloor heating (calorimeter in heating system). Differences among both measurement types and calculation matched in the range ± 10%. In the last section, the dynamic response test is briefly described. The measured indoor air temperature curves under periodic dynamic loads (use of fan heater) are compared with the simulation results. The simulation model working with lumped parameters for each element of the building envelope was able to replicate the measured situation well, while its use does not require special knowledge of the user. In the studied case, the differences between measured and simulated air temperatures were less than 1 Kelvin if the first two to three days of the test period are ignored due to large thermal inertia. Finally, the measurement campaign program for the next period is outlined.https://www.mdpi.com/2075-5309/14/11/3600thermal performance characteristicsthermal transmittanceheat transfer coefficientco-heating testsolar decathlonsustainability of built environment |
| spellingShingle | Jan Tywoniak Zdenko Malík Kamil Staněk Kateřina Sojková Project Report: Thermal Performance of FIRSTLIFE House Buildings thermal performance characteristics thermal transmittance heat transfer coefficient co-heating test solar decathlon sustainability of built environment |
| title | Project Report: Thermal Performance of FIRSTLIFE House |
| title_full | Project Report: Thermal Performance of FIRSTLIFE House |
| title_fullStr | Project Report: Thermal Performance of FIRSTLIFE House |
| title_full_unstemmed | Project Report: Thermal Performance of FIRSTLIFE House |
| title_short | Project Report: Thermal Performance of FIRSTLIFE House |
| title_sort | project report thermal performance of firstlife house |
| topic | thermal performance characteristics thermal transmittance heat transfer coefficient co-heating test solar decathlon sustainability of built environment |
| url | https://www.mdpi.com/2075-5309/14/11/3600 |
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