Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures
Fired bricks represent one of the most popular building materials, of which production is still growing. Since the functional properties of bricks have reached their physical limits, the current development aims at an optimization of production procedures as it goes along with heavy environmental lo...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/9/2211 |
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| author | Václav Kočí Lenka Scheinherrová Jiří Maděra Martin Keppert Zbigniew Suchorab Grzegorz Łagód Robert Černý |
| author_facet | Václav Kočí Lenka Scheinherrová Jiří Maděra Martin Keppert Zbigniew Suchorab Grzegorz Łagód Robert Černý |
| author_sort | Václav Kočí |
| collection | DOAJ |
| description | Fired bricks represent one of the most popular building materials, of which production is still growing. Since the functional properties of bricks have reached their physical limits, the current development aims at an optimization of production procedures as it goes along with heavy environmental loads. This paper is focused on tailoring the firing procedure to optimize the energy demands. Dealing with five different clays, their heat storage properties are determined using inverse analysis of calorimetric data so that the measurement errors are reduced. Moreover, effective values incorporate the thermal processes that occur during firing. A simplified model of clay samples is then used to calculate the energy demands for reaching an optimal firing scheme. The results show that specific treatment is necessary for particular clays as the energy demands may range between 89 and 173 MJ·m<sup>−2</sup>, depending on a clay composition. The highest demands were found in the case of clays containing the high volume of calcite and dolomite, of which thermal decomposition is very energy demanding. Using the tailored firing scheme, one can reach energy savings of up to 49% while the functional properties would be preserved due to maintaining the optimal temperature evolution in the brick body. |
| first_indexed | 2024-03-10T20:04:02Z |
| format | Article |
| id | doaj.art-f51b29ec05a341b384f5212217959489 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T20:04:02Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-f51b29ec05a341b384f52122179594892023-11-19T23:22:33ZengMDPI AGEnergies1996-10732020-05-01139221110.3390/en13092211Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High TemperaturesVáclav Kočí0Lenka Scheinherrová1Jiří Maděra2Martin Keppert3Zbigniew Suchorab4Grzegorz Łagód5Robert Černý6Department of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7/2077, 166 29 Prague 6, Czech RepublicDepartment of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7/2077, 166 29 Prague 6, Czech RepublicDepartment of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7/2077, 166 29 Prague 6, Czech RepublicDepartment of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7/2077, 166 29 Prague 6, Czech RepublicDepartment of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7/2077, 166 29 Prague 6, Czech RepublicDepartment of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7/2077, 166 29 Prague 6, Czech RepublicDepartment of Materials Engineering and Chemistry, Faculty of Civil Engineering, Czech Technical University in Prague, Thákurova 7/2077, 166 29 Prague 6, Czech RepublicFired bricks represent one of the most popular building materials, of which production is still growing. Since the functional properties of bricks have reached their physical limits, the current development aims at an optimization of production procedures as it goes along with heavy environmental loads. This paper is focused on tailoring the firing procedure to optimize the energy demands. Dealing with five different clays, their heat storage properties are determined using inverse analysis of calorimetric data so that the measurement errors are reduced. Moreover, effective values incorporate the thermal processes that occur during firing. A simplified model of clay samples is then used to calculate the energy demands for reaching an optimal firing scheme. The results show that specific treatment is necessary for particular clays as the energy demands may range between 89 and 173 MJ·m<sup>−2</sup>, depending on a clay composition. The highest demands were found in the case of clays containing the high volume of calcite and dolomite, of which thermal decomposition is very energy demanding. Using the tailored firing scheme, one can reach energy savings of up to 49% while the functional properties would be preserved due to maintaining the optimal temperature evolution in the brick body.https://www.mdpi.com/1996-1073/13/9/2211claysfiringdifferential scanning calorimetrycomputational modelingoptimizationenergy demands |
| spellingShingle | Václav Kočí Lenka Scheinherrová Jiří Maděra Martin Keppert Zbigniew Suchorab Grzegorz Łagód Robert Černý Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures Energies clays firing differential scanning calorimetry computational modeling optimization energy demands |
| title | Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures |
| title_full | Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures |
| title_fullStr | Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures |
| title_full_unstemmed | Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures |
| title_short | Experimental and Computational Study of Thermal Processes in Red Clays Exposed to High Temperatures |
| title_sort | experimental and computational study of thermal processes in red clays exposed to high temperatures |
| topic | clays firing differential scanning calorimetry computational modeling optimization energy demands |
| url | https://www.mdpi.com/1996-1073/13/9/2211 |
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