Kinetic investigation and numerical modelling of CaCO3/Al2O3 reactor for high-temperature thermal energy storage application
This study conducts kinetic analyses of the carbonation reaction of CaCO3 (doped with Al2O3) as well as parametric analyses of the performance of a thermochemical reactor, which can act as a thermal battery. Kinetic measurements of CO2 release and absorption were carried out using thermogravimetric...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Language: | English |
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Elsevier
2022
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| Online Access: | http://purl.org/au-research/grants/arc/LP150100730 http://hdl.handle.net/20.500.11937/97013 |
| _version_ | 1848766216607367168 |
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| author | Mathew, Arun Nadim, Nima Chandratilleke, Tilak T. Paskevicius, Mark Humphries, Terry D. Buckley, Craig E. |
| author_facet | Mathew, Arun Nadim, Nima Chandratilleke, Tilak T. Paskevicius, Mark Humphries, Terry D. Buckley, Craig E. |
| author_sort | Mathew, Arun |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This study conducts kinetic analyses of the carbonation reaction of CaCO3 (doped with Al2O3) as well as parametric analyses of the performance of a thermochemical reactor, which can act as a thermal battery. Kinetic measurements of CO2 release and absorption were carried out using thermogravimetric analysis (TGA) at 815, 830 and 845 °C on a CaCO3/Al2O3 sample that had been previously cycled over 500 times. The rapid reaction kinetics revealed that the Avrami nucleation growth model with exponent 3 fits well to explain the carbonation reaction. The numerical study considered a cylindrical reactor with a height and diameter of 100 mm. According to numerical analysis, at an applied CO2 pressure of 1 bar, increasing the thermal conductivity of the reactor bed from 1.33 to 5 W/m.K increases the rate of carbonation reaction by 74%. When the applied CO2 pressure is increased from 1 to 2 bar, the performance of the reactor bed with thermal conductivity of 1.33 W/m.K improves by 42%; however, when the applied CO2 pressure is increased from 2 to 3 bar, the performance improves by only 18%. Additionally, when the boundary temperature of the reactor was lowered by 30 °C, performance was enhanced by 43% at an applied CO2 pressure of 1 bar. This study also examined the effect of using a graphite fin as a heat extraction system. The graphite fin allowed for more rapid heat extraction and increased the carbonation reaction by 44% in the reactor bed with poor thermal conductivity (1.33 W/m.K) but had no effect in the reactor with modest thermal conductivity of (5 W/m.K) due to its ability to already transfer heat effectively to the reactor shell. |
| first_indexed | 2025-11-14T11:47:37Z |
| format | Journal Article |
| id | curtin-20.500.11937-97013 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:47:37Z |
| publishDate | 2022 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-970132025-02-28T05:40:46Z Kinetic investigation and numerical modelling of CaCO3/Al2O3 reactor for high-temperature thermal energy storage application Mathew, Arun Nadim, Nima Chandratilleke, Tilak T. Paskevicius, Mark Humphries, Terry D. Buckley, Craig E. Science & Technology Technology Energy & Fuels Thermochemical energy storage Calcium carbonate Reaction kinetics Numerical modelling CONCENTRATED SOLAR POWER CALCIUM-OXIDE CO2 CAPTURE CARBON-DIOXIDE PRODUCT LAYER HEAT-TRANSFER CAO INTEGRATION CALCINATION PERFORMANCE This study conducts kinetic analyses of the carbonation reaction of CaCO3 (doped with Al2O3) as well as parametric analyses of the performance of a thermochemical reactor, which can act as a thermal battery. Kinetic measurements of CO2 release and absorption were carried out using thermogravimetric analysis (TGA) at 815, 830 and 845 °C on a CaCO3/Al2O3 sample that had been previously cycled over 500 times. The rapid reaction kinetics revealed that the Avrami nucleation growth model with exponent 3 fits well to explain the carbonation reaction. The numerical study considered a cylindrical reactor with a height and diameter of 100 mm. According to numerical analysis, at an applied CO2 pressure of 1 bar, increasing the thermal conductivity of the reactor bed from 1.33 to 5 W/m.K increases the rate of carbonation reaction by 74%. When the applied CO2 pressure is increased from 1 to 2 bar, the performance of the reactor bed with thermal conductivity of 1.33 W/m.K improves by 42%; however, when the applied CO2 pressure is increased from 2 to 3 bar, the performance improves by only 18%. Additionally, when the boundary temperature of the reactor was lowered by 30 °C, performance was enhanced by 43% at an applied CO2 pressure of 1 bar. This study also examined the effect of using a graphite fin as a heat extraction system. The graphite fin allowed for more rapid heat extraction and increased the carbonation reaction by 44% in the reactor bed with poor thermal conductivity (1.33 W/m.K) but had no effect in the reactor with modest thermal conductivity of (5 W/m.K) due to its ability to already transfer heat effectively to the reactor shell. 2022 Journal Article http://hdl.handle.net/20.500.11937/97013 10.1016/j.solener.2022.06.005 English http://purl.org/au-research/grants/arc/LP150100730 http://purl.org/au-research/grants/arc/DP200102301 http://purl.org/au-research/grants/arc/FT160100303 Elsevier fulltext |
| spellingShingle | Science & Technology Technology Energy & Fuels Thermochemical energy storage Calcium carbonate Reaction kinetics Numerical modelling CONCENTRATED SOLAR POWER CALCIUM-OXIDE CO2 CAPTURE CARBON-DIOXIDE PRODUCT LAYER HEAT-TRANSFER CAO INTEGRATION CALCINATION PERFORMANCE Mathew, Arun Nadim, Nima Chandratilleke, Tilak T. Paskevicius, Mark Humphries, Terry D. Buckley, Craig E. Kinetic investigation and numerical modelling of CaCO3/Al2O3 reactor for high-temperature thermal energy storage application |
| title | Kinetic investigation and numerical modelling of CaCO3/Al2O3 reactor for high-temperature thermal energy storage application |
| title_full | Kinetic investigation and numerical modelling of CaCO3/Al2O3 reactor for high-temperature thermal energy storage application |
| title_fullStr | Kinetic investigation and numerical modelling of CaCO3/Al2O3 reactor for high-temperature thermal energy storage application |
| title_full_unstemmed | Kinetic investigation and numerical modelling of CaCO3/Al2O3 reactor for high-temperature thermal energy storage application |
| title_short | Kinetic investigation and numerical modelling of CaCO3/Al2O3 reactor for high-temperature thermal energy storage application |
| title_sort | kinetic investigation and numerical modelling of caco3/al2o3 reactor for high-temperature thermal energy storage application |
| topic | Science & Technology Technology Energy & Fuels Thermochemical energy storage Calcium carbonate Reaction kinetics Numerical modelling CONCENTRATED SOLAR POWER CALCIUM-OXIDE CO2 CAPTURE CARBON-DIOXIDE PRODUCT LAYER HEAT-TRANSFER CAO INTEGRATION CALCINATION PERFORMANCE |
| url | http://purl.org/au-research/grants/arc/LP150100730 http://purl.org/au-research/grants/arc/LP150100730 http://purl.org/au-research/grants/arc/LP150100730 http://hdl.handle.net/20.500.11937/97013 |