Chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step WS cycle
Ceria-based H2O/CO2-splitting solar-driven thermochemical cycle produces hydrogen or syngas. Thermal optimization of solar thermochemical reactor (STCR) improves the solar-to-fuel conversion efficiency. This research presents two conceptual designs and thermal modelling of RPC-ceria-based STCR cavit...
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my.uniten.dspace-339642024-10-14T11:17:32Z Chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step WS cycle Sharma J.P. Kumar R. Ahmadi M.H. Mukhtar A. Yasir A.S.H.M. Sharifpur M. Ongar B. Yegzekova A. 57197711668 55776822500 55016898100 57195426549 58518504200 23092177300 57200992503 57422122400 Porous media Solar fuels SolTrace STCR modelling Thermal analysis WS process Conversion efficiency Hydrogen production Porous materials Solar fuels Solar power generation Thermoanalysis Milliradians Porous medium Reactor cavity Reactor modelling Slope errors Solar fuels Solar thermochemical reactor modeling Soltrace Thermo-chemical reactor WS process Cerium oxide Ceria-based H2O/CO2-splitting solar-driven thermochemical cycle produces hydrogen or syngas. Thermal optimization of solar thermochemical reactor (STCR) improves the solar-to-fuel conversion efficiency. This research presents two conceptual designs and thermal modelling of RPC-ceria-based STCR cavities to attain the optimal operating conditions for CeO2 reduction step. Presented hybrid geometries consisting of cylindrical�hemispherical and conical frustum�hemispherical structures. The focal point was positioned at x = 0, -10 mm, and -20 mm from the aperture to examine the flux distribution in both solar reactor configurations. Case-1 with 2 milliradian S.E (slope error) yields a 27% greater solar flux than case-1 with 4 milliradians S.E, despite the 4 milliradian S.E produces an elevated temperature in the reactor cavity. The mean temperature in the reactive porous region was most significant for case-2 (x = -10 mm) with 4 mrad S.E for model-2, reaching 1966 K and 2008 K radially and axially, respectively. In case-2 (x = -10 mm) for 4 mrad S.E, model-1 attained 1720 K. The efficiency analysis shows that the highest conversion efficiency value was obtained to be 7.95% for case-1 with 4 milliradian S.E. � 2023 The Author(s) Final 2024-10-14T03:17:32Z 2024-10-14T03:17:32Z 2023 Article 10.1016/j.egyr.2023.06.012 2-s2.0-85162771405 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85162771405&doi=10.1016%2fj.egyr.2023.06.012&partnerID=40&md5=1022b617c6042e30a6597d907ed7ad9e https://irepository.uniten.edu.my/handle/123456789/33964 10 99 113 All Open Access Gold Open Access Elsevier Ltd Scopus |
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Porous media Solar fuels SolTrace STCR modelling Thermal analysis WS process Conversion efficiency Hydrogen production Porous materials Solar fuels Solar power generation Thermoanalysis Milliradians Porous medium Reactor cavity Reactor modelling Slope errors Solar fuels Solar thermochemical reactor modeling Soltrace Thermo-chemical reactor WS process Cerium oxide |
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Porous media Solar fuels SolTrace STCR modelling Thermal analysis WS process Conversion efficiency Hydrogen production Porous materials Solar fuels Solar power generation Thermoanalysis Milliradians Porous medium Reactor cavity Reactor modelling Slope errors Solar fuels Solar thermochemical reactor modeling Soltrace Thermo-chemical reactor WS process Cerium oxide Sharma J.P. Kumar R. Ahmadi M.H. Mukhtar A. Yasir A.S.H.M. Sharifpur M. Ongar B. Yegzekova A. Chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step WS cycle |
| description |
Ceria-based H2O/CO2-splitting solar-driven thermochemical cycle produces hydrogen or syngas. Thermal optimization of solar thermochemical reactor (STCR) improves the solar-to-fuel conversion efficiency. This research presents two conceptual designs and thermal modelling of RPC-ceria-based STCR cavities to attain the optimal operating conditions for CeO2 reduction step. Presented hybrid geometries consisting of cylindrical�hemispherical and conical frustum�hemispherical structures. The focal point was positioned at x = 0, -10 mm, and -20 mm from the aperture to examine the flux distribution in both solar reactor configurations. Case-1 with 2 milliradian S.E (slope error) yields a 27% greater solar flux than case-1 with 4 milliradians S.E, despite the 4 milliradian S.E produces an elevated temperature in the reactor cavity. The mean temperature in the reactive porous region was most significant for case-2 (x = -10 mm) with 4 mrad S.E for model-2, reaching 1966 K and 2008 K radially and axially, respectively. In case-2 (x = -10 mm) for 4 mrad S.E, model-1 attained 1720 K. The efficiency analysis shows that the highest conversion efficiency value was obtained to be 7.95% for case-1 with 4 milliradian S.E. � 2023 The Author(s) |
| author2 |
57197711668 |
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57197711668 Sharma J.P. Kumar R. Ahmadi M.H. Mukhtar A. Yasir A.S.H.M. Sharifpur M. Ongar B. Yegzekova A. |
| format |
Article |
| author |
Sharma J.P. Kumar R. Ahmadi M.H. Mukhtar A. Yasir A.S.H.M. Sharifpur M. Ongar B. Yegzekova A. |
| author_sort |
Sharma J.P. |
| title |
Chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step WS cycle |
| title_short |
Chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step WS cycle |
| title_full |
Chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step WS cycle |
| title_fullStr |
Chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step WS cycle |
| title_full_unstemmed |
Chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step WS cycle |
| title_sort |
chemical and thermal performance analysis of a solar thermochemical reactor for hydrogen production via two-step ws cycle |
| publisher |
Elsevier Ltd |
| publishDate |
2024 |
| _version_ |
1814061034964516864 |
| score |
13.211869 |