Experimental investigation on heat transfer in a gas-solid fluidized bed with a bundle of heat exchanging tubes
A fluidized bed reactor is commonly used for highly exothermic reactions for different chemical industrial processes. However, inefficient removal of the generated heat due to the exothermic reaction can seriously influence reactor performance. Hence, quantifying and understanding the heat transfer...
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| Format: | Article |
| Language: | English |
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Unviversity of Technology- Iraq
2022-09-01
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| Series: | Engineering and Technology Journal |
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| Online Access: | https://etj.uotechnology.edu.iq/article_174494_5cbb90d2c185725de63ba9e52b9e2455.pdf |
| _version_ | 1797337712999530496 |
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| author | Zahraa W. Hasan Jamal Ali Abbas Sultan Laith Sabri Maryam Tariq Hussein Ghalib Muthanna Al-Dahhan |
| author_facet | Zahraa W. Hasan Jamal Ali Abbas Sultan Laith Sabri Maryam Tariq Hussein Ghalib Muthanna Al-Dahhan |
| author_sort | Zahraa W. Hasan |
| collection | DOAJ |
| description | A fluidized bed reactor is commonly used for highly exothermic reactions for different chemical industrial processes. However, inefficient removal of the generated heat due to the exothermic reaction can seriously influence reactor performance. Hence, quantifying and understanding the heat transfer phenomena in this reactor is essential to enhance the performance of the reactor and consequently the chemical process. To achieve a better quantification and understanding of the heat transport in this reactor, an advanced heat transfer technique has been used in this study to quantify the impact of the presence of the cooling tubes on the local heat transfer coefficient under different operating conditions for this reactor. It has been found that the local heat transfer coefficient in the fluidized bed reactor equipped with a bundle of vertical tubes increases significantly as superficial gas velocity increases at the wall region, while different behavior was noticed at the center of the reactor. Moreover, the results show that the local heat transfer significantly decreases at the reactor's core region for all studied superficial gas velocities. Furthermore, the new tube arrangement offers a uniform local heat transfer profile for all studied operating conditions. The obtained new high-quality experimental data for the local heat transfer coefficient in a fluidized bed reactor equipped with a bundle of tubes can be used for validation CFD simulations or mathematical models, facilitating the design, scale up, and operation of this reactor. |
| first_indexed | 2024-03-08T09:17:35Z |
| format | Article |
| id | doaj.art-dc943415db464940bacc5760b3fe8abe |
| institution | Directory Open Access Journal |
| issn | 1681-6900 2412-0758 |
| language | English |
| last_indexed | 2024-03-08T09:17:35Z |
| publishDate | 2022-09-01 |
| publisher | Unviversity of Technology- Iraq |
| record_format | Article |
| series | Engineering and Technology Journal |
| spelling | doaj.art-dc943415db464940bacc5760b3fe8abe2024-01-31T14:27:55ZengUnviversity of Technology- IraqEngineering and Technology Journal1681-69002412-07582022-09-014091105111610.30684/etj.2022.132101.1094174494Experimental investigation on heat transfer in a gas-solid fluidized bed with a bundle of heat exchanging tubesZahraa W. Hasan0Jamal Ali1Abbas Sultan2Laith Sabri3Maryam Tariq4Hussein Ghalib5Muthanna Al-Dahhan6Chemical Engineering Department, University of Technology, Baghdad, IraqUniversity of TechnologyDepartment of Chemical Engineering, Faculty of Engineering, University of Technology, Baghdad, IraqChemical Engineering Department, Faculty of Engineering, University of Technology, IraqChemical engineering department, University of technology-IraqChemical engineering department, university of technology-IraqDepartment of Chemical and Biochemical Engineering, Missouri University of Science and Technology (MS&T), Rolla, MOA fluidized bed reactor is commonly used for highly exothermic reactions for different chemical industrial processes. However, inefficient removal of the generated heat due to the exothermic reaction can seriously influence reactor performance. Hence, quantifying and understanding the heat transfer phenomena in this reactor is essential to enhance the performance of the reactor and consequently the chemical process. To achieve a better quantification and understanding of the heat transport in this reactor, an advanced heat transfer technique has been used in this study to quantify the impact of the presence of the cooling tubes on the local heat transfer coefficient under different operating conditions for this reactor. It has been found that the local heat transfer coefficient in the fluidized bed reactor equipped with a bundle of vertical tubes increases significantly as superficial gas velocity increases at the wall region, while different behavior was noticed at the center of the reactor. Moreover, the results show that the local heat transfer significantly decreases at the reactor's core region for all studied superficial gas velocities. Furthermore, the new tube arrangement offers a uniform local heat transfer profile for all studied operating conditions. The obtained new high-quality experimental data for the local heat transfer coefficient in a fluidized bed reactor equipped with a bundle of tubes can be used for validation CFD simulations or mathematical models, facilitating the design, scale up, and operation of this reactor.https://etj.uotechnology.edu.iq/article_174494_5cbb90d2c185725de63ba9e52b9e2455.pdffluidized bed reactor,,,،,؛vertical heat exchanging tubes,,,،,؛local heat transfer coefficient,,,،,؛advanced heat transfer technique,,,،,؛silica sand particle |
| spellingShingle | Zahraa W. Hasan Jamal Ali Abbas Sultan Laith Sabri Maryam Tariq Hussein Ghalib Muthanna Al-Dahhan Experimental investigation on heat transfer in a gas-solid fluidized bed with a bundle of heat exchanging tubes Engineering and Technology Journal fluidized bed reactor,, ,،,؛vertical heat exchanging tubes,, ,،,؛local heat transfer coefficient,, ,،,؛advanced heat transfer technique,, ,،,؛silica sand particle |
| title | Experimental investigation on heat transfer in a gas-solid fluidized bed with a bundle of heat exchanging tubes |
| title_full | Experimental investigation on heat transfer in a gas-solid fluidized bed with a bundle of heat exchanging tubes |
| title_fullStr | Experimental investigation on heat transfer in a gas-solid fluidized bed with a bundle of heat exchanging tubes |
| title_full_unstemmed | Experimental investigation on heat transfer in a gas-solid fluidized bed with a bundle of heat exchanging tubes |
| title_short | Experimental investigation on heat transfer in a gas-solid fluidized bed with a bundle of heat exchanging tubes |
| title_sort | experimental investigation on heat transfer in a gas solid fluidized bed with a bundle of heat exchanging tubes |
| topic | fluidized bed reactor,, ,،,؛vertical heat exchanging tubes,, ,،,؛local heat transfer coefficient,, ,،,؛advanced heat transfer technique,, ,،,؛silica sand particle |
| url | https://etj.uotechnology.edu.iq/article_174494_5cbb90d2c185725de63ba9e52b9e2455.pdf |
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