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Enhancing the Thermal Performance of Slender Packed Beds through Internal Heat Fins
Slender packed beds are widely used in the chemical and process industry for heterogeneous catalytic reactions in tube-bundle reactors. Under safety and reaction engineering aspects, good radial heat transfer is of outstanding importance. However, because of local wall effects, the radial heat trans...
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| Published in: | Processes 2020-12, Vol.8 (12), p.1528 |
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| cited_by | cdi_FETCH-LOGICAL-c292t-f53b3d0d0a2a88bd14740cec46b36f823db773a1f588b4b48ebf1a0df9f1518a3 |
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| cites | cdi_FETCH-LOGICAL-c292t-f53b3d0d0a2a88bd14740cec46b36f823db773a1f588b4b48ebf1a0df9f1518a3 |
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| container_title | Processes |
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| creator | Jurtz, Nico Flaischlen, Steffen Scherf, Sören C. Kraume, Matthias Wehinger, Gregor D. |
| description | Slender packed beds are widely used in the chemical and process industry for heterogeneous catalytic reactions in tube-bundle reactors. Under safety and reaction engineering aspects, good radial heat transfer is of outstanding importance. However, because of local wall effects, the radial heat transport in the vicinity of the reactor wall is hindered. Particle-resolved computational fluid dynamics (CFD) is used to investigate the impact of internal heat fins on the near wall radial heat transport in slender packed beds filled with spherical particles. The simulation results are validated against experimental measurements in terms of particle count and pressure drop. The simulation results show that internal heat fins increase the conductive portion of the radial heat transport close to the reactor wall, leading to an overall increased thermal performance of the system. In a wide flow range (100 |
| doi_str_mv | 10.3390/pr8121528 |
| format | article |
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Under safety and reaction engineering aspects, good radial heat transfer is of outstanding importance. However, because of local wall effects, the radial heat transport in the vicinity of the reactor wall is hindered. Particle-resolved computational fluid dynamics (CFD) is used to investigate the impact of internal heat fins on the near wall radial heat transport in slender packed beds filled with spherical particles. The simulation results are validated against experimental measurements in terms of particle count and pressure drop. The simulation results show that internal heat fins increase the conductive portion of the radial heat transport close to the reactor wall, leading to an overall increased thermal performance of the system. In a wide flow range (100<Rep<1000), an increase of up to 35% in wall heat transfer coefficient and almost 90% in effective radial thermal conductivity is observed, respectively.</description><identifier>ISSN: 2227-9717</identifier><identifier>EISSN: 2227-9717</identifier><identifier>DOI: 10.3390/pr8121528</identifier><language>eng</language><publisher>Basel: MDPI AG</publisher><subject>Chemical reactions ; Computational fluid dynamics ; Computer applications ; Fins ; Fluid dynamics ; Heat conductivity ; Heat transfer ; Heat transfer coefficients ; Investigations ; Nuclear engineering ; Nuclear safety ; Packed beds ; Pressure drop ; Reactors ; Reynolds number ; Spheres ; Thermal conductivity ; Velocity ; Wall effects</subject><ispartof>Processes, 2020-12, Vol.8 (12), p.1528</ispartof><rights>2020. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). 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Under safety and reaction engineering aspects, good radial heat transfer is of outstanding importance. However, because of local wall effects, the radial heat transport in the vicinity of the reactor wall is hindered. Particle-resolved computational fluid dynamics (CFD) is used to investigate the impact of internal heat fins on the near wall radial heat transport in slender packed beds filled with spherical particles. The simulation results are validated against experimental measurements in terms of particle count and pressure drop. The simulation results show that internal heat fins increase the conductive portion of the radial heat transport close to the reactor wall, leading to an overall increased thermal performance of the system. 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| subjects | Chemical reactions Computational fluid dynamics Computer applications Fins Fluid dynamics Heat conductivity Heat transfer Heat transfer coefficients Investigations Nuclear engineering Nuclear safety Packed beds Pressure drop Reactors Reynolds number Spheres Thermal conductivity Velocity Wall effects |
| title | Enhancing the Thermal Performance of Slender Packed Beds through Internal Heat Fins |
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