Please use this identifier to cite or link to this item: http://bura.brunel.ac.uk/handle/2438/28916
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dc.contributor.authorZhang, X-
dc.contributor.authorGe, Y-
dc.contributor.authorSun, J-
dc.date.accessioned2024-05-02T11:45:26Z-
dc.date.available2024-05-02T11:45:26Z-
dc.date.issued2020-03-06-
dc.identifier.citationZhang, X., Ge, Y. and Sun, J. (2020) 'CFD performance analysis of finned-tube CO<inf>2</inf> gas coolers with various inlet air flow patterns', Energy and Built Environment, 1 (3), pp. 233 - 241. doi: 10.1016/j.enbenv.2020.02.004.en_US
dc.identifier.urihttps://bura.brunel.ac.uk/handle/2438/28916-
dc.description.abstractA detailed model of three-dimensional computational fluid dynamics (CFD) on a finned-tube CO2 gas cooler has been developed and validated. The model is then applied to investigate the effect of uniform and mal-distribution inlet airflow profiles on the coil performance. The airflow mal-distribution velocity profiles include linear-up, linear-down and parabolic while the effected coil performance parameters contain airside pressure drop, average airside heat transfer coefficient, approach temperature and coil heating capacity. The model also enables to predict the CO2 refrigerant temperature profile along the coil pipes from refrigerant inlet to outlet at different operation conditions. The simulation results reveal that different types of inlet airflow velocity profiles have significant effects on the gas cooler performance. The uniform airflow velocity profile case shows the best thermal performance of gas cooler. Compared with the cases of linear-up and parabolic air velocity profiles, the linear-down airflow profile can influence more on the coil heat transfer performance. Due to the thermal conduction between neighbour tubes through coil fins, reversed heat transfer phenomenon exists which can be detected and simulated by the CFD model. It is predicted that the linear-down airflow profile can increase greatly the reversed heat transfer phenomenon and thus lead to the highest approach temperature and the lowest heating capacity amongst these four types of airflow profiles. The research method and outcomes presented in this paper can have great potentials to optimize the performance of a CO2 gas cooler and its associated refrigeration system.en_US
dc.description.sponsorshipThe authors would like to acknowledge the support received from GEA Searle and Research Councils UK (RCUK) for this project.en_US
dc.format.extent233 - 241-
dc.format.mediumElectronic-
dc.languageEnglish-
dc.language.isoenen_US
dc.publisherElsevier on behalf of Southwest Jiaotong Universityen_US
dc.rightsCopyright © 2020 Southwest Jiaotong University. Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license. ( https://creativecommons.org/licenses/by-nc-nd/4.0/ )-
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/-
dc.subjectCO2 finned-tube gas cooleren_US
dc.subjectairflow misdistributionsen_US
dc.subjectheat transfer coefficienten_US
dc.subjectCO2 refrigeration systemen_US
dc.subjectcomputational fluid dynamics (CFD) modellingen_US
dc.titleCFD performance analysis of finned-tube CO<inf>2</inf> gas coolers with various inlet air flow patternsen_US
dc.title.alternativeCFD performance analysis of finned-tube CO2 gas coolers with various inlet air flow patterns-
dc.typeArticleen_US
dc.identifier.doihttps://doi.org/10.1016/j.enbenv.2020.02.004-
dc.relation.isPartOfEnergy and Built Environment-
pubs.issue3-
pubs.publication-statusPublished-
pubs.volume1-
dc.identifier.eissn2666-1233-
dc.rights.licensehttps://creativecommons.org/licenses/by-nc-nd/4.0/legalcode.en-
dc.rights.holderSouthwest Jiaotong University-
Appears in Collections:Dept of Mechanical and Aerospace Engineering Research Papers
Institute of Energy Futures

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