Heat transfer model of two-phase flow across tube bundle in submerged combustion vaporizer

doi:10.1016/j.cjche.2018.06.032

摘要/Abstract

摘要： In order to optimize the design of the submerged combustion vaporizer (SCV), an experimental apparatus was set up to investigate the heat transfer character outside the tube bundle in SCV. Several experiments were conducted using water and CO₂ as the heat transfer media in the tubes, respectively. The results indicated that hot air flux, the initial liquid level height and the tube pitch ratio had great influence on the heat transfer coefficient outside the tube bundle (h_o). Finally, the air flux associated factor β and height associated factor γ were introduced to propose a new ho correlation. After verified by experiments using cold water, high pressure CO₂ and liquid N₂ as heat transfer media, respectively, it was found that the biggest deviation between the predicted and the experimental values was less than 25%.

关键词: Submerged combustion vaporizer, Fluid sweeping tube bundle, Two-phase flow, Heat transfer coefficient, Modeling

Abstract: In order to optimize the design of the submerged combustion vaporizer (SCV), an experimental apparatus was set up to investigate the heat transfer character outside the tube bundle in SCV. Several experiments were conducted using water and CO₂ as the heat transfer media in the tubes, respectively. The results indicated that hot air flux, the initial liquid level height and the tube pitch ratio had great influence on the heat transfer coefficient outside the tube bundle (h_o). Finally, the air flux associated factor β and height associated factor γ were introduced to propose a new ho correlation. After verified by experiments using cold water, high pressure CO₂ and liquid N₂ as heat transfer media, respectively, it was found that the biggest deviation between the predicted and the experimental values was less than 25%.

Key words: Submerged combustion vaporizer, Fluid sweeping tube bundle, Two-phase flow, Heat transfer coefficient, Modeling

Jiajun Song, Dongyan Han, Qinqin Xu, Dan Zhou, Jianzhong Yin. Heat transfer model of two-phase flow across tube bundle in submerged combustion vaporizer[J]. Chinese Journal of Chemical Engineering, 2019, 27(3): 613-619.

Jiajun Song, Dongyan Han, Qinqin Xu, Dan Zhou, Jianzhong Yin. Heat transfer model of two-phase flow across tube bundle in submerged combustion vaporizer[J]. Chin.J.Chem.Eng., 2019, 27(3): 613-619.

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