Mass transfer performance for hollow fibre modules with shell-side axial feed flow: using an engineering approach to develop a framework |
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| Institution: | 1. College of Materials Science and Engineering, Beijing Institute of Technology, Beijing Engineering Research Center of Cellulose and Its Derivatives, Beijing 100081, PR China;2. North century cellulose technology research & development Co., Ltd., Beijing 100081, PR China;1. Department of Building Services Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China;2. Key Laboratory of Enhanced Heat Transfer and Energy Conservation of Education Ministry, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, China;1. Lehigh University, Dept. of Mechanical Engineering & Mechanics, USA;2. Tabuk University, Dept. of Mechanical Engineering, Saudi Arabia;3. Turkish Military Academy, Dept. of Mechanical Engineering, Turkey;4. King Abdul-Aziz University, Dept. of Mechanical Engineering, Saudi Arabia;5. King Khalid University, Dept. of Mechanical Engineering, Saudi Arabia;1. Interdisciplinary Graduate School, Nanyang Technological University, Singapore 639798, Singapore;2. Singapore Membrane Technology Centre, Nanyang Environment and Water Research Institute, Nanyang Technological University, Singapore 637141, Singapore;3. School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore 637459, Singapore;4. School of Civil and Environmental Engineering, Nanyang Technological University, Singapore 639798, Singapore;5. Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology, Daejeon 31414, Republic of Korea;1. Sustainable Membrane Technology Research Group (SMTRG), Faculty of Petroleum, Gas and Petrochemical Engineering (FPGPE), Persian Gulf University (PGU), Bushehr 75169-13817, Iran;2. Oil and Gas Research Center, Persian Gulf University, Bushehr 75169-13817, Iran |
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| Abstract: | For several membrane separation processes, hollow fibre modules are either an already established or a promising type of module. Based on the analogy between mass and heat transfer, an engineering approach is proposed to estimate the shell-side mass transfer coefficient for axial flow in hollow fibre modules with due allowance for the void fraction. The approach enables one to take the entrance effects of the hydrodynamic and concentration profile into account. The trends obtained by this generalised approach are similar to those of empirical correlations found in the literature over a wide range of Reynolds numbers and module packing densities. The empirical correlations differ significantly one from the other. The differences between the mass transfer coefficients obtained by the empirical correlations compared to those obtained following the approach proposed in this study are discussed. The different effects influencing mass transfer in hollow fibre modules are identified and discussed as a function of void fraction. Further, an approach to reflect the influence of maldistribution on mass transfer performance is provided. |
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