CFD modelling of condensers for freeze-drying processes

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Abstract

The aim of the present research is the development of a computational tool for investigating condensation processes and equipment with particular attention to freeze-dryers. These condensers in fact are usually operated at very low pressures, making it difficult to experimentally acquire quantitative knowledge of all the variables involved. Mathematical modelling and CFD (Computational Fluid Dynamics) simulations are used here to achieve a better comprehension of the flow dynamics and of the process of ice condensation and deposition in the condenser, in order to evaluate condenser efficiency and gain deeper insights of the process to be used for the improvement of its design. Both a complete laboratory-scale freeze-drying apparatus and an industrial-scale condenser have been investigated in this work, modelling the process of water vapour deposition. Different operating conditions have been considered and the influence exerted by the inert gas as well as other parameters has been investigated. © 2013 Indian Academy of Sciences.

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Petitti, M., Barresi, A. A., & Marchisio, D. L. (2013). CFD modelling of condensers for freeze-drying processes. Sadhana - Academy Proceedings in Engineering Sciences, 38(6), 1219–1239. https://doi.org/10.1007/s12046-013-0155-z

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