Experimental and numerical investigations on freeze-drying of porous media with prebuilt porosity

Wei Wang; Jing Yang; Dapeng Hu; Yanqiu Pan; Shihao Wang; Guohua Chen

doi:10.1016/j.cplett.2018.04.008

Experimental and numerical investigations on freeze-drying of porous media with prebuilt porosity

Wei Wang^*, Jing Yang, Dapeng Hu, Yanqiu Pan, Shihao Wang, Guohua Chen

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

19 Citations (Scopus)

Abstract

Freeze-drying of initially porous frozen material was investigated aimed at improving the process economics by reducing drying time and raising productivity. Experimental results showed that freeze-drying can be significantly enhanced by the frozen material with prebuilt porosity, and about 31% of drying time can be saved compared with the conventionally solid frozen material under the tested operating conditions. A multiphase transport model was formulated based on the local mass non-equilibrium assumption. Numerical results showed excellent agreements between measured and predicted drying curves. Analyses of saturation and temperature profiles displayed that volumetric sublimation-desorption can occur for the initially porous frozen material.

Original language	English
Pages (from-to)	80-87
Journal	Chemical Physics Letters
Volume	700
DOIs	https://doi.org/10.1016/j.cplett.2018.04.008
Publication status	Published - 16 May 2018
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Adsorption
Drying time
Initial saturation
Mass transfer
Sublimation-desorption

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title = "Experimental and numerical investigations on freeze-drying of porous media with prebuilt porosity",

abstract = "Freeze-drying of initially porous frozen material was investigated aimed at improving the process economics by reducing drying time and raising productivity. Experimental results showed that freeze-drying can be significantly enhanced by the frozen material with prebuilt porosity, and about 31% of drying time can be saved compared with the conventionally solid frozen material under the tested operating conditions. A multiphase transport model was formulated based on the local mass non-equilibrium assumption. Numerical results showed excellent agreements between measured and predicted drying curves. Analyses of saturation and temperature profiles displayed that volumetric sublimation-desorption can occur for the initially porous frozen material.",

keywords = "Adsorption, Drying time, Initial saturation, Mass transfer, Sublimation-desorption",

author = "Wei Wang and Jing Yang and Dapeng Hu and Yanqiu Pan and Shihao Wang and Guohua Chen",

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T1 - Experimental and numerical investigations on freeze-drying of porous media with prebuilt porosity

AU - Wang, Wei

AU - Yang, Jing

AU - Hu, Dapeng

AU - Pan, Yanqiu

AU - Wang, Shihao

AU - Chen, Guohua

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2018/5/16

Y1 - 2018/5/16

N2 - Freeze-drying of initially porous frozen material was investigated aimed at improving the process economics by reducing drying time and raising productivity. Experimental results showed that freeze-drying can be significantly enhanced by the frozen material with prebuilt porosity, and about 31% of drying time can be saved compared with the conventionally solid frozen material under the tested operating conditions. A multiphase transport model was formulated based on the local mass non-equilibrium assumption. Numerical results showed excellent agreements between measured and predicted drying curves. Analyses of saturation and temperature profiles displayed that volumetric sublimation-desorption can occur for the initially porous frozen material.

AB - Freeze-drying of initially porous frozen material was investigated aimed at improving the process economics by reducing drying time and raising productivity. Experimental results showed that freeze-drying can be significantly enhanced by the frozen material with prebuilt porosity, and about 31% of drying time can be saved compared with the conventionally solid frozen material under the tested operating conditions. A multiphase transport model was formulated based on the local mass non-equilibrium assumption. Numerical results showed excellent agreements between measured and predicted drying curves. Analyses of saturation and temperature profiles displayed that volumetric sublimation-desorption can occur for the initially porous frozen material.

KW - Adsorption

KW - Drying time

KW - Initial saturation

KW - Mass transfer

KW - Sublimation-desorption

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U2 - 10.1016/j.cplett.2018.04.008

DO - 10.1016/j.cplett.2018.04.008

M3 - RGC 21 - Publication in refereed journal

SN - 0009-2614

VL - 700

SP - 80

EP - 87

JO - Chemical Physics Letters

JF - Chemical Physics Letters

ER -

Experimental and numerical investigations on freeze-drying of porous media with prebuilt porosity

Abstract

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Research Keywords

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