Tangential Fluid Flow in a Convective Dryer with Drying Technology Using Nebulization

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F20%3A00344833" target="_blank" >RIV/68407700:21220/20:00344833 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.48158/MeCCE-14.DG.10.08" target="_blank" >https://doi.org/10.48158/MeCCE-14.DG.10.08</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.48158/MeCCE-14.DG.10.08" target="_blank" >10.48158/MeCCE-14.DG.10.08</a>

Result language

angličtina

Original language name

Tangential Fluid Flow in a Convective Dryer with Drying Technology Using Nebulization

Original language description

Research focuses on tangential fluid flow of air inside a dryer. Nebulisation drying technology is used in this case to produce dewatered protein nanoparticles. The fluid containing protein particles is mixed with a supercritical fluid (carbon dioxide) and transported into the drying chamber under high pressure. The advantage of technology is low temperature of the drying air, usually in the range of 40 to 60 °C. It leads to lower energy consumption used to heat the drying air by comparison with conventional convective drying. The aim is to compare tangential fluid flow under different operational conditions of the dryer using nebulisation drying technology and to evaluate the most suitable option to provide uniform and required distribution of the air based on the data obtained from experiments and numerical simulations. In this contribution, two configurations of the dryer are presented, both with a unique arrangement of four tangential inlets which are located on top of the drying chamber around its perimeter. Firstly, experiments are performed and subsequently numerical simulations are used to validate the experimental data. Velocity field is measured by a hand-operated hot wire anemometer. Ansys-Fluent and OpenFOAM are used as CFD software in the numerical simulation part of the research. A structured grid is created and a two equation model of turbulence is applied, specifically k-ε. Boundary conditions are defined based on the experimental data (velocity, mass flow rate). Experiments and numerical simulations are evaluated and compared. In the first case, configuration A, data obtained from experiments do not correspond with results of numerical simulation. In the second case, configuration B, a match of the experimental data and results of numerical simulation is achieved though the same turbulence model is applied as in the first case.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20402 - Chemical process engineering

Project

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Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

14th Mediterranean Congress of Chemical Engineering

ISBN

978-84-09-25244-2

ISSN

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e-ISSN

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Number of pages

2

Pages from-to

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Publisher name

Sociedad Española de Química Industrial e Ingeniería Química

Place of publication

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Event location

Barcelona

Event date

Nov 16, 2020

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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