Design of a Vacuum Dryer Based on Experimental Data From Atmospheric Drying
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F25%3A00387002" target="_blank" >RIV/68407700:21220/25:00387002 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1115/1.4067928" target="_blank" >https://doi.org/10.1115/1.4067928</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1115/1.4067928" target="_blank" >10.1115/1.4067928</a>
Alternative languages
Result language
angličtina
Original language name
Design of a Vacuum Dryer Based on Experimental Data From Atmospheric Drying
Original language description
This article investigates the influence of operating pressure on heat transfer in indirect dryers, focusing on the possibility of using data gathered from atmospheric experiments for the design and operation of a vacuum dryer, thereby simplifying the design process. The penetration model describing indirect drying was used to determine the drying rate for both atmospheric and vacuum conditions. A relation between operating pressure and the overall heat transfer coefficient for indirect dryers was found and described by an equation in the form of a power function. The proposed solution was experimentally verified on an experimental horizontal paddle dryer where a series of experiments were carried out with porous cereal feed pellets with an initial moisture content ranging from 22.6%(db) to 35.3%(db) for both the atmospheric and vacuum drying. In this way, it is possible to predict the value of the overall heat transfer coefficient, drying rate, and drying curve for vacuum drying according to the results of experiments performed at atmospheric pressure. The number and complexity of experimental verification tests required for the design of a new dryer can thus be significantly reduced. The proposed equation can also be used for optimization of the drying process of an existing dryer, which can reduce drying time and save energy.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20303 - Thermodynamics
Result continuities
Project
<a href="/en/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Research centre for low-carbon energy technologies</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Thermal Science and Engineering Applications
ISSN
1948-5085
e-ISSN
1948-5093
Volume of the periodical
17
Issue of the periodical within the volume
4
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
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UT code for WoS article
001566763600002
EID of the result in the Scopus database
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