Design of a Vacuum Dryer Based on Experimental Data From Atmospheric Drying

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Design of a Vacuum Dryer Based on Experimental Data From Atmospheric Drying

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Design of a Vacuum Dryer Based on Experimental Data From Atmospheric Drying

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

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OECD FORD obor

20303 - Thermodynamics

Projekt

<a href="/cs/project/EF16_019%2F0000753" target="_blank" >EF16_019/0000753: Centrum výzkumu nízkouhlíkových energetických technologií</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Journal of Thermal Science and Engineering Applications

ISSN

1948-5085

e-ISSN

1948-5093

Svazek periodika

17

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

001566763600002

EID výsledku v databázi Scopus

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