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109883

THIN LAYER DRYING OF GARLIC SLICES USING CONVECTION AND COMBINED (CONVECTION - INFRARED) HEATING MODES

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Last updated: 04 Jan 2025

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Processing Engineering of Agricultural Products

Abstract

Thin layer drying of garlic slices has been studied under convection and combined infrared–convection heating modes. Four levels of inlet air temperature 45, 55, 65, and 75°C and three levels of air velocity of 0.25, 0.75, and 1.25 m/s were used for the convection drying experiments. While, for the combined infrared-convection, three levels of radiation intensity of about 0.075, 0.15 and 0.225 W cm-2 and three levels of air temperatures 45, 55 and 65°C were studied at inlet air velocity of 0.75 m/s. Three mathematical models (Page, Modified Page, and Henderson and Pabis) were examined for describing the drying behavior of garlic slices under the above mentioned experimental parameters. The results were compared to their goodness of fit in terms of coefficient of determination (R2), Standard deviation (SD), average percentage of error (% E), chi-square (χ2) and the modeling efficiency (EF). The results showed increases in drying rate, thermal efficiency, rehydration ratio, flavor strength, and colour difference, and showed decreases in drying time and specific energy consumption for the combined (infrared–convection) heating mode in comparison with convection only. The Page model satisfactorily described the drying behavior of garlic slices and predicted the changes in garlic slices moisture content as compared with the modified Page and the Henderson and Pabis models. Meanwhile, for the convection heating mode, the drying constant (k) increased with the increase of air temperature and air velocity while, the constant (n) decreased, while, for the combined mode, the drying constant (k) increased with the increase of radiation intensity and air temperature. However, the constant (n)decreased.

DOI

10.21608/mjae.2009.109883

Authors

First Name

A.

Last Name

Abdelmotaleb.

MiddleName

-

Affiliation

Prof., and Head of Ag. Eng. Dept., Fac. of Ag., Kaferelsheikh Univ., Egypt.

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City

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Orcid

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First Name

M. M.

Last Name

El-Kholy

MiddleName

-

Affiliation

Senior Researcher, Ag. Eng. Res. Institute, Ag. Res. Center, Dokki, Egypt.

Email

-

City

-

Orcid

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First Name

N. H.

Last Name

Abou-El-Hana

MiddleName

-

Affiliation

Lecturer, Ag. Eng. Dept., Fac. of Ag., Kaferelsheikh Univ., Egypt.

Email

-

City

-

Orcid

-

First Name

M. A.

Last Name

Younis

MiddleName

-

Affiliation

Ag. Eng., Ag. Eng. Res. Institute, Ag. Res. Center, Dokki, Giza, Egypt.

Email

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City

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Orcid

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Volume

26

Article Issue

1

Related Issue

16679

Issue Date

2009-01-01

Receive Date

2020-08-28

Publish Date

2009-01-01

Page Start

251

Page End

281

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 26_Issue 1_Pages 251-281.pdf

PDF . 537.6kB

Link

https://mjae.journals.ekb.eg/article_109883.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=109883

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14

Type

Original Article

Type Code

1,326

Publication Type

Journal

Publication Title

Misr Journal of Agricultural Engineering

Publication Link

https://mjae.journals.ekb.eg/

MainTitle

THIN LAYER DRYING OF GARLIC SLICES USING CONVECTION AND COMBINED (CONVECTION - INFRARED) HEATING MODES

Details

Type

Article

Created At

23 Jan 2023