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101193

MODELLING A MICROWAVE/CONVECTION DRYER FOR DRYING OF POTATO SLICES

Article

Last updated: 26 Dec 2024

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Subjects

-

Tags

Processing Engineering of Agricultural Products

Abstract

The aim of the present study is modeling a developed microwave/convection dryer using similitude analysis for drying a thin layer of potato slices (Solanum Tuberosum), which can be helpful in design and operation criterion of this developed thin layer dryer type for drying other agricultural products. Drying time as affected by microwave power and drying air temperature, effective diffusivity "Deff", compatibility of experimental data to Lewis Newton's thin layer drying model and rehydration and color as quality indicators were also studied. Four different levels of microwave power, namely: 85, 175, 250 and 320W, three different drying air temperatures of drying air are 40, 50 and 60oC with air velocity of 1.5 m/s were studied. The results show that the drying time was decreased by increasing microwave power and air temperature. The effective moisture diffusivity "Deff" increased with decreasing moisture content, maximum values of "Deff" were recorded at highest microwave power of 320 W. Lewis Newton's thin layer drying model was highly compatible to experimental data with R2 ranging between 0.754 to 1.00. The rehydration ratios ranged between 2.19 to 3.41 under various drying conditions. There is no significant change in color of the dried potato compared to fresh potato slices

DOI

10.21608/mjae.2012.101193

Authors

First Name

Samir

Last Name

Tayel

MiddleName

-

Affiliation

Prof. of Ag. Eng., Fac. of Ag., Al-Azhar Univ., Cairo, Egypt.

Email

samir_tayel@yahoo.com

City

-

Orcid

-

First Name

T. H.

Last Name

Ghanem

MiddleName

-

Affiliation

Prof. of Ag. Eng., Fac. of Ag., Al-Azhar Univ., Cairo, Egypt.

Email

-

City

-

Orcid

-

First Name

A. A.

Last Name

El-Messery

MiddleName

-

Affiliation

Prof. of Ag. Eng., Fac. of Ag., Al-Azhar Univ., Cairo, Egypt.

Email

-

City

-

Orcid

-

First Name

M.M.

Last Name

Badr

MiddleName

-

Affiliation

Assist. Lecturer of Ag. Eng., Fac. of Ag., Al-Azhar Univ., Cairo, Egypt.

Email

-

City

-

Orcid

-

Volume

29

Article Issue

4

Related Issue

15268

Issue Date

2012-10-01

Receive Date

2020-07-07

Publish Date

2012-10-01

Page Start

1,377

Page End

1,398

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 29_Issue 4_Pages 1377-1398.pdf

PDF . 642.8kB

Link

https://mjae.journals.ekb.eg/article_101193.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=101193

Order

8

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

MODELLING A MICROWAVE/CONVECTION DRYER FOR DRYING OF POTATO SLICES

Details

Type

Article

Created At

23 Jan 2023