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268479

EVALUATION OF DIFFERENT SOLAR DRYERS AND ITS APPLICATIONS IN JEW'S MALLOW DRYING

Article

Last updated: 26 Dec 2024

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Subjects

-

Tags

Processing Engineering of Agricultural Products

Abstract

The shortages in conventional fuels along with the continuous rise in their prices have led to an increased emphasis on using solar energy as an alternative source of energy. Thereto, the objective of this study was to evaluate the thermal efficiency of three different types of greenhouse solar dryers and test their performance in Corchorus olitarius drying. Three different greenhouses namely Quonset, Gable-even span and Gothic arch were constructed and tested without load under different air flow rates (0.38, 0.57 and 0.855 kg s-1). The appropriate air flow rate which gives higher thermal efficiency was then applied to investigate the performance of the constructed dryers for drying the fresh Jew's mallow. The results indicated that the thermal efficiency of the dryers increased when the air flow rate decreased. The Quonset dryer reported a higher value of thermal efficiency of 58.48% under the lower air flow rate of 0.38 kg s-1. Consequently, the Quonset dryer showed higher moisture removal of the Jew's mallow during drying. After 16 hours of drying, the moisture content of Jew's mallow decreased from initial moisture of 13.29 (kg water/kg dry matter) to less than 0.5 (kg water/kg dry matter). Meanwhile, the moisture content of the Jew's mallow samples in ambient air was still higher than 1.2 (kg water/kg dry matter) after the same drying time. These results emphasize the importance of using solar dryers, especially the Quonset greenhouse dryer, for the fast and safe drying process of agricultural products.

DOI

10.21608/mjae.2022.155153.1083

Keywords

solar dryer, Greenhouse dryer, Thermal Efficiency, Jew's mallow, Drying rate

Authors

First Name

Ramadan

Last Name

A. El-Gamal

MiddleName

-

Affiliation

Assoc. Prof., Ag. Eng. Dept., Fac. of Ag., Suez Canal U., 41522 Ismailia, Egypt.

Email

ramadan_emara@agr.suez.edu.eg

City

Ismaillia

Orcid

-

First Name

Solaf

Last Name

Abd El-Reheem

MiddleName

S.

Affiliation

Senior researcher at the Ag. Eng. Res. Inst (AEnRI), Giza, Egypt.

Email

solafsayed@hotmail.com

City

Giza

Orcid

-

First Name

Sameh

Last Name

Kishk

MiddleName

S.

Affiliation

Assoc. Prof., Ag. Eng. Dept., Fac. of Ag., Suez Canal U., 41522 Ismailia, Egypt.

Email

s.kishk2011@yahoo.com

City

-

Orcid

-

Volume

40

Article Issue

1

Related Issue

38546

Issue Date

2023-01-01

Receive Date

2022-08-11

Publish Date

2023-01-01

Page Start

21

Page End

34

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 40_Issue 1_Pages 21-34.pdf

PDF . 1.4MB

Link

https://mjae.journals.ekb.eg/article_268479.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=268479

Order

2

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

EVALUATION OF DIFFERENT SOLAR DRYERS AND ITS APPLICATIONS IN JEW'S MALLOW DRYING

Details

Type

Article

Created At

23 Jan 2023