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105936

MODELING OF REFRACTANCE WINDOW FILM DRYER FOR LIQUIDS

Article

Last updated: 04 Jan 2025

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Tags

Processing Engineering of Agricultural Products

Abstract

The aim of the present study is to develop mathematical analysis of a film dryer or refractance type dryer that helps in design, operation, modification, evaluating drying time and rates, improving quality and increasing energy efficiency. Strawberries juice was used as an example of liquid foods. For justifying this purpose a pilot plant refractance window dryer was designed. A film of juice with an initial thickness of approximately 3 mm, was applied on a hot glass plate heated by water underneath, that continuously contacts it. Nine experiments were conducted, namely: three variable flow rates per unit surface area of the dryer, 0.25, 0.21 and 0.18 m3/m2.s , and also three different levels of heating rates for each flow rate were also applied, i.e. 15.2 , 24.3 and 36.6kW/m2 respectively. Liquid strawberries drying time ranged between 0.77-0.90 h compared to 5 h for traditional hot-air dryer at 60 oC .The model is reasonably accepted for predicting the drying coefficient-elapsed time product and moisture ratio with coefficients of determination of 97%.

DOI

10.21608/mjae.2010.105936

Authors

First Name

T.H.

Last Name

Ghanem

MiddleName

-

Affiliation

Assoc. Prof., Agric. Eng.. Fac. of Agric., Al-Azhar Univ., Egypt.

Email

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City

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Orcid

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Volume

27

Article Issue

2

Related Issue

16013

Issue Date

2010-04-01

Receive Date

2020-08-01

Publish Date

2010-04-01

Page Start

676

Page End

687

Print ISSN

1687-384X

Online ISSN

2636-3062

Article File

MJAE_Volume 27_Issue 2_Pages 676-687.pdf

PDF . 608.3kB

Link

https://mjae.journals.ekb.eg/article_105936.html

Detail API

https://mjae.journals.ekb.eg/service?article_code=105936

Order

16

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

MODELING OF REFRACTANCE WINDOW FILM DRYER FOR LIQUIDS

Details

Type

Article

Created At

23 Jan 2023