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198907

Heat and Mass Transfer from Moist Air Flowing inside Cold Horizontal Circular Duct I-Theoretical Study.

Article

Last updated: 22 Jan 2023

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Subjects

-

Tags

Mechanical Power Engineering

Abstract

Heat and mass transfer from moist air flowing inside cold horizontal circular duct is investigated theoretically. In the present theoretical model, the flow of air inside the cold horizontal circular duct is assumed to be laminar and steady in cylindrical coordinates. The governing equations are the continuity, momentum, energy and concentration equations. These governing equations are put in the dimensionless form. By introducing new proper independent and dependent variables, the governing equations are transformed to a set of dimensionless differential equations. A computer program in FORTRAN language is developed to solve this set of equations to determine the distribution of the dimensionless velocity, temperature and concentration. Also, local values of Nusselt and Sherwood numbers for different vales of process parameters are calculated. These parameters are presented by the following dimensionless physical quantities; Prandtl, Schmidt, and Reynolds numbers.
The present results show that, the average values of Nusselt and Sherwood numbers increase with increasing Reynolds number. Nusselt number increases with increasing prandtl number. Also, Sherwood number increases with increasing Schmidt number. Comparison between the obtained theoretical results and the previous experimental works show good agreement. Two empirical correlations for Nusselt and sherwood numbers are obtained as functions of Reynolds number and other operating parameters.

DOI

10.21608/bfemu.2021.198907

Keywords

heat and mass transfer, Moist air and Horizontal circular duct

Authors

First Name

Hesham

Last Name

Mostafa

MiddleName

M.

Affiliation

Mechanical Engineering Department., Higher Technological Institute., Tenth of Ramadan City., Egypt.

Email

drheshammostafa@yahoo.com

City

Tenth of Ramadan

Orcid

-

First Name

Mohamed

Last Name

Saafan

MiddleName

Ghassoub

Affiliation

Mechanical Power Engineering Department., Faculty of Engineering., El-Mansoura University., Mansoura., Egypt

Email

mgmousa@mans.edu.eg

City

Mansoura

Orcid

-

Volume

31

Article Issue

4

Related Issue

19225

Issue Date

2006-12-01

Receive Date

2006-10-10

Publish Date

2021-10-10

Page Start

25

Page End

35

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 31_Issue 4_Pages 25-35.pdf

PDF . 1.3MB

Link

https://bfemu.journals.ekb.eg/article_198907.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=198907

Order

13

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

22 Jan 2023