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103097

Experimental Investigation of Natural Convection Heat Transfer through Rectangular Enclosure Filled with TiO2-Water Nanofluid.

Article

Last updated: 04 Jan 2025

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Subjects

-

Tags

Mechanical Power Engineering

Abstract

Experimental investigations on natural convection heat transfer have been carried out inside rectangular enclosures filled with TiO2- water nanofluid. Two enclosures are used with two different aspect ratios of 1 and 2 and the modified Rayleigh number based on the enclosure height in the range . The bottom surface of the enclosure is heated using a constant heat flux in the range from 40 to 6600 W/m2 while the upper surface is cooled by forced air stream, and side walls are insulated. The heat transfer rate for aspect ratio, AR=2, is higher than that for the aspect ratio A= 1. The average temperature of hot surface decreases with the increase of   nanoparticles volume concentration, , up to minimum values at   =0.8 % and then increases with further increase in . The average hot surface temperature increases with the increase in the modified Rayleigh number. The heat transfer rate increases with the increase of   the modified Rayleigh number up to maximum values of about and then decreases with further increase in . The highest value of the average Nusselt number is located at = 0.8%. A general correlation is obtained for calculating the average heat transfer rate as a function of modified Rayleigh number and nanoparticles volume concentration.

DOI

10.21608/bfemu.2020.103097

Keywords

heat transfer, Rectangular enclosure, Experimental analyses, TiO2– water nanofluid

Authors

First Name

Amro

Last Name

Abou Elenein

MiddleName

-

Affiliation

Researcher at Mechanical Power Engineering Department., Faculty of Engineering., Mansoura.

Email

-

City

-

Orcid

-

First Name

Ahmed

Last Name

Sultan

MiddleName

A.

Affiliation

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

Email

-

City

Mansoura

Orcid

-

First Name

Hesham

Last Name

Mostafa

MiddleName

M.

Affiliation

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

Email

dr.heshammostafa@yahoo.com

City

-

Orcid

-

First Name

Ahmed

Last Name

Hegazi

MiddleName

-

Affiliation

Associate Professor., Mechanical Engineering Department., El-Mansoura University., CO 35516., Egypt.

Email

ahmedabd_elsallam@yahoo.com

City

Mansoura

Orcid

-

Volume

39

Article Issue

1

Related Issue

15575

Issue Date

2014-03-01

Receive Date

2014-01-04

Publish Date

2020-07-15

Page Start

39

Page End

48

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 39_Issue 1_Pages 39-48.pdf

PDF . 1.1MB

Link

https://bfemu.journals.ekb.eg/article_103097.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=103097

Order

6

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

Experimental Investigation of Natural Convection Heat Transfer through Rectangular Enclosure Filled with TiO2-Water Nanofluid.

Details

Type

Article

Created At

22 Jan 2023