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157435

Investigation of Heat Transfer and Friction Characteristics in a Circular Tube Fitted with Conical Rings Having Internal Fins.

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Last updated: 04 Jan 2025

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Tags

Mechanical Power Engineering

Abstract

The paper deals with an experimental study of the influence of conical rings with internal fins inserts on heat transfer and friction characteristics in a circular tube. In the present work, the conical rings with internal fins are placed in the test tube section with five different diameter ratios of the ring to tube diameter (d/D = 0.5, 0.6, 0.7) and for each ratio, the rings are placed with three different arrangements, converging conical ring, CR array, diverging conical ring, DR array and converging-diverging conical ring, CDR array. In the experiment, cold air at ambient condition is passed through the uniform heat flux circular tube for Reynolds numbers in a range of 8000 to 32464. The results indicate that the effect of the reverse flows, ring to tube diameter ratio and the ring arrays can improve the heat transfer rate in the tube. Also, the experimental results demonstrate that the use of conical ring with internal fins inserts leads to a higher heat transfer rate than that of the plain surface tube, and the diverging conical ring array yields a better heat transfer than the others. The results are also correlated in the form of Nusselt number and friction factor as a function of Reynolds number, and diameter ratio. 

DOI

10.21608/bfemu.2021.157435

Keywords

Enhancement of heat transfer, circular tube, conical ring

Authors

First Name

E.

Last Name

Ibrahim

MiddleName

Z.

Affiliation

Faculty of Engineering., Zagazig University., 44519, Zagazig., Egypt.

Email

-

City

Zagazig

Orcid

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Volume

37

Article Issue

3

Related Issue

17852

Issue Date

2012-09-01

Receive Date

2012-03-17

Publish Date

2021-03-17

Page Start

20

Page End

42

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 37_Issue 3_Pages 20-42.pdf

PDF . 586.7kB

Link

https://bfemu.journals.ekb.eg/article_157435.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=157435

Order

11

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

Investigation of Heat Transfer and Friction Characteristics in a Circular Tube Fitted with Conical Rings Having Internal Fins.

Details

Type

Article

Created At

22 Jan 2023