Beta
ManageSearchChatDiscover
165571

Friction and Forced Convection Heat Transfer Characteristics in Tubes by Use of Helical-Wire-Coil Inserts.

Article

Last updated: 22 Jan 2023

OverviewSimilar Items

Subjects

-

Tags

Mechanical Power Engineering

Abstract

This work summarizes the results of experimental investigation of convective heat transfer and friction loss characteristics of air flow in a horizontal circular copper tube of diameters 13.5/22 mm., using helical wire-coils , of diameter 1.4 mm, inserted in. The helix angle (a) of the helical-wire-coil is varied from 65° to 86.7o. The outer surface of the test tube is heated by superheated steam (degree of superheat 2:3 oC) at atmospheric pressure. During the experimental work, Reynold's number is changed from 6000 to 120000 and Prandti number is about 0.7. The heat transfer enhancement of the inserted helical-wire-coil is ranging from 30 % to 145 %. However, A quantitatively increase in hydrodynamics resistance is noticed. Correlations of Nusselt number and friction factor has been made. It was found that the nusselt number and friction factor were dependent on both Reynold's number and helix angle. 
 

 
 


DOI

10.21608/bfemu.2021.165571

Authors

First Name

Ahmed

Last Name

Sultan

MiddleName

Abd El-Razik Ahmed

Affiliation

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

Email

-

City

Mansoura

Orcid

-

Volume

18

Article Issue

3

Related Issue

24035

Issue Date

1993-09-01

Receive Date

1993-07-11

Publish Date

2021-04-20

Page Start

63

Page End

74

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 18_Issue 3_Pages 63-74.pdf

PDF . 327.4kB

Link

https://bfemu.journals.ekb.eg/article_165571.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=165571

Order

15

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