Effect of using combined square nozzle and winglet with helical tape on thermal characteristics in tube heat exchanger

Other Title(s)

تأثير استخدام المركب لفوهة مربعة ذو جنيح مع شريط حلزوني على الخصائص الحرارية في أنبوب مبادل حراري

Joint Authors

Abd al-Munim, Abd al-Munim Rad
Ahmad, Isra Sad
Hushi, Hisham Asi

Source

al-Khwarizmi Engineering Journal

Issue

Vol. 14, Issue 4 (31 Dec. 2018), pp.64-71, 8 p.

Publisher

University of Baghdad al-Khwarizmi College of Engineering

Publication Date

2018-12-31

Country of Publication

Iraq

No. of Pages

8

Main Subjects

Electronic engineering
Mechanical Engineering

Abstract EN

Influence of combined square nozzle with helical tape inserted in a constant heat flux tube on heat transfer enhancement for turbulent airflow for Reynolds number ranging from 7000 to 14500 were investigated experimentally. Three different pitch ratios for square nozzle (PR = 5.8, 7.7 and 11.6) according to three different numbers of square nozzle (N = 3, 4 and 5) and constant pitch ratios for helical tape were used.

The results observed that the Nusselt number and friction factor for combination with winglets were found to be up to 33.8 % and 21.4 %, respectively higher than nozzle alone for pitch ratio PR=5.8.

The maximum value of thermal performance for using combination with winglets was about 1.351 for pitch ratio= 5.8.

Nusselt number and friction factor correlations from experimental data were developed for turbulent flow.

American Psychological Association (APA)

Hushi, Hisham Asi& Ahmad, Isra Sad& Abd al-Munim, Abd al-Munim Rad. 2018. Effect of using combined square nozzle and winglet with helical tape on thermal characteristics in tube heat exchanger. al-Khwarizmi Engineering Journal،Vol. 14, no. 4, pp.64-71.
https://search.emarefa.net/detail/BIM-853316

Modern Language Association (MLA)

Hushi, Hisham Asi…[et al.]. Effect of using combined square nozzle and winglet with helical tape on thermal characteristics in tube heat exchanger. al-Khwarizmi Engineering Journal Vol. 14, no. 4 (Dec. 2018), pp.64-71.
https://search.emarefa.net/detail/BIM-853316

American Medical Association (AMA)

Hushi, Hisham Asi& Ahmad, Isra Sad& Abd al-Munim, Abd al-Munim Rad. Effect of using combined square nozzle and winglet with helical tape on thermal characteristics in tube heat exchanger. al-Khwarizmi Engineering Journal. 2018. Vol. 14, no. 4, pp.64-71.
https://search.emarefa.net/detail/BIM-853316

Data Type

Journal Articles

Language

English

Notes

Includes bibliographical references : p. 70

Record ID

BIM-853316