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