Experimental investigation of using new shape augmentations for enhancing heat transfer in heat exchangers
Other Title(s)
تحقيق عملي نبيان استخدام أدوات حشر جديدة الشكل لتحسين انتقال الحرارة في المبادلات الحرارية
Author
Source
Journal of Engineering and Sustainable Development
Issue
Vol. 21, Issue 6 (30 Nov. 2017), pp.80-91, 12 p.
Publisher
al-Mustansyriah University College of Engineering
Publication Date
2017-11-30
Country of Publication
Iraq
No. of Pages
12
Main Subjects
Engineering & Technology Sciences (Multidisciplinary)
Abstract EN
The present investigation aims to study experimentally the effect of using basket twisted bars as a new shape of turbulators in order to achieve better heat transfer inside tube heat exchangers.
In this study, air is used as a working fluid with six different values of flow rates (Reynolds number values vary from 6000 to 13500), while the value of heat flux is kept constant in this investigation.
In addition, the effect of spacing ratio (SR( between these turbulators is taken into account.
Therefore, 3, 4 and 5 pieces of these turbulators are distributed along the test section during experiments.
The results show that the heat transfer rate for all cases tends to increase with rising Reynolds number value, while the friction factor shows downward behavior with the same Reynolds number value.
In addition, it is found that (SR=4.2) gives maximum heat transfer rate with 115.9 % above plain tube case.
Friction factor values increase by 313%, 235% and 193% for SR= 4.2, 6.4 and 11 respectively comparing with plain tube).
The enhancement efficiency also increases when inserting baskets twisted bars with rates 127.5 %, 134.3 % and 139.8 % for SR= 11, 6.4 and 4.2 respectively.
American Psychological Association (APA)
Husayn, Nasr Fadil. 2017. Experimental investigation of using new shape augmentations for enhancing heat transfer in heat exchangers. Journal of Engineering and Sustainable Development،Vol. 21, no. 6, pp.80-91.
https://search.emarefa.net/detail/BIM-848656
Modern Language Association (MLA)
Husayn, Nasr Fadil. Experimental investigation of using new shape augmentations for enhancing heat transfer in heat exchangers. Journal of Engineering and Sustainable Development Vol. 21, no. 6 (Nov. 2017), pp.80-91.
https://search.emarefa.net/detail/BIM-848656
American Medical Association (AMA)
Husayn, Nasr Fadil. Experimental investigation of using new shape augmentations for enhancing heat transfer in heat exchangers. Journal of Engineering and Sustainable Development. 2017. Vol. 21, no. 6, pp.80-91.
https://search.emarefa.net/detail/BIM-848656
Data Type
Journal Articles
Language
English
Notes
Record ID
BIM-848656