Natural convection heat transfer in a vertical concentric annulus
Author
Source
Issue
Vol. 13, Issue 2 (30 Jun. 2007), pp.1417-1427, 11 p.
Publisher
University of Baghdad College of Engineering
Publication Date
2007-06-30
Country of Publication
Iraq
No. of Pages
11
Main Subjects
Abstract AR
أجريت تجارب عملية لدراسة انتقال الحرارة الموقعي و المعدل بالحمل الحر بتجويف حلقي بين أسطوانتين متحدتي المركز بالوضع العمودي, نسبة نصف القطر لهما تعادل 0.555 و بطول 1.2 متر.
سخنت الأسطوانة الداخلية تحت فيض حراري ثابت, بينما عرضت الأسطوانة الخارجية إلى درجة حرارة الجو.
تغطي الدراسة مدى للفيض الحراري يتراوح من 58.2 W/m2 إلى 274.31 W/m2.
بينت النتائج زيادة معدلات الحمل الحر بزيادة الفيض الحراري مما يؤدي إلى تحسين معامل انتقال الحرارة.
Abstract EN
Experiments were carried out to study the local and average heat transfer by natural convection in a vertical concentric cylindrical annulus.
The experimental setup consists of an annulus has a radius ratio of 0.555 and inner cylinder with a heated length 1.2 m subjected to the constant heat flux while the outer cylinder is subjected to the ambient temperature.
The investigation covers heat flux range from 58.2 W / m2 to 274.31 W / m2.
Results show an increase in the natural convection as heat flux increases leads to an improve in the heat transfer process.
An empirical equation of average Nusselt number as a function of Raylieh number was deduced.
American Psychological Association (APA)
Muhammad, Aqil Abd Allah. 2007. Natural convection heat transfer in a vertical concentric annulus. Journal of Engineering،Vol. 13, no. 2, pp.1417-1427.
https://search.emarefa.net/detail/BIM-339914
Modern Language Association (MLA)
Muhammad, Aqil Abd Allah. Natural convection heat transfer in a vertical concentric annulus. Journal of Engineering Vol. 13, no. 2 (Jun. 2007), pp.1417-1427.
https://search.emarefa.net/detail/BIM-339914
American Medical Association (AMA)
Muhammad, Aqil Abd Allah. Natural convection heat transfer in a vertical concentric annulus. Journal of Engineering. 2007. Vol. 13, no. 2, pp.1417-1427.
https://search.emarefa.net/detail/BIM-339914
Data Type
Journal Articles
Language
English
Notes
Includes appendices: p. 1424-1427
Record ID
BIM-339914