An experimental study on heat transfer enhancement for porous heat exchange in rectangular duct
Other Title(s)
دراسة تجريبية لزيادة انتقال الحرارة لتبادل حراري مسامي في مجرى مستطيل المقطع
Joint Authors
Hilal, Kifah H.
Salih, Adil M.
Ibrahim, Muntaha H.
Source
Engineering and Technology Journal
Issue
Vol. 32, Issue 11A (30 Nov. 2014), pp.2788-2802, 15 p.
Publisher
Publication Date
2014-11-30
Country of Publication
Iraq
No. of Pages
15
Main Subjects
Topics
Abstract AR
انتقال الحرارة بالحمل القسري للھواء المار خلال مجرى مسامي مستطیل المقطع تم دراستھ ، عملیا في ھذا البحث .
تتكون الحشوة من مشبك سلكي معدني متعرج بمسامیة تتراوح بین( 0.97 17323 , 12497 , 7682 ) وفیض حراري ) ( Re) 0.99 ) .
اجریت التجارب لرقم رینولدز یزداد بزیادة رقم ( Nu) 422 , 297 , 192 واط / م 2 ) .
بینت النتائج ان رقم نسلت ) ( q ) ثابت ولكن یقل بزیادة مسامیة الحشوة ( ) .
رقم نسلت للمجرى ( q) والفیض الحراري ( Re ) رینولدز المسامي یزداد بمقدار ( % 144 ) عند ( 0.97 = ) و ( % 72 ) عند ( 0.99 = ) عند مقارنتھ مع المجرى الخالي من الحشوة عند نفس الظروف التشغیلیة ومن المفاضلة بین الزیادة في انتقال مسامي ) / وزن الحشوة - Nu خالي Nu )] الحرارة ووزن الحشوة المضافة الى المجرى الخالي ، وجد ان المضافة] یساوي ( 84.34 ) و ( 40.49 ) عند مسامیة ( 0.99 ) و ( 0.97 ) على التوالي وھذا یعتبر
Abstract EN
Forced convection heat transfer of air in porous rectangular duct was investigated experimentally .
The pad consist of (zig-zag ) metallic wire mesh insert with two different porosities ( ) namely ( 0.97 ) and ( 0.
99) .The experiments were carried out for Reynolds number (7682,12497 and 17323 ) and constant heat flux (192,297 and 422 W/m2 ) .The results indicated that Nusselt number was increased with increasing Reynolds number and heat flux but decreased with increasing pad porosity .The Nusselt number in the porous duct was increased up to (144 % ) for ( = 0.
97) and (72 % ) for ( = 0.
99) when compared to clear duct at the same tested condition .
For optimization between heat transfer enhancement and pad weight added into clear duct , it is found that [ (Nuporous - Nuclear ) / weight of pad ] equal to (84.
34 ) and ( 40.
49 ) for ( = 0.
99 and = 0.
97) respectively and this is good improvement in heat transfer through porous rectangular duct and reducing size and weight of original duct .
American Psychological Association (APA)
Hilal, Kifah H.& Salih, Adil M.& Ibrahim, Muntaha H.. 2014. An experimental study on heat transfer enhancement for porous heat exchange in rectangular duct. Engineering and Technology Journal،Vol. 32, no. 11A, pp.2788-2802.
https://search.emarefa.net/detail/BIM-516302
Modern Language Association (MLA)
Hilal, Kifah H.…[et al.]. An experimental study on heat transfer enhancement for porous heat exchange in rectangular duct. Engineering and Technology Journal Vol. 32, no. 11A (2014), pp.2788-2802.
https://search.emarefa.net/detail/BIM-516302
American Medical Association (AMA)
Hilal, Kifah H.& Salih, Adil M.& Ibrahim, Muntaha H.. An experimental study on heat transfer enhancement for porous heat exchange in rectangular duct. Engineering and Technology Journal. 2014. Vol. 32, no. 11A, pp.2788-2802.
https://search.emarefa.net/detail/BIM-516302
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 2802
Record ID
BIM-516302