Heat Transfer in a Column Packed With Spheres
Publish place: International Journal of Engineering (IJE)، Vol: 2، Issue: 3
Publish Year: 1368
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:
JR_IJE-2-3_011
تاریخ نمایه سازی: 17 بهمن 1400
Abstract:
The purpose of the study is to investigate average and local surface heat transfer coefficients in a cylinder packed with spheres. Here the term «local» applies to a single sphere within the bed. Averages are derived from the sixteen different spheres that were instrumented and distributed throughout the bed. The experimental technique consisted of introducing a step - wise change in the temperature of air flowing through the bed and recording the resulting air and ball temperature transients within the bed over a range of Reynolds numbers. An overall correlation of heat transfer with Reynolds number is derived and compared to others available in the literature, and comment is given on the observed patterns in the local coefficients. Comparison is made to theoretical transients.
Authors
Esmaeil Khoshravan-Azar
Mechanical Engineering, University of Tabriz