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:: Volume 8, Issue 2 (summer 1400 2021) ::
تبدیل انرژی 2021, 8(2): 1-14 Back to browse issues page
Natural convection heat transfer of pair of horizontal cam tubes in vertical array submerged in a water tank: An experimental investigation
Mohammad Najafi *1, Ali JavadPour2
1- Islamic Azad University, Mechanical engineering, Tehran , mohammad36najafi@gmail.com
2- Islamic Azad University, Mechanical engineering, Tehran
Abstract:   (170 Views)
In the present study, the steady-state natural convection heat transfer from a vertical array of a pair of horizontal cam cross-sectional tubes under constant heat flux submerged in water is experimentally investigated. The experiment is carried out for the modified Rayleigh number range of to, and a dimensionless tube spacing range of 1.5, 2.0, and 2.5. The effects of the modified Rayleigh number, cam tube orientation, and dimensionless spacing on the heat transfer rate from the individual tube and the vertical tube array are studied. Based on the results obtained, the effect of thermal plume on the heat transfer rate from the upper cam tube in the vertical array is strongly dependent on the dimensionless spacing. Under fixed conditions, the mean convection coefficient of the single horizontal cam tube with the downward orientation is higher than that of the other orientations for all the modified Rayleigh numbers considered.
Keywords: Natural convection, Horizontal cam tubes, Vertical array
Full-Text [PDF 1019 kb]   (78 Downloads)    
Type of Study: Research | Subject: Heat and Mass Transfer
Received: 2021/02/20 | Accepted: 2021/08/27 | Published: 2021/09/1
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Najafi M, JavadPour A. Natural convection heat transfer of pair of horizontal cam tubes in vertical array submerged in a water tank: An experimental investigation. تبدیل انرژی. 2021; 8 (2) :1-14
URL: http://jeed.iaud.ac.ir/article-1-349-en.html


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Volume 8, Issue 2 (summer 1400 2021) Back to browse issues page
مجله علمی تخصصی مهندسی مکانیک تبدیل انرژی Journal of Energy Conversion
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