Suscripción a Biblioteca: Guest
Portal Digitalde Biblioteca Digital eLibros Revistas Referencias y Libros de Ponencias Colecciones
Computational Thermal Sciences: An International Journal
ESCI SJR: 0.249 SNIP: 0.434 CiteScore™: 0.7

ISSN Imprimir: 1940-2503
ISSN En Línea: 1940-2554

Computational Thermal Sciences: An International Journal

DOI: 10.1615/ComputThermalScien.2018025026
pages 225-249

DESIGN AND PERFORMANCE EVALUATION OF AIR SOLAR CHANNELS WITH DIVERSE BAFFLE STRUCTURES

Younes Menni
Unite of Research on Materials and Renewable Energies - URMER - Department of Physics, Faculty of Sciences, Abou Bekr Belkaid University, BP 119-13000-Tlemcen, Algeria
Ahmed Azzi
Unit of Research on Materials and Renewable Energies – URMER, Abou Bekr Belkaid University, BP 119-13000-Tlemcen, Algeria; Department of Mechanical Engineering, Faculty of Technology, Abou Bekr Belkaid University, BP 230-13000-Tlemcen, Algeria

SINOPSIS

We conducted a detailed analysis of the baffle design and its impact on the convective phenomenon of heat transfer inside a solar air channel. Several differently shaped baffles [i.e., arc, cascaded, corrugated, diamond, rectangular (simple), trapezoidal, triangular, V-downstream, V-upstream, double V, and Z-shaped] with the same flow conditions were compared in a staggered manner. Our purpose is to explore the effect of these baffle geometries on the steady turbulent forced-convection flow behaviors inside a two-dimensional horizontal rectangular cross section channel. The thermo-aeraulic aspects are presented for Reynolds numbers based on the aeraulic diameter of the channel ranging from 12 × 103 to 32 × 103. The governing flow equations with the thermo-aerodynamic boundary conditions were solved by the finite volume method using the commercial CFD software FLUENT. The result analysis shows that the V-upstream–type baffle is the best design, which significantly decreases the skin friction loss, giving thus an augmentation in the thermal enhancement factor from 11.855 to 25.397% compared to the simple baffle.


Articles with similar content:

PRESSURE DROP AND HEAT TRANSFER IN SPIRALLY CORRUGATED TUBE FOR A COUNTER-FLOW HEAT EXCHANGER
ICHMT DIGITAL LIBRARY ONLINE, Vol.0, 2012, issue
Anchasa Pramuanjaroenkij, Apichart Chaengbamrung , Amarin Tongkratoke
Experimental Investigation of Heat Transfer and Friction Factor Characteristics in a Circular Tube with Longitudinal Strip Inserts
Journal of Enhanced Heat Transfer, Vol.15, 2008, issue 4
L. Syam Sundar, K. V. Sharma
HEAT TRANSFER ENHANCEMENT DUE TO SWIRL EFFECTS IN OVAL TUBES TWISTED ABOUT THEIR LONGITUDINAL AXIS
Journal of Enhanced Heat Transfer, Vol.20, 2013, issue 4
Raj M. Manglik, F. Bishara, Milind A. Jog
TURBULENT MIXED CONVECTIVE HEAT TRANSFER IN THE ENTRANCE REGION OF A HELICAL PIPE WITH UNIFORM WALL TEMPERATURE
International Heat Transfer Conference 11, Vol.7, 1998, issue
L.J. Li, Cheng-Xian Lin, M. A. Ebadian
SWIRL-ENHANCED LAMINAR FORCED CONVECTION THROUGH AXIALLY TWISTED RECTANGULAR DUCTS-PART 1, FLUID FLOW
Journal of Enhanced Heat Transfer, Vol.19, 2012, issue 5
Raj M. Manglik, P. Patel, Milind A. Jog