Paper Title :Enhancement of Fluid Flow and Heat Transfer in Tunnel Kilns
Author :Hosny Z. Abou-Ziyan, Mosab A. Alrahmani, Issa F. Almesri, Jaber H. Almutairi
Article Citation :Hosny Z. Abou-Ziyan ,Mosab A. Alrahmani ,Issa F. Almesri ,Jaber H. Almutairi ,
(2018 ) " Enhancement of Fluid Flow and Heat Transfer in Tunnel Kilns " ,
International Journal of Mechanical and Production Engineering (IJMPE) ,
pp. 63-69,
Volume-6,Issue-6
Abstract : The improper size of channels cause non-uniform flow in tunnel kilns and unequal convective heat transfer
coefficients of longitudinal and transverse bricks in the lattice setting arrangement. This paper reports an approach used to
optimize the dimensions of the kiln channels using a 3D-CFD model with a grid size of 4.78M cells and incorporated k-
turbulence model. The CFD model was validated against experimental data for pressure drop and temperature in tunnel
kilns. The effects of kiln channels on flow uniformity were thoroughly investigated and uniform flow and equal convective
heat transfer coefficients of longitudinal and transverse bricks were achieved by optimizing the dimensions of wall, column,
ceiling, and external channels. The optimum dimensions of the kiln channels are related to the column width of the lattice
brick setting as follows: width of column channel is 0.5; width of wall channel is 0.25; ceiling channel height is 0.2; and
extension channel spacing is 0.36. The pressure drop in the optimum case was larger than that in the case of non-uiform
flow, however, the advantages of quality improvement and quantity enhancement of the produced bricks would surpass the
increase in pumping power considerably.
Index Terms - Tunnel kilns, fluid flow, flow uniformity, heat transfer
Type : Research paper
Published : Volume-6,Issue-6
DOIONLINE NO - IJMPE-IRAJ-DOIONLINE-12607
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Published on 2018-08-13 |
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