Study of air distribution in tray dryer using computational fluid dynamics

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Published: Jul 28, 2021
Keywords:
Tray dryer Computational fluid dynamics Grid independence study Validation

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Manop Rakyat
Sustainable Technology Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand
Pracha Yeunyongkul
Applied Thermal-Fluid Research Group, Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand
Korawat Wuttikid
Applied Thermal-Fluid Research Group, Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand
Surapin Promdan
Applied Thermal-Fluid Research Group, Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand
Nawee Nuntapap
Applied Thermal-Fluid Research Group, Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand
Chatchawan Chaichana
Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
Arpiruk Hokpunna
Department of Mechanical Engineering, Faculty of Engineering, Chiang Mai University, Chiang Mai 50200, Thailand
Thatchapol Chungcharoen
Department of Engineering, King of Mongkut’s Institute of Technology Ladkrabang, Prince of Chumphon Campus, Chumphon 86160, Thailand
Nuttapong Ruttanadech
Department of Engineering, King of Mongkut’s Institute of Technology Ladkrabang, Prince of Chumphon Campus, Chumphon 86160, Thailand
Prathan Srichai
Department of Mechanical Engineering, Faculty of Engineering, Princess of Naradhiwas University, Narathiwat 96000, Thailand
Ronnachart Munsin
Sustainable Technology Research Laboratory, Department of Mechanical Engineering, Faculty of Engineering, Rajamangala University of Technology Lanna, Chiang Mai 50300, Thailand

Abstract

The objective of this work is to investigate the air flow distribution in conventional tray dryer and modified dryer using computational fluid dynamics. Simplified model of drying chamber with assumptions was used for simulation. Grid independence study and model validation were performed with the model of conventional tray dryer. Relative error of models was acceptable for all simulations. The shape of front and rear walls of drying chamber was varied. The results showed that the reason of poor air distribution inside conventional tray dryer was improper installation of air baffle resulting in air flow obstruction. Flow pattern inside the modified drying chamber highly depends on the front wall, while effect of rear wall on flow was insignificant. The critical zones occur at the top of drying chamber for both conventional and modified tray dryers.

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How to Cite
Rakyat, M. ., Yeunyongkul, P. ., Wuttikid, K. ., Promdan, S. ., Nuntapap, N. ., Chaichana, C. ., Hokpunna, A. ., Chungcharoen, T. ., Ruttanadech, N. ., Srichai, P. ., & Munsin, R. . (2021). Study of air distribution in tray dryer using computational fluid dynamics. Engineering and Applied Science Research, 48(6), 684–693. Retrieved from https://ph01.tci-thaijo.org/index.php/easr/article/view/244842
Issue
Vol. 48 No. 6 (2021)
Section
ORIGINAL RESEARCH

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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