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Numerical Simulation Techniques for Optimizing Thermodynamic Efficiencies of Cereal Grain Dryers

2013; Taylor & Francis; Volume: 31; Issue: 6 Linguagem: Inglês

10.1080/07373937.2012.753903

1532-2300

Rafael Pinheiro Amantéa, Mauri Fortes, José Helvecio Martins, Wanyr Romero Ferreira,

Heat Transfer Mechanisms

As a first objective, this study addresses a novel approach to drying efficiency analysis through transient models based on both the first and second laws of thermodynamics. As a second objective, we developed a numerical meshless scheme based on cubic radial basis functions to solve the associated nonlinear coupled advection-dominated set of partial differential equations. The simulated results showed excellent accuracy when compared with available literature data on drying. Finally, and most significantly, this study presents an original methodology for optimizing dryers based on energy and exergy efficiencies and the associated controllable operational parameters: drying air velocity (flowrate) and temperature.