Volume 7 (2012)
Volume 5 (2010)
Volume 4 (2009)
Volume 1 (2006)
Most Downloaded Articles
- Prediction and Validation of Carbon Dioxide Gas Solubility in Ionic Liquids at T=298K and Atmospheric Pressure using Quantum Chemical Approach by Ramalingam, Anantharaj and Banerjee, Tamal
- Mathematical Model of a Falling Film Reactor for Methyl Ester Sulfonation by Torres Ortega, Jesús Alfonso/ Morales Medina, Giovanni/ Suárez Palacios, Oscar Yesid and Sánchez Castellanos, Francisco José
- Optimization of a Continuous Process for the Recovery of Lactic Acid Using Differential Evolution Algorithm by Rahman, Imran/ Ahmad, Arsalan/ Kumar, Prakash and Kulkarni, Bhaskar D.
- Optimal Solution of MINLP Problems Using Modified Genetic Algorithm by Danish, Mohd./ Kumar, Surendra/ Qamareen, Arees and Kumar, Shashi
Minimum Fluidization Velocity of Food Materials: Effect of Moisture and Shape
1Queensland University of Technology
Citation Information: Chemical Product and Process Modeling. Volume 4, Issue 4, ISSN (Online) 1934-2659, DOI: 10.2202/1934-2659.1283, June 2009
- Published Online:
Changes in fluidization behaviour of three geometrical shaped food particulates, with changes in moisture content during drying, were investigated using a fluidized bed dryer. The three food particulates were cylindrical (beans), parallelepiped (potato) and spherical (green peas). Fluidization behavior was characterised for cylindrical shape particles with three length diameter-ratios of 1:1, 2:1 and 3:1, parallelepiped particles with three aspect ratios of 1:1, 2:1 and 3:1 and spherical particles. All drying experiments were conducted at 50oC and 15% RH using a heat pump dehumidifier system. Fluidization experiments were undertaken for the bed heights of 100, 80, 60 and 40mm and at 10 moisture content levels.Data was analysed using SAS, and an empirical relationship of the form Umf = A + B e-Cm was developed for the change of minimum fluidization velocity with moisture content during drying for cylindrical particulates for the L:D ratio of 1:1, and spherical behaviour was best fitted to the linear model of Umf = A + Bm. Due to irregularities in shape, the minimum fluidisation velocity of parallelepiped particulates (potato) could not be fitted to any empirical model. The experimentally determined minimum fluidisation velocities were compared with predicted minimum fluidisation velocities using a generalised equation.