Prediction of fluidization behaviour and a quasi-stationary approach to drying kinetics of irregular particulate food materials
Senadeera, Wijitha (2009) Prediction of fluidization behaviour and a quasi-stationary approach to drying kinetics of irregular particulate food materials. In 7th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics, 28th June- 3rd July 2009, Krakow, Poland. (In Press)
Changes in fluidization behaviour behaviour was characterised for parallelepiped particles with three aspect ratios, 1:1, 2:1 and 3:1 and spherical particles. All drying experiments were conducted at 500C and 15 % RH using a heat pump dehumidifier system. Fluidization experiments were undertaken for the bed heights of 100, 80, 60 and 40 mm and at 10 moisture content levels. Due to irregularities in shape minimum fluidisation velocity of parallelepiped particulates (potato) could not fitted to any empirical model. Also a generalized equation was used to predict minimum fluidization velocity. The modified quasi-stationary method (MQSM) has been proposed to describe drying kinetics of parallelepiped particulates at 30o C, 40o C and 50o C that dry mostly in the falling rate period in a batch type fluid bed dryer.
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|Item Type:||Conference Paper|
|Keywords:||Fluidization, Quasi-stationary approach, Generalised model, irregular particulate|
|Subjects:||Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > INTERDISCIPLINARY ENGINEERING (091500) > Fluidisation and Fluid Mechanics (091504)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Built Environment and Engineering|
Past > Schools > School of Engineering Systems
|Deposited On:||16 Jul 2009 09:15|
|Last Modified:||29 Feb 2012 23:59|
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