A SIMPLIFIED MODEL FOR DETERMINATION OF MOISTURE DIFFUSIVITY OF DATE FROM EXPERIMENTAL DRYING CURVES

Drying characteristics of crispy winter jujube dried by explosion puffing drying at different vacuum drying temperature were investigated. Selection of the best model was examined by comparing the determination of coefficient (R2), root means square error (RMSE), and mean relative percentage error (P) between the experimental and predicted values. As expected, higher drying rates were obtained with higher vacuum drying temperature. The results showed that the Modified Henderson and Pabis model provided better simulation of drying curves for crispy winter jujube according to thin-layer drying theory. The effective moisture diffusivity of crispy winter jujube dried by explosion puffing drying with higher vacuum drying temperature was higher than the others.

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Dynamic Analysis of a Turbocharger Centrifugal Compressor Impeller

17th Design Automation Conference: Volume 2 — Computer-Aided Design, Mechanical Systems Simulation, and Analysis, Mechanisms, and Robotics ◽

10.1115/detc1991-0154 ◽

1991 ◽

Author(s):

V. Ramamurti ◽

D. A. Subramani ◽

K. Sridhara

Keyword(s):

Finite Element ◽

Finite Element Model ◽

Centrifugal Compressor ◽

Element Model ◽

Simplified Model ◽

Cyclic Symmetry ◽

Compressor Impeller ◽

Cyclic Symmetric ◽

The Finite Element Model

Abstract Stress analysis and determination of eigen pairs of a typical turbocharger compressor impeller have been carried out using the concept of cyclic symmetry. A simplified model treating the blade and the hub as isolated elements has also been attempted. The limitations of the simplified model have been brought out. The results of the finite element model using the cyclic symmetric approach have been discussed.

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Determination of Concentration- Dependent Effective Moisture Diffusivity of Plums Based on Shrinkage Kinetics

Food Preservation Technology - Transport Phenomena in Food Processing ◽

10.1201/9781420006261.ch10 ◽

2002 ◽

Cited By ~ 1

Author(s):

A Gabas ◽

F Menegalli ◽

J Telis-Romero

Keyword(s):

Moisture Diffusivity ◽

Effective Moisture Diffusivity ◽

Effective Moisture

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Determination of Concentration-Dependent Effective Moisture Diffusivity of Plums Based on Shrinkage Kinetics

Transport Phenomena in Food Processing ◽

10.1201/9781420006261-14 ◽

2016 ◽

pp. 175-190

Keyword(s):

Moisture Diffusivity ◽

Effective Moisture Diffusivity ◽

Effective Moisture

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Drying of green bean and okra under solar energy

Chemical Industry and Chemical Engineering Quarterly ◽

10.2298/ciceq101217004d ◽

2011 ◽

Vol 17 (2) ◽

pp. 199-205 ◽

Cited By ~ 21

Author(s):

İbrahim Doymaz

Keyword(s):

Green Bean ◽

Chi Square ◽

Sun Drying ◽

Constant Rate ◽

Thin Layer Drying ◽

Rate Period ◽

Drying Models ◽

Drying Curves ◽

The Times

In this study, sun drying behaviours of green bean and okra were investigated. Drying experiments were conducted in Iskenderun-Hatay, Turkey. The drying study showed that the times taken for drying of green bean and okra from the initial moisture contents of 89.5% and 88.7% (w.b.) to final moisture content of around 15?0.5% (w.b.) were 60 and 100 h in open sun drying, respectively. The constant rate period is absent in drying curves. The drying process took place in the falling rate period. The drying data were fitted to thirteen thin-layer drying models. The performance of these models was investigated by comparing the determination of coefficient (R2), reduced chi-square (c2) and root mean square error (RMSE) between the observed and predicted moisture ratios. Estimations by Approximation of diffusion (for green bean) and Midilli et al. models (for okra) were in good agreement with the experimental data obtained.

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