NISCAIR Online Periodicals Repository

NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR)  >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.13 [2006] >
IJCT Vol.13(5) [September 2006] >


Title: Simultaneous heat and mass transfer studies in drying ammonium chloride in a batch-fluidized bed dryer
Authors: Kumaresan, R
Viruthagiri, T
Keywords: Fluidized bed dryer
Ammonium chloride
Simultaneous heat and mass transfer
Issue Date: Sep-2006
Publisher: CSIR
IPC CodeC09K5/00, B01J8/00
Abstract: Simultaneous heat and mass transfer occurs during drying. Fluidized bed drier, unlike other types of dryers is more sensitive to the variation of moisture content of the material being dried. Ammonium chloride is used for this study. Heat and mass transfer studies were carried out using the experimental set up which consists of a well-insulated glass fluidized column with calming section and a fluidized section of height 435 mm and diameter 55 mm. Experiments were carried out with the variables- (i) size of ammonium chloride particles from 495 to 912 microns, (ii) inlet air velocity from 1.136 to 1.391 m/s, (iii) temperature of inlet air to the fluidized bed dryer from 60 to 75°C, (iv) initial moisture content of ammonium chloride to the fluidized bed dryer from 0.04 to 0.06 kg of water /kg of bone dry ammonium chloride, (v) bed hold of 0.090 to 0.130 kg. Humidity of the inlet air to the fluidized bed is determined by measuring the dry and wet bulb temperatures and using the psychrometric chart. Microsoft Excel spreadsheets are used for the calculations. A correlation between Nusselt number and Reynolds number was developed using the least square method. A simplified unsteady state mass transfer equation was developed to determine the diffusion coefficient.
Page(s): 440-447
ISSN: 0975-0991 (Online); 0971-457X (Print)
Source:IJCT Vol.13(5) [September 2006]

Files in This Item:

File Description SizeFormat
IJCT 13(5) 440-447.pdf136.62 kBAdobe PDFView/Open
 Current Page Visits: 628 
Recommend this item

 

National Knowledge Resources Consortium |  NISCAIR Website |  Contact us |  Feedback

Disclaimer: NISCAIR assumes no responsibility for the statements and opinions advanced by contributors. The editorial staff in its work of examining papers received for publication is helped, in an honorary capacity, by many distinguished engineers and scientists.

CC License Except where otherwise noted, the Articles on this site are licensed under Creative Commons License: CC Attribution-Noncommercial-No Derivative Works 2.5 India

Copyright © 2012 The Council of Scientific and Industrial Research, New Delhi. All rights reserved.

Powered by DSpace Copyright © 2002-2007 MIT and Hewlett-Packard | Compliant to OAI-PMH V 2.0

Home Page Total Visits: 643303 since 06-Feb-2009  Last updated on 26-Dec-2014Webmaster: nopr@niscair.res.in