CORRELATIONS FOR THE EQUILIBRIUM MOISTURE CONTENT OF SOI.IDS
作者:
S. E. Papadakis,
R. E. Bahu,
K. A. McKenzie,
I. C. Kemp,
期刊:
Drying Technology
(Taylor Available online 1993)
卷期:
Volume 11,
issue 3
页码: 543-553
ISSN:0737-3937
年代: 1993
DOI:10.1080/07373939308916843
出版商: Taylor & Francis Group
关键词: adsorption;desorption;experimental data;isotherms;relative humidity;temperature
数据来源: Taylor
摘要:
Water adsorption and desorption isotherms at various temperatures have been generated for a variety of particulate materials (ion exchange resin, silica gel, wheat and cellulose materials). Most of thc data were obraincd with the SPS Equilibrium Moisture Content rig, using a dynamic equilibration method. Equilibration over saturated salt solutions at 2°C (static method) was also used for some of the data. Seven semi-empitical correlations, available in the literature, and one developed by SPS have been used to relate the equilibrium moisture content of the material to the relative humidity and temperature of the air. These equations enable the equilibrium moisture content to be predicted under various conditions of relative humidity and temperature from a small number of tests. For each of the six materials tested at least one of the correlations gave a good fit. However, there was no correlation which predicted the equilibrium moisnrre content well for every one of the six materials.
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