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Title: Effect of infrared irradiation on drying characteristics of wet porous materials

Abstract

The authors studied infrared drying characteristics of wet porous materials by comparison with the convective drying characteristics, and attention was focused on the factors influencing their characteristics. By selecting three kinds of membrane filters, the authors examined the influences of the mean pore diameter and the spectral distribution of irradiation power as variables using a far-infrared heater and a near-infrared heater. The differences between the infrared and convective drying characteristics (drying rate, sample temperature, water content distribution) were experimentally obtained, and the influence of mean pore diameter of the sample on its drying characteristics was observed only in infrared drying bit in convective drying. By measuring the diffuse transmittance of the membrane filter in consideration of the drying process, the authors concluded that infrared radiation penetrating into the drying sample was absorbed directly by the water in the voids, and that the water vaporized there.

Authors:
;
Publication Date:
Research Org.:
Mie Univ. (JP)
OSTI Identifier:
20006239
Alternate Identifier(s):
OSTI ID: 20006239
Resource Type:
Journal Article
Journal Name:
Drying Technology
Additional Journal Information:
Journal Volume: 17; Journal Issue: 7-8; Conference: 11th International Drying Symposium (IDS'98), Halkidiki (GR), 08/19/1998--08/22/1998; Other Information: PBD: Aug-Sep 1999; Journal ID: ISSN 0737-3937
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; POROUS MATERIALS; DRYING; FAR INFRARED RADIATION; NEAR INFRARED RADIATION; DRYERS; COMPARATIVE EVALUATIONS; PARAMETRIC ANALYSIS

Citation Formats

Hashimoto, A., and Kameoka, T. Effect of infrared irradiation on drying characteristics of wet porous materials. United States: N. p., 1999. Web. doi:10.1080/07373939908917640.
Hashimoto, A., & Kameoka, T. Effect of infrared irradiation on drying characteristics of wet porous materials. United States. doi:10.1080/07373939908917640.
Hashimoto, A., and Kameoka, T. Wed . "Effect of infrared irradiation on drying characteristics of wet porous materials". United States. doi:10.1080/07373939908917640.
@article{osti_20006239,
title = {Effect of infrared irradiation on drying characteristics of wet porous materials},
author = {Hashimoto, A. and Kameoka, T.},
abstractNote = {The authors studied infrared drying characteristics of wet porous materials by comparison with the convective drying characteristics, and attention was focused on the factors influencing their characteristics. By selecting three kinds of membrane filters, the authors examined the influences of the mean pore diameter and the spectral distribution of irradiation power as variables using a far-infrared heater and a near-infrared heater. The differences between the infrared and convective drying characteristics (drying rate, sample temperature, water content distribution) were experimentally obtained, and the influence of mean pore diameter of the sample on its drying characteristics was observed only in infrared drying bit in convective drying. By measuring the diffuse transmittance of the membrane filter in consideration of the drying process, the authors concluded that infrared radiation penetrating into the drying sample was absorbed directly by the water in the voids, and that the water vaporized there.},
doi = {10.1080/07373939908917640},
journal = {Drying Technology},
issn = {0737-3937},
number = 7-8,
volume = 17,
place = {United States},
year = {1999},
month = {9}
}