Measurement of drying rate from temperature data during drying of slab materials

被引：9

作者：

Nishimura, Nobuya

Takigawa, Teiji

Iyota, Hiroyuki

Imakoma, Hironobu

机构：

[1] Osaka City Univ, Grad Sch Engn, Dept Mech & Phys Engn, Sumiyoshi Ku, Osaka, Osaka 5588585, Japan

[2] Kobe Univ, Dept Sci & Chem Engn, Nada Ku, Kobe, Hyogo 6578501, Japan

来源：

KAGAKU KOGAKU RONBUNSHU | 2007年 / 33卷 / 02期

关键词：

convective drying; coated web; non-hygroscopic porous slab; drying rate; radiation thermometer;

D O I：

10.1252/kakoronbunshu.33.101

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A simple method was proposed for estimating drying rate from the material temperature change in a drying process. This method was applied to convective and combined convective-conductive dryings of a thin glass-particle layer, i.e., non-hygroscopic porous slab, and to convective drying of a PVA solution film. The method was proved to be useful except for two cases; the period when the temperature rise of the drying material is not accompanied by moisture evaporation; and the period when the quantity of moisture evaporating is small with the change in material temperature is extremely small. The proposed method can be applied to estimate drying rate of a coated web in a rapid drying using hot air, where the conventional method of estimating drying rate from mass change data is difficult to apply.

引用

页码：101 / 106

页数：6