Characteristic functions for the drying of non-hygroscopic porous slab with a constant body temperature.

• Yoshida Masamichi

  Department of Chemical Engineering, Kyoto University

• Imakoma Hironobu

  Department of Chemical Engineering, Kyoto University

• Okazaki Morio

  Department of Chemical Engineering, Kyoto University

抄録

This paper deals with the isothermal drying process for slabs of non-hygroscopic porous material. First, the falling rate period is divided into the regular regime and the penetration period. Then the mass transfer equation involving a moving boundary is analyzed for both periods. In the regular regime, the relation between a modified flux parameter and a modified mean moisture content is characteristic of the dependence of moisture diffusivity on moisture content. On the other hand, in the penetration period, the relation between the flux parameter and the mean moisture content is not affected by the dependence of the diffusivity on the moisture content. These characteristic functions generalize the drying-rate curves, which differ with drying conditions. By using these functions, it may be possible to predict drying rate curves under any drying condition from a measured curve.

収録刊行物

• JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

  JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 23 (1), 58-63, 1990

  公益社団法人 化学工学会

キーワード

• Drying
• Characteristic Function
• Non-hygroscopic Porous Material
• Variable Diffusivity
• Moving Boundary Problem

詳細情報

• CRID: 1390282679543134464
• NII論文ID: 130000021963
• DOI: 10.1252/jcej.23.58
• COI: 1:CAS:528:DyaK3cXhsVWqu74%3D
• ISSN: 18811299
• ISSN: 00219592
• ISSN: http://id.crossref.org/issn/00219592
• Web Site: http://www.jstage.jst.go.jp/article/jcej/23/1/23_1_58/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可