A test of different methods to evaluate the diffusivity from unsteady-state sorption measurements
Författare
Summary, in English
Different simple methods for evaluating the diffusivity from a sorption measurement are presented and tested when there is a surface resistance (a limited mass transfer coefficient), a non-perfect step in relative humidity or non-Fickian effects. It is concluded that the different methods have different qualities and it is impossible to give a general recommendation on which method to use. The best tactic is probably to use more than one of the methods. A knowledge of the experimental conditions will help in choosing the best method.
Avdelning/ar
Publiceringsår
1994
Språk
Engelska
Sidor
1863-1876
Publikation/Tidskrift/Serie
Drying Technology
Volym
12
Issue
8
Dokumenttyp
Artikel i tidskrift
Förlag
TAPPI
Ämne
- Materials Engineering
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1532-2300