Some Studies of the Transport Coefficients of Pulp and Paper

Research output: ThesisDoctoral Thesis (compilation)

Abstract

The drying of a porous material occurs in two different periods: the constant rate period and the falling rate period. During the constant rate period, the drying rate is determined by the external conditions regarding heat and mass transfer, and the drying rate is not influenced by the properties of the drying material. During the falling rate period, the material properties, such as the transport rates within the structure and the sorption isotherm, influence the drying rate. This thesis deals with the transport of mass and heat occurring within sheets of pulp and paper.

Details

Authors
  • Lars Nilsson
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Chemical Engineering

Keywords

  • Pore nonuniformities, Permeability, Moisture gradients, Magnetic resonance imaging, Effective diffusivity, Drying, Cellulose fibres, Computational fluid dynamics, Wood, pulp and paper technology, Pappers- och massateknik
Original languageEnglish
QualificationDoctor
Awarding Institution
Supervisors/Assistant supervisor
  • [unknown], [unknown], Supervisor, External person
Award date1996 May 10
Publisher
  • Lill Dahlström, Department of Chemical Engineering I, Lund University, Lund, Sweden,
StatePublished - 1996
Externally publishedYes

Bibliographic note

Defence details Date: 1996-05-10 Time: 10:15 Place: Sal K:A, Kemicentrum, Lund External reviewer(s) Name: Coumans, Jan Title: Dr.Ir. Affiliation: Eindhoven University of Technology, Eindhoven, Nederländerna ---