Empirical Equations for Estimating Drying Times of Thick Rotary-Cut Veneer in Press and Jet Dryers.

Abstract

This paper describes the use of empirical equations for the analytical correlation of the drying variables-time, temperature, green thickness, and moisture content-for drying southern pine and Douglas-fir thick-cut veneers in two dryer types. The author describes a method of fitting veneer drying data to an empirical equation of a form applicable to both jet and press drying for veneers 1/8 to 1/2 inch thick across a wide range of temperatures. With drying rate data represented by an empirical equation, it is possible to interpolate drying times with some certainty and to extrapolate beyond experimental observations for a limited range. If the basic form of the equations developed in this paper are found to be applicable to other species, the amount of experimentation necessary to characterize a given dryer/species system would be reduced, making cost analysis more efficient. Additional keywords: Tables(data), Charts, and Experimental data.

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1985
Accession Number
ADA154427

Entities

People

  • J. L. Tschernitz

Organizations

  • Forest Products Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Temperature
  • Barometric Pressure
  • Boiling Point
  • Coefficients
  • Equations
  • Experimental Data
  • Forests
  • Heat Balance
  • Heat Energy
  • Heat Transfer
  • Materials
  • Mathematical Analysis
  • Measurement
  • Moisture Content
  • Physical Properties
  • Surface Temperature
  • Thermal Conductivity

Readers

  • Computational Modeling and Simulation
  • Forest Ecology