Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2004
Volume 7
Issue 2
Topic:
Wood Technology
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Widłak H. , Majka J. 2004. INVESTIGATION OF RELATION BETWEEN MOISTURE CONTENT DECREASE AND WATER MASS FLOW REMOVED FROM A KILN, EJPAU 7(2), #03.
Available Online: http://www.ejpau.media.pl/volume7/issue2/wood/abs-03.html

INVESTIGATION OF RELATION BETWEEN MOISTURE CONTENT DECREASE AND WATER MASS FLOW REMOVED FROM A KILN

Henryk Widłak, Jerzy Majka

 

ABSTRACT



Currently, the basic way of wood moisture content decrease control during drying process is measurement of that moisture content with resistance meters on a random selection of timber items. The results of that measurements are particularly unreliable, especially at wood moisture content below fibre saturation point and, on the other hand, they are influenced by accuracy of sample’s choice. Research considered the problem of monitoring of water mass flow that is removed with air in order to control the course of drying process. As a results of experiments, during drying of pinewood timber, it was stated that the monitoring of outlet air state allows for the verification of measurements of moisture content with resistance meters. The monitoring of air state at inlet and outlet of a kiln creates the possibilities of a more complex control of wood drying process.

Key words: drying, wood moisture content decrease, water mass flow, outlet air volume flow.