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European Journal of Wood and Wood Products

, Volume 69, Issue 2, pp 287–293 | Cite as

Method for determining liquid water flow in wood during drying using a fluorescent dye tracer

  • Veikko MöttönenEmail author
  • Timo Kärki
  • Ossi Martikka
Originals Originalarbeiten

Abstract

A novel procedure for the evaluation of liquid water flow during the drying of wood is described. The method is based on the movement of a fluorescent dye solution in liquid water. The addition of the dye solution produced a clear trace inside the wood, the length and direction of which were directly related to the flow of liquid water. A comparison of the results obtained with image analysis using UV illumination and measurement of the reflectance spectrum of wood showed that image analysis is appropriate and accurate enough for the determination of the trace of the dye solution. The trace of the dye solution can be determined from the images of the cross sectional samples of wood in all three main directions.

Keywords

Timber Injection Point Fiber Saturation Point Wood Extractive Pyranine 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Eine Methode zur Bestimmung des Fliessverhaltens von flüssigem Wasser im Holz während des Trocknens unter Anwendung eines fluoreszierenden Farbstofftracers

Zusammenfassung

Ein neues Verfahren zur Bestimmung des Fliessverhaltens von flüssigem Wasser während der Holztrocknung wird beschrieben. Das Verfahren beruht auf der Bewegung von fluoreszierender Farbstofflösung im Wasser. Die Zugabe der Farbstofflösung erzeugte im Holz eine gut sichtbare Spur, dessen Länge und Richtung direkt von der Bewegung des Wassers abhing. Ein Vergleich der Ergebnisse von Bildanalyse und der Messung des Reflektionsspektrums des Holzes zeigte, dass die Bildanalyse zur Erfassung der Spur der Farbstofflösung ausreichend genau ist. Anhand von Bildern von Querschnittsholzproben ist es möglich, die Farbstoffspur in allen drei Hauptrichtungen zu messen.

Notes

Acknowledgement

This study was funded by the Academy of Finland (Project 114329), which is gratefully acknowledged.

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Copyright information

© Springer-Verlag 2010

Authors and Affiliations

  1. 1.Lappeenranta University of TechnologyLappeenrantaFinland

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