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Untersuchungen Über Die Erwärmung Und Trocknung Des Holzes Mit Infrarotstrahlern

Untersuchungen Über Die Erwärmung Und Trocknung Des Holzes Mit Infrarotstrahlern

          
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About the Book

Die Verwendung der Infrarotstrahlung für Erwärmungs- und Trocknungsauf- gaben hat in den letzten 20 Jahren auf verschiedenen Gebieten der Technik eine sehr starke Zunahme erfahren. Wenig betroffen von dieser Entwicklung wurde die holzverarbeitende Industrie, in welche die Infrarotstrahlung bisher nur in sehr beschränktem Maße Eingang gefunden hat. Die Ursachen dafür liegen einmal in den besonderen Stoffeigenschaften des Holzes, welche die Vorteile der Strahlungs- erwärmung nicht in gleichem Maße wie bei anderen Werkstoffen hervortreten lassen, zum anderen aber auch darin, daß bisher nur sehr wenige grundlegende Untersuchungen über das Verhalten des Holzes und der Holzwerkstoffe gegen- über Infrarotstrahlung vorliegen. Als Beitrag zur Aufklärung der physikalischen Vorgänge bei der Bestrahlung des Holzes mit Infrarotstrahlern wurden systemati- sche Untersuchungen über die Erwärmungsverhältnisse von trockenen und feuch- ten Buchen- und Fichtenbrettproben bei verschieden starker Bestrahlung mit Infrarotstrahlern sowie über das Trocknungsverhalten von Brettproben bei Strahlungserwärmung durchgeführt. Zunächst werden in einem Überblick über die theoretischen Grundlagen der Strah- lungserwärmung von Festkörpern die sich daraus ergebenden Möglichkeiten für die Voraus berechnung der Erwärmung bestrahlter Stoffe, insbesondere von Holz, beschrieben und die mathematischen Ansätze dafür angegeben. Für die Bestimmung der Oberflächentemperatur und der Temperaturverteilung im Inneren einseitig bestrahlter Brettproben wurde eine neuartige Meßanordnung mit Thermoelementen entwickelt, mit welcher der Temperaurverlauf in genau angebbaren Abständen von der bestrahlten Oberfläche aufgenommen werden konnte. Mit Hilfe einer selbsttätig registrierenden Wiegevorrichtung konnte weiterhin der Gewichtsverlust und damit zugleich der Trocknungsverlauf feuch- ter Proben während der Dauer der Bestrahlung aufgezeichnet werden.


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Product Details
  • ISBN-13: 9783663065470
  • Publisher: Vs Verlag Fur Sozialwissenschaften
  • Publisher Imprint: Vs Verlag Fur Sozialwissenschaften
  • Edition: 1996 ed.
  • Language: German
  • Returnable: N
  • Spine Width: 4 mm
  • Width: 170 mm
  • ISBN-10: 3663065472
  • Publisher Date: 01 Jan 1966
  • Binding: Paperback
  • Height: 244 mm
  • No of Pages: 76
  • Series Title: Forschungsberichte Des Landes Nordrhein-Westfalen
  • Weight: 145 gr


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