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This comprehensive summary of the state of the art and the ideas behind the reaction engineering approach (REA) to drying processes is an ideal resource for researchers, academics and industry practitioners. Starting with the formulation, modelling and applications of the lumped-REA, it goes on to detail the use of the REA to describe local evaporation and condensation, and its coupling with equations of conservation of heat and mass transfer, called the spatial-REA, to model non-equilibrium multiphase drying. Finally, it summarises other established drying models, discussing their features, limitations and comparisons with the REA. Application examples featured throughout help fine-tune the models and implement them for process design and the evaluation of existing drying processes and product quality during drying. Further uses of the principles of REA are demonstrated, including computational fluid dynamics-based modelling, and further expanded to model other simultaneous heat and mass transfer processes.

In the course of almost 40 years various researchers, at what used to be TNO's Forest Products Research Institute, currently the TNO Centre for Timber Research, conducted studies into the physical properties of wood. The first studies and calculations were carried out by Mr E. Prochaska, after which Mrs G.M.C. Koning-Vrolijk continued the work. Indeed Mrs Koning-Vrolijk wrote the Institute's first publication (1962), an Eng­ lish version of which was published in 1963 (3) on the occasion of FAO and IUFRO Conferences held in the United States. Thereafter, the Institute's work was carried on by Mr A. Govers, Mr J.F. Rijsdijk and Mr P.B. Laming. Their research resulted in a second publication (Laming 1978) in which not only the mechanical properties but also the physical properties of 48 wood species were described. During the bulk of this period technical support was provided by Mr J.C. Verwijs and more recently by Mr L. van Brussel. After extensive studies, the Belgian Timber Information Institute also adopted the same research methods as TNO in order to obtain physical data on a number of wood species which were of commercial interest to the Belgian market but which had not been covered in TNO's studies. The Belgian Timber Information Institute's suggestion to include their research results, on a total of 17 wood species in this publication,.was therefore gratefully accepted.

Schnittholz ist nur in einwandfrei getrocknetem Zustand handelsfähig und reklamationsfrei zu verarbeiten. Dies bedeutet, dass den Holztrocknungsanlagen weltweit eine große Bedeutung zukommt. Die erfolgreiche Anwendung erfordert jedoch erhebliche Kenntnisse, deren Fehlen häufig zu großen finanziellen Verlusten und langwierigen Rechtsstreitigkeiten führen. Das Buch soll eine Anleitung zum Trocknen von Schnittholz geben und zu einer sinnvollen Planung bei der Beschaffung von Trocknungsanlagen beitragen. Der Schwerpunkt liegt auf der konventionellen Frischluft-Ablufttrocknung von Massivholz in Form von Schnittholz (Bretter, Bohlen, Kantholz). Daneben werden viele andere Trocknungsverfahren gemäß ihrer Bedeutung behandelt.Der Autor vermittelt seine umfangreichen Erfahrungen aus jahrzehntelanger Lehrtätigkeit und Forschung an der Fachhochschule Rosenheim sowie aus erfolgreicher Berater- und Gutachtertätigkeit in den Betrieben. Der Inhalt des vorliegenden Buches beschränkt sich im Wesentlichen auf die Verfahren, die in der betrieblichen Technik der Holztrocknung praktisch angewendet werden oder deren Einführung zu erwarten ist.

This book collects the best articles from recent issues of'Fine Woodworking'on the subject of finding and working with wood. Wood is the one thing that woodworkers have in common and there is endless fascination with the working properties of various species, how to select and season wood and how to store it. Wood has a way of behaving as if it's still alive, moving with seasonal changes in temperature and humidity. Learning to work with it rather than against wood movement is critical to successful woodworking.Table of ContentsSection 1: Buying and HarvestingSection 2: Selecting WoodSection 3: Drying WoodSection 4: Working with WoodSection 5: Transporting and Storing

Pergamon Series of Monographs on Furniture and Timber, Volume 1: An Introduction to the Seasoning of Timber discusses the applied technology of wood preservation. The book is comprised of 10 chapters that cover both methods and concerns of seasoning timber. The text first provides an introduction to the subject of timber seasoning, and then proceeds to detailing the botanical structure related to drying. Next, the book tackles issues of moisture and dryness of timber. The next two chapters deal with air and kiln seasoning. Chapters 7 and 8 discuss drying defects and drying schedules. The last two chapters cover other methods of seasoning and other aspect of timber drying. The book will be of great use to professionals in the timber industry. Botanists and agriculturists will also benefit from the book.