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Since the current trend is towards the use of kiln dried wood compared to green lumber because of the aforementioned reasons, the significance of kiln drying is increasing. This is occurring even in markets that traditionally used green lumber, such as the Japanese post and beam housing market (Cohen & Gaston, 2003). ' This chapter continues with the rationale for the present research and its objectives. An explanation of why it is important to achieve high product quality in drying follows. Main areas in kiln drying where problems and difficulties may appear that have a negative impact on quality are mentioned subsequently. These include the drying process in general, ways to control and measure kiln conditions, dried product quality problems (i.e., drying defects) and the drying related knowledge of various stakeholders. Additionally, the different kiln drying issues faced by companies that dry softwoods and hardwoods are presented, since there are substantial differences between those types of operations. Finally, the general kiln drying situations in both Canada and Europe are discussed. 2.2. PROBLEM STATEMENT AND OBJECTIVES The forest products industry is vital to the Canadian economy. Exports of forest products reached $42.9 billion in 2002 (NRCAN, 2003). Furthermore, over a million jobs were dependent on the forest products industry in 1999 (COFI, 2000). Kiln drying constitutes a critical part of wood processing. However, up to present, there has been no detailed information on the kiln drying problem situation across Canada. This results in companies being unaware of the state of their sector. Moreover, research institutes lack information regarding the importance of the various problems and issues for the industry. Therefore, it was considered important for The University of British Columbia to obtain this knowledge so that its wood drying program can put more emphasis on the most pressing and significant industrial issues. It is hoped that this information will be used to increase the competitiveness of the Canadian wood products industry. 4PDF Image | KILN DRYING PROBLEMS AND ISSUES IN CANADA
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