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thoroughly evaluating the kiln drying related knowledge of all relevant stakeholders (i.e., kiln operators, equipment suppliers, distributors, sales personnel and customers of dried wood products). There was a relatively high number of missing values (19.6%) in the question regarding who provides help with drying problems. The most likely explanation for this could be that this was an open-ended question and, in some cases, subjects may have experienced difficulties understanding what they were asked for. For example, in some cases responses would include names of specific individuals that provided assistance when only the profession of these individuals was required for the survey. Most frequently, companies (29.1%) preferred to consult their kiln manufacturers rather than research institutes (22.7%) when faced with drying problems. A large number of companies (21.6%) also attempted to solve problems internally. A detailed interpretation of these results is given in section 5.2.6. 5.1.4. Intention to Upgrade Kilns Approximately one third of the companies (35.7%) investigated intended on upgrading their kilns in the near future, although all of the cases investigated reported important problems in drying processes and kiln control. McConnell (1990) points out that upgrading older kilns can provide advantages in terms of controlling the drying process. In particular, airflow and heating distribution can become more uniform, installation of new controlling equipment can offer more accurate measurements of kiln conditions and fire hazards can be minimized. The survey results show that issues like air flow and ability to monitor moisture content were considered important. This should probably force many companies to upgrade their kilns. However, the decision to upgrade kilns also depends on a variety of other factors that were not investigated and which could have influenced the responses. For example, two subjects reported that available capital was a limiting factor in upgrading their kilns. The model that resulted from applying the logistic regression method correctly classified 77.1% of the cases. In addition, the final number of variables was reduced from 30 to seven. Thus, the model is not 87PDF Image | KILN DRYING PROBLEMS AND ISSUES IN CANADA
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