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Drying Process Issues Air flow Maintenance and repairs Use of optimized schedules Energy consumption (thermal) Corrosion Selection of kiln layout Energy consumption (electrical) Spraying system Mean Value Lower Bound Upper Bound Kiln Control Issues Quality control during drying Quality control after drying Quality control before drying Ability to monitor moisture content Operation of control unit (simplicity of operation) Maintenance of monitoring equipment Type of kiln control unit Mean Value 4.3 4.2 4.1 4.1 4.0 3.9 3.7 Lower Bound Upper Bound Table 9. Mean values of drying process issues. 4.1.6. Kiln Control Issues Respondents were asked to rate the importance of kiln control issues in their operations. The scale used was the same as in section 4.1.5. for drying process issues (a 1 to 5 interval scale, where 1 signified an unimportant issue, 3 a moderately important issue, and 5 a very important issue). Table 10 presents mean values of kiln control issues. While quality control during drying was the most important kiln control issue, all variables were considered important. Table 10. Mean values of kiln control issues. 4.1.7. Kiln Drying Related Knowledge of Groups Respondents indicated their perceptions of the knowledge levels on individuals. A 1 to 4 interval scale was used, where 1 signified a group that was not at all knowledgeable, 2 signified a group that was not very knowledgeable, 3 signified a group that was knowledgeable, and 4 signified a group that was very knowledgeable. This scale was chosen, instead of the usual 1 to 5, because 95% Confidence Interval 4.2 4.0 4.3 4.0 3.8 4.1 3.9 3.7 4.0 3.6 3.4 3.8 3.2 3.0 3.4 3.2 3.0 3.4 3.1 2.9 3.3 2.7 2.5 3.0 95% Confidence Interval 4.1 4.4 4.0 4.3 4.0 4.3 3.9 4.2 3.8 4.1 3.8 4.1 3.5 3.9 kiln drying for different groups of 52PDF Image | KILN DRYING PROBLEMS AND ISSUES IN CANADA
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