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Study on Heat Treatment of Red Pine Log  

Eom, Chang-Deuk (Dept. of Forest Science, College of Agriculture and Life Science, Seoul National University)
Han, Yeonjung (Dept. of Forest Science, College of Agriculture and Life Science, Seoul National University)
Shin, Sang Chul (Dept. of Forest Insect Pests & Diseases, Korea Forest Research Institute)
Chung, Yeong Jin (Dept. of Forest Insect Pests & Diseases, Korea Forest Research Institute)
Jung, Chan Sik (Dept. of Forest Insect Pests & Diseases, Korea Forest Research Institute)
Yeo, Hwanmyeong (Dept. of Forest Science, College of Agriculture and Life Science, Seoul National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.35, no.6, 2007 , pp. 50-56 More about this Journal
Abstract
FAO standard for heat sterilization of wood, International standards for phytosanitary measures (ISPM) No.15, must meet heat-treated wood core temperature to be higher than $56^{\circ}C$ and keep the temperature for more than 30 minutes. This study was carried out to analyze the heat treatment characteristics of domestic pinewood sterilized with the FAO standard. To enhance the effectiveness of heat treatment process in mountainous district energy consumption and time required to reach target temperature were evaluated at various temperature and relative humidity conditions and moisture contents of wood. Heat-treatment of high temperature and high humidity reduced the required heating time. Lower humidity levels at same temperature reduced energy consumption per unit time. However, lower humidity levels could not reduce total energy consumption greatly because longer treatment time was required at that condition. It is necessary to estimate energy consumption and predict treatment time in dynamic heating and cooling situations, because it frequently happens not to meet optimum treatment condition due to poor surrounding climates and operation performance of heat treatment facility in real field.
Keywords
heat sterilization; energy consumption; phytosanitary; pinewood; humidity; core temperature;
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