Journal of the Korean Wood Science and Technology

The Korean Society of Wood Science & Technology (한국목재공학회)
권호 표지

Study on Heat Treatment of Red Pine Log

소나무 원목의 열처리에 관한 연구

  • 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)
  • 엄창득 (서울대학교 농업생명과학대학 산림과학부) ;
  • 한연중 (서울대학교 농업생명과학대학 산림과학부) ;
  • 신상철 (국립산림과학원 산림병해충과) ;
  • 정영진 (국립산림과학원 산림병해충과) ;
  • 정찬식 (국립산림과학원 산림병해충과) ;
  • 여환명 (서울대학교 농업생명과학대학 산림과학부)
  • Received : 2007.07.18
  • Accepted : 2007.09.12
  • Published : 2007.11.25
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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.

본 연구에서는 각종 병해충 감염목의 열처리 조건으로 목재 중심부 온도를 $56^{\circ}C$에서 30분 이상 처리해야 한다는 FAO 열처리 기준(International standards for phytosanitary measures (ISPM) No. 15)을 적용하여 소나무 재선충 감염의 확산을 막고 감염목을 용재로서 사용할 수 있게 하기 위하여 국산 소나무의 열처리특성을 분석하였다. 온도와 습도 및 함수율별 열처리속도 측정을 통하여 목표온도 도달시간을 분석하고 소비에너지를 평가하여, 열처리 공정 적용 기술개발의 기초 자료를 확보하고자 하였다. 열처리 시 함수율이 높을수록, 직경이 클수록 열처리 소요시간과 소요에너지가 증가하였고, 고온 고습 조건이 열처리 소요시간을 단축시켰다. 열처리기 현장투입 시 적절한 열처리공정 제어를 위해서는 열악한 주위환경 조건, 처리기 가동성능의 변화, 고습적용이 불가능한 상황 등을 고려한 다양한 온도 습도 조건에서의 가열과 냉각 시 소비되는 에너지 평가와 소요시간 예측이 필요하다.

Keywords

References

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