Resources Recycling (자원리싸이클링)

The Korean Institute of Resources Recycling (한국자원리싸이클링학회)
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A Study on the Conditions of Drying Efficiency for Conveyor-Belt-Type Dryers Employing Continuous Decompression Indirect Heating Method

연속 감압-간접열 방식의 벨트형 건조장치를 이용한 건조효율 연구

  • Ha, Sang-An (Silla University, Department of Environmental Engineering) ;
  • Kim, Dong-Kyun (Silla University, Department of Environmental Engineering) ;
  • Wang, Jei-Pil (Pukyong National University, Department of Metallurgical Engineering)
  • Received : 2015.10.26
  • Accepted : 2015.12.04
  • Published : 2015.12.30
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Abstract

The objective of this study is to develop a belt-type dryer with a capacity of 1 ton/day, thereby improving drying efficiency by more than 70% and reducing the size of dryers by more than 50%, and thus making dryers smaller and lighter to reduce the installation and operation costs by more than 20%. We identified structural improvements by analyzing existing dryers employing indirect heating and verified the superior drying performance of the proposed method through some basic experiments. Furthermore, we verified the improvements in the heat transfer and drying characteristics as we conducted the experiments at reduced pressure.

본 연구의 목표는 1 ton/day용량의 연속 감압식 간접열 방식의 벨트형 건조장치를 개발하여 건조효율을 70% 이상 향상시키며 기존 건조기 장치에 비하여 약 50% 이상의 건조기 크기를 축소시켜 장치의 소형, 경량화를 이루고 그로 인한 설치비 및 운전비 절감효과를 20%이상 향상시키는 것이다. 현재는 기존의 간접열 건조장치를 분석하여 구조적인 개선점을 도출하였으며 기초실험을 통하여 우수한 건조성능을 확인하였다. 또한 감압조건에서의 실험을 수행하여 열전달 및 건조특성이 향상되는 것을 확인하였다.

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References

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