Korean Journal of Air-Conditioning and Refrigeration Engineering (설비공학논문집)

The Society of Air-Conditioning and Refrigerating Engineers of Korea (대한설비공학회)
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Feasibility Study for Applying Desiccant to Low Temperature Vacuum Drying Process

저온진공건조 공정에 제습제 적용을 위한 타당성 연구

  • Sim, Yeonho (Department of Mechanical Engineering, Graduate School of Kookmin University) ;
  • Kang, Jisu (Department of Mechanical Engineering, Graduate School of Kookmin University) ;
  • Byun, Siye (Department of Mechanical Engineering, Graduate School of Kookmin University) ;
  • Chang, Young Soo (College of Engineering, Kookmin University) ;
  • Kang, Byung Ha (College of Engineering, Kookmin University)
  • 심연호 (국민대학교 대학원 기계공학과) ;
  • 강지수 (국민대학교 대학원 기계공학과) ;
  • 변시예 (국민대학교 대학원 기계공학과) ;
  • 장영수 (국민대학교 공과대학) ;
  • 강병하 (국민대학교 공과대학)
  • Received : 2016.04.15
  • Accepted : 2016.04.18
  • Published : 2016.05.10
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Abstract

This study was conducted to improve the performance of low-temperature vacuum dryer by applying desiccant to cold trap. Performance evaluation was carried out using several desiccants. The amounts of absorption and diffusivity were measured based on analytic model. Results of desiccant performance evaluation revealed that silica-gel had the most excellent performance for conditions of low-temperature vacuum drying process. Silica-gel was applied to cold trap for evaluating the drying performance. The experiment results showed that the drying time was extended as the thickness of sample was increased due to increased heat and mass transfer resistance of drying sample. In addition, as heating plate temperature was increased, drying time was decreased due to increased evaporation pressure of drying sample. Furthermore, drying time with desiccant was decreased approximately 20% than that without desiccant.

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References

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