대한설비공학회:학술대회논문집 (Proceedings of the SAREK Conference)

대한설비공학회 (The Society of Air-Conditioning and Refrigerating Engineers of Korea)
권호 표지

슬러지 박막의 건조과정에 대한 건조 특성 해석

Analysis on the Drying Characteristics for the Drying Process of a Thin Film Layer of Sludge

  • 이공훈 (한국기계연구원 에너지기계연구본부) ;
  • 김욱중 (한국기계연구원 에너지기계연구본부)
  • Lee, Kong-Hoon (Energy Systems Research Division, Korea Institute of Machinery and Materials) ;
  • Kim, Ook-Joong (Energy Systems Research Division, Korea Institute of Machinery and Materials)
  • 발행 : 2008.06.25
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Drying process in the thin film layer of sludge with the thickness less than a few millimeters has been investigated using the simple one-dimensional model. Thin film drying is usually used to dry the viscous materials like sewage sludge. The thin film layer of sludge is dried on the metallic surface through which thermal energy is supplied to the layer during drying. In order to solve the equations, the mass transfer rate on the drying surface should be determined. The mass flux of evaporated water vapor on the surface is estimated with the formulation given in the literature. The effect of heating temperature, film thickness, and air velocity on drying has been examined to figure out the drying characteristics of the sludge layer.

키워드