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대류 건조 방식을 통한 액상 계면 활성제의 건조 특성 분석 및 입자성 물질과의 비교
심재우(Jaewoo Sim),오상현(Sanghyun Oh),박기호(Kiho Park),김동립(Dongrip Kim),김성일(Sungil Kim) 대한기계학회 2021 대한기계학회 춘추학술대회 Vol.2021 No.11
In this study, experiment of convection drying method was conducted to analysis the drying characteristics liquid material(i.e., surfactant) and compared with drying characteristics of particle material(i.e., carrot). The surfactant having the initial moisture content of 69% was used to carry out the drying experiment and the drying air temperature was setted the 110 and 130°C. For both surfactant and carrot, the equilibrium moisture content decreased as the drying air temperature increased. In the case of surfactant, the time required to reach the equilibrium moisture content decreased by 44.4% as the drying air temperature increased, but the time difference was insignificant in the case of carrots. The average drying rate in the falling rate drying period increased with the drying air temperature increased for both surfactant and carrot. Constant rate drying period were found during the drying process of surfactant and carrots at 130°C and 80°C respectively, but the constant rate drying period were not found during the drying process of surfactant and carrots at 110°C and 90°C respectively.