Energy-efficient thermal drying using impinging-jets with time-varying heat input - A computational study

Jundika C. Kurnia; Agus P. Sasmito; Wei Tong; Arun S. Mujumdar

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Energy-efficient thermal drying using impinging-jets with time-varying heat input - A computational study

机译：使用随时间变化的热量输入的冲击式喷嘴进行的高能效热干燥-计算研究

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This study investigates the performance of impinging-jet drying at various configurations. The computational fluid dynamic (CFD) approach was used for solving the conjugated heat/mass transfer problem during drying with impinging-jets. In short, the model considers slab material with drying chamber, and solve for conservation equations of mass, momentum, species and energy with associated turbulence model. To ensure the validity of the mathematical model, validation with the experimental data is carried out. The effect of jet velocity, pulsation and intermittency on the jet inlet, slab geometry and slab thickness are then investigated. The results are then examined to obtain optimum conditions for impinging-jet drying of model materials in the form of a thin slab. Finally, it is noted that lower energy consumption of impinging-jet with pulsating and/or intermittent flow offers comparable drying kinetics as compared to that with that of a steady jet, which shows potential for energy saving.

机译：这项研究调查了各种配置下的冲击射流干燥性能。计算流体动力学（CFD）方法用于解决在使用射流干燥过程中的共轭传热/传质问题。简而言之，该模型考虑了带有干燥室的板坯材料，并通过相关的湍流模型求解了质量，动量，种类和能量的守恒方程。为了确保数学模型的有效性，对实验数据进行了验证。然后研究了射流速度，脉动和间歇性对射流入口，板坯几何形状和板坯厚度的影响。然后检查结果，以获得冲撞干燥薄板状模型材料的最佳条件。最后，应注意的是，与稳定射流相比，脉动和/或间歇流动的冲击射流的较低能耗提供了可比的干燥动力学，这显示了节能的潜力。

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来源
《Journal of food engineering》 |2013年第2期|269-277|共9页
作者
Jundika C. Kurnia; Agus P. Sasmito; Wei Tong; Arun S. Mujumdar;
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作者单位

Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore, Singapore,Minerals, Metals and Materials Technology Centre, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore, Singapore;

Minerals, Metals and Materials Technology Centre, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore, Singapore,Mechanical Engineering, Masdar Institute of Science and Technology, Abu Dhabi, P.O. Box 54224, United Arab Emirates;

Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore, Singapore;

Department of Mechanical Engineering, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore, Singapore,Minerals, Metals and Materials Technology Centre, National University of Singapore, 9 Engineering Drive 1, 117576 Singapore, Singapore;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
conjugate model; drying; impinging-jet; pulsation; intermittent;

机译：共轭模型烘干;射流脉动;断断续续的;

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Energy-efficient thermal drying using impinging-jets with time-varying heat input - A computational study

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