JIANG Dazhi1, 2 , SHI Tong1 , SUN Junlan2
(1. School of Mechanical Engineering , Yancheng Institute of Technology, Yancheng 224051, China；2. School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China)
Abstract： To investigate the effect of diameter ratio in a pulsed pneumatic dryer on drying performance, a comparative study was conducted between five kinds of pulsed pneumatic dryers with different diameter ratios. By the computational fluid dynamics technology, the drying process of the dryers was numerically simulated. The result shows that with the increase of the diameter ratio, the movement of particles in the dryers becomes more and more disordered, which prolongs residence time of the particles and results in a better drying effect. The pressure loss increases with the increase of diameter ratio, which leads to improvement of energy efficiency. There is a best diameter ratio in the pulsed pneumatic dryer. The value should be chosen based on the comprehensive influence of the pressure and drying effect.
Keywords: pulsed pneumatic dryer; diameter ratio; numerical simulation; pressure loss
中图分类号：TK173 文献标志码：A
文章编号：1008-5548（2014）06-0025-04
DOI:10.13732/j.issn.1008-5548.2014.06.006
收稿日期：2014-03-13， 修回日期：2014-05-04，在线出版时间：2014-12-22。
基金项目：江苏省新型环保重点实验室开放基金项目，编号：AE201033。
第一作者简介：姜大志(1957—)，男，博士，教授，硕士生导师，研究方向为过程装备及环保机械。电话：13962089677，E-mail：502213508@qq.com。
