The uniformity of feed moisture content is an important parameter related with pellet quality.That the structure and process parameters of the dryer influence the uniformity of air distribution inside the dryer,thus affecting the feed uniformity of the moisture content.Effects of different deflector angles(30°,40°,50°),number of side air duct flow plate(1,2,3)and fan frequency(20 Hz,30 Hz,40 Hz)on airflow distribution are studied by the method of orthogonal experiment.The results show that the fan frequency has the greatest effect on the wind velocity field of the upper layer and the angle of the deflector plate has the least effect on the wind velocity field of the upper layer.The angle of deflector plate has the greatest influence on the wind speed field of the lower layer and the fan frequency has the least influence on the wind speed field of the lower layer.When factor level combination is 30° angle of deflector plate,3 side air duct flow plates and 20 Hz fan frequency,the wind velocity field in the dryer is the most uniform.
关键词
带式烘干机/风速场均匀性/CFD仿真/DOE设计
Key words
belt dryer/wind velocity field uniformity/CFD simulation/DOE design
维普
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