不同粮种的通风阻力特性研究  

Study on Ventilation Resistance Characteristics of Different Grains

作　　者：雷丛林 李岩 张何英 张来林[3] 吴东亮 方江坤 LEI Cong-lin;LI Yan;ZHANG He-ying;ZHANG Lai-lin;WU Dong-liang;FANG Jiang-kun(Sinograin Zhangzhou Depot Ltd.Company,Zhangzhou,Fujian 363105,China;Fujian Grain Reserves Co.,Ltd.Zhangzhou Depot,Zhangzhou,Fujian 363000,China;School of Food Science and Technology,Henan University of Technology,Zhengzhou,Henan 450001,China;Sinograin Xiamen Depot Ltd.Company,Xiamen,Fujian 361026,China;Fujian Grain Reserves Co.,Ltd.Zhangpu Depot,Zhangzhou,Fujian 363200,China)

机构地区：[1]中央储备粮漳州直属库有限公司,福建漳州363105 [2]福建省储备粮管理有限公司漳州直属库,福建漳州363000 [3]河南工业大学粮油食品学院,河南郑州450001 [4]中央储备粮厦门直属库有限公司,福建厦门361026 [5]福建省储备粮管理有限公司漳浦直属库,福建漳州363200

出　　处：《粮油食品科技》2023年第3期175-182,共8页Science and Technology of Cereals,Oils and Foods

基　　金：河南省现代农业产业技术体系建设专项资金(S2015-02-G06)。

摘　　要：通过对不同粮种通风实验中粮堆阻力等相关参数的检测结果可知:单位粮层阻力与粮面表观风速呈显著正相关,多项式二次函数对其拟合度更高;且粮面表观风速相同时大豆粮堆的单位粮层阻力相对较小,玉米次之,稻谷和小麦相对较大,即单位粮层阻力与粮食籽粒的结构、表面的光滑度与粮堆孔隙度等有关。穿网阻力随着粮面表观风速的增大而逐渐增大,两者呈显著正相关,且粮面表观风速增大到一定程度后穿网阻力均会急剧增大,故通风过程中不能盲目选择大风量通风,以避免能耗。而粮堆的通风均匀度与风量关系不大,主要随粮层厚度的增加而逐渐增大,不同粮种的通风均匀度大小关系是:稻谷<小麦<大豆<玉米,这与粮食的籽粒形状、堆叠结构有关。The results of resistance characteristics in different grains during ventilation experiments showed that the resistance of unit grain layer was positively correlated with the surface wind speed of grain,and the polynomial quadratic function had the higher fitting degree for them.When the surface wind speed of grain was at the same level,the resistance of unit grain layer in soybean was lower,followed by corn but that of rice and wheat was higher,indicating that the resistance of unit grain layer was related to grain structure、surface smoothness and porosity.The resistance of net was positively correlated with the surface wind speed of grain,with the increase of surface wind speed and the resistance of net during ventilation process.The resistance of net could increase sharply when the surface wind speed increased to a certain extent.In order to avoid the waste of energies,the large volume shouldn’t choose blindly during the process of ventilation.The ventilation uniformity of grain increased gradually with the increase of the grain layer thickness,which was less affected by the ventilation volume when the ventilation uniformity of different grains was compared,rice was lower,follow by wheat,and soybean and corn was higher,which was related to grain shape and stacking structure.

关 键 词：粮种 机械通风 单位粮层阻力 穿网阻力 

分 类 号：TS201.6[轻工技术与工程—食品科学] S-3[轻工技术与工程—食品科学与工程]