【摘要】 为了给谷物烘干机的设计提供基础参数 ,本文在GIS—II型干燥试验台对小麦烘干工艺参数进行了试验研究 ,得出了麦层阻力与麦层厚度和穿透风速的关系曲线、以及不同条件下小麦的烘干特性曲线 ,并比较了风温、缓苏时间和穿透风速对小麦烘干工艺的影响。研究认为 ,小麦采用穿透风速小于 0 .5m/s进行穿流干燥时 ,麦层厚度小于 2 0 0mm ,缓苏时间 1 0min ,低温大风量烘干较适宜。更多还原

【Abstract】 In order to provide basic parameters for the design of grain drier, experimental study on hot air drying technology of wheat was carried on Gls Ⅱ type drying testing bench. The relationship between static pressure and depth of wheat layer, the relationship between static pressure and air flow speed were obtained. The drying characteristic curves of different drying condition were plotted.The effects on the hot air drying technology of wheat in different air temperature, cease heating time and air flow speed were compared. Through experiment the suitable drying technology parameters for wheat were as follows:(1) The depth of wheat layer was less than 200mm. (2) The hot air flow speed was lower than 0.5m/s.(3) The cease heating time was about 10 minutes. (4) Lower temperature and heavier ventilation was more suitable.更多还原