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1 粮食干燥过程的复杂性干燥是一个复杂的热质交换过程,也是一个耗能最大的加工过程,它不仅受物料特性和介质参数的影响,而且还与气候条件和干燥工艺有重要关系。干燥既是一个物理过程,也是一个生物和化学过程,对干燥的要求不仅是去除水分,而且要求保留它的营养成分,有时还要保持它的色香味。所以,干燥过程研究涉及生物、化学、热力学、机械学和流体力学等多种学科,是一个多学科交叉的加工技术。粮食干燥机的设计和研究,多年来一直停留在依靠经验方法进行设计的
1 The complexity of the food drying process Drying is a complex heat and mass exchange process, which is also one of the most energy intensive processes. It is not only affected by material properties and media parameters, but also has an important relationship with climatic conditions and drying process. Drying is both a physical process and a biological and chemical process. The requirement for drying is not only to remove moisture but also to retain its nutrients and sometimes its color and fragrance. Therefore, the drying process involves biological, chemical, thermodynamic, mechanical and fluid mechanics and other disciplines, is a multi-disciplinary cross-processing technology. The design and research of grain dryers have for many years been designed with empirical methods