通风过程中进风相对湿度对仓储粮堆温度和水分的影响研究

温度和水分含量是两个重要的物理变量,在研究谷物储存时品质变化起到很大作用。通风用于冷却粮堆并保持温度恒定,以防止水分迁移。良好的通风条件对粮仓内存储安全有显著影响。目前,通风空气相对湿度对粮堆水分影响的研究相对较少。采用数值模拟和实验研究相结合的方式,探索和比较因不同进风相对湿度而引起的通风过程中仓储的小麦温度和水分变化规律。结果表明:进风相对湿度较低时冷却干燥效率更高,小麦粮堆降温更快速,并将昆虫和霉菌的活动保持在较低水平。

Study on the influence of inlet air relative humidity on temperature and moisture of warehouse grain stack during ventilation

Temperature and moisture content are two important physical variables that play a considerable role in the study of quality changes during grain storage. Ventilation is used to cool the grain pile and keep the temperature constant to prevent moisture migration. Good ventilation conditions have a significant impact on the storage safety in the granary. At present, the research on the influence of relative humidity of ventilation air on the moisture of the grain reactor is relatively rare. The changes of grain temperature and moisture during ventilation caused by different inlet air relative humidity were explored and compared by a combination of numerical simulation and experimental research in this paper. According to the results, the cooling and drying efficiency is higher when the relative humidity of the inlet is lower, which makes the wheat grain pile cool more quickly and keeps the activities of insects and molds at a lower level.