紫花苜蓿换向通风太阳能干燥试验研究

摘要

Aiming at the existence of deep alfalfa drying in the dry uneven phenomenon , in vertical solar oven for revers-ing ventilation drying experiment of alfalfa , interpass temperature monitoring in the grass and the distribution of relative humidity and the moisture content of alfalfa .Test results show that the reversing ventilation drying can shorten the drying time and can improve the drying uniformity;Find out influence on the drying rate , ventilation reversing cycle to improve the efficiency of drying , drying quality and save energy , provide reference basis for further optimization of drying process .%针对紫花苜蓿深层干燥存在的干燥不均匀现象，在立式太阳能干燥箱内对紫花苜蓿进行换向通风干燥试验，监测箱内草层间温度及相对湿度的分布情况及苜蓿含水率变化情况。试验结果表明：换向通风干燥可缩短干燥时间且能提高干燥均匀性；找出通风换向周期对干燥速率的影响关系，达到了提高干燥效率、干燥质量及节约能量目的，为进一步优化干燥工艺提供参考依据。