采用自行研制的小型太阳能干燥设备,对干湿梅进行自然对流干燥,测定了相关的实验参数,并进行整体物料及能量衡算.通过改变单位有效太阳辐射能,建立自然对流干燥模型.结果表明：太阳能干燥设备自然对流干燥样品的干燥效率为61.60%,干燥于14 h内完成,较自然日晒干燥时间缩短72.0%;所建立的模型与实验结果吻合较好,相对偏差低于1%.文中结果为太阳能干燥设备的实际应用及广式凉果干燥过程中产品质量的预测、干燥条件的控制提供了理论依据.

The natural convective drying of Ganshimei（intermediate moisture salted plum） was performed using the self-designed small-size solar drying equipment,and the corresponding experimental parameters were detected.Then,the material and energy consumption of the drying system were calculated.Finally,a mathematical model describing the natural convective drying was put forward by changing the effective solar radiant energy per unit.The results show that the natural convective drying using the designed equipment,whose drying efficiency is 61.60%,is of a time cost of 14h,which is only 28.0% of that of the traditional sun drying;and that the proposed model accords well with the experimental results,with a relative deviation being less than 1%.This paper provides the theoretical basis for the application of solar drying equipment and for the quality prediction and drying condition control of Cantonese-style preserved fruits.