Design of highly efficient solar van drying room

To solve the low dry efficiency and bad product quality of traditional drying way, using solar energy as heat, according to the drying character and hot air drying mechanism of agricultural product, a highly active production configuration solar energy van drying room was designed and made. This new solar energy drying room has van structure, force-nature air ventilation technology and reentry double heat transfer technology. Study results showed that solar drying room in the daily maximum temperature was 12.5℃, the daily average temperature was 6.6℃, its internal temperature was uniform, grape drying time reduced to 20 d, the rate of green-class products increased 48.43% more than traditional methods. The new solar energy drying room can be used in fruit and vegetable, Chinese crude drug and other agricultural product drying fields.