The integrated solar dryer


In the integrated solar dryer, the radiation heat transfer and heat convection play a role at the same time so the drying process can be strengthened. The wet air which absorbs moisture is discharged from the exhaust pipe. Through the control valve, the wet air can also makes part of the inlet hot air with supplementary fresh air to circulate and once again goes into the drying chamber to reduce exhaust gas heat loss. The device of solar heat utilization efficiency is high.

This dryer cost is relatively high. Drying rate of this dryer is slower than light focusing type solar dryer.

The focusing type solar dryer


This dryer can increase the drying temperature, speed up the drying rate, and can greatly improve the insecticidal rate.

The disadvantage is that the structure is complex and the cost is high.