A Dewfall-Preventive System for Solar Energy Drying Facility (SEDF)

In use and spreading of solar-energy drying facility (SEDF) ,it is one of the key points to solving dewfall problem in the high humidity inside of SEDF. Through analysis, it is known that as long as the phenomenon of dewfall is constrained upon the inside wall, dewfall inside the drying facility can be basically tackled. On this basis, a dewfall-preventive system is established inside SEDF. A preliminary test shows that, in the system, exchanging air, heating or exchanging air and heating combination can be used to take precautions against the phenomenon of dewfall inside SEDF, with remarkable effects, and being characterized by lower energy consumption and maneuverability. It is of significance to improve and consummate the solar-energy drying technique with the application of this study.