Convection dryers are often used for drying solids in food technology. The CE 130 can be used to investigate and demonstrate the process of convection drying of granular solids.
Four corrosion resistant removable plates are available for drying the solid. They are placed in a drying channel. The plates containing the solid to be dried are exposed to an air flow in the channel. The air flow heats the solid and also removes any moisture released. Air velocity can be adjusted by the speed of a fan. An adjustable heater allows the heating of the air. The transparent door in the drying channel allows the drying process to be observed.
A digital balance can be used to follow the changes in weight of the solid due to evaporation or vaporisation of moisture during operation. The flow velocity of the air stream is measured using a sensor. The air temperature and relative humidity before and after the air flow passes over the solid can be recorded and digitally displayed. For precise results, a single combined humidity and temperature sensor is used for both measurements.
The relevant measured parameters (changes in weight, humidity, temperature, air velocity) can be transferred directly to a PC, where they can then be further processed.
