The flow chart for evaluating the e

The flow chart for evaluating the energy saving of longan dryer having desiccant unit is shown in figure 4. The inlet conditions of air stream and number of trays are input to the simulation program. Then the conditions of air leaving the desiccant unit are calculated. These conditions are used for calculating the inlet enthalpy of the air entering the burner. After that, the energy input for rising the air temperature is predicted by assuming the outlet temperature of air leaving the burner at 80 ºC. The energy saving of this system can be evaluated by compares this result with the non-desiccant unit.