<![CDATA[In previous studies, the dryers analyzed were solar dryers with secondary collectors, multilevel racks and exhaust fans. This research succeeded in overcoming the phenomenon of the slow drying process due to the trapping of water vapor coming out of the sample (heap of grain) on the drying rack on the middle and top drying racks. In addition, the air temperature in the dryer cabin does not exceed 70oC so that the quality of the dried product (grain) is guaranteed. The drawback of this dryer is that the exhaust fan used requires a supply of electrical energy so that the efficiency of the dryer is still low. To overcome these deficiencies, this research will be modified by replacing the exhaust fan with a turbine ventilator. This research was conducted at the Mechanical Engineering Laboratory, Faculty of Engineering, Cenderawasih University because it already has sufficient supporting equipment. The method used is an experimental method, which is to make a solar dryer with a 3-level rack type with a secondary collector and a turbine ventilator. Then testing is carried out to determine its characteristics. The results showed that the addition of a turbine ventilator is a solution to overcome the use of electrical energy in solar dryers. The drying process on drying racks 2 (middle) and 3 (top) takes place quickly because the turbine ventilator can work like an exhaust fan. The mass flow rate of air out of the dryer is also good so that the temperature in the dryer cabin is maintained (does not exceed 70oC). The time of grain from the initial moisture content of 24.8% to the final moisture content of 14% is 5 hours (shelf 1); 6 hours (rack 2) and 6 hours (rack 3). The maximum efficiency obtained is 27.35% (rack 1); 24.05% (rack 2); 22.95% (rack 3); 24.78% (mean).]]>
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