The purpose of developing a solar oven. To study the process of designing a solar oven built. Drying and comparison with solar drying cabinet. With the sun in a natural way. The detailed results of the study are as follows. The physical characteristics of a banana that has a diameter of the head, the middle position, the size, length, average 27.83, 30.44, 28.08, 78.85 mm respectively and weight to the average of 44.62 grams for the design, build cabinets, solar drying. The width 86 cm length 126 cm and 130 cm in height and mounted on casters and four legs to achieve ease of use and mobility. Test results compare with oven dried banana and dried in the sun in a natural way. The volume of bananas the study of three kilograms storage test period. 08.00 to 16.00. Within five days of test data recorded every two hours from the test results showed. When comparing the average temperature outside the oven and the oven was 36.60 degrees and 40.09 degrees, a temperature increase of 3.49 degrees, the percentage rate of drying outside incubators percentage of 59.70 and a high percentage of dry inside incubator percent. 61.63 percent which is 1.93 percent increase the drying rate.
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