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This paper presents experimental performance of a large-scale greenhouse solar dryer for drying mangos. The dryer consists of a polycarbonate sheets on a concrete floor. The dryer is 9.0 m in width, 22.0 m in length and 4.0 m in height. Nine 15-W DC fans powered by two 50-W PV module were used to ventilate the dryer. To investigate its performance, the dryer was used to dry ten batches of mangos. For each batch, 500 kilograms of mangos were dried in the dryer. Results obtained from the experiments showed that drying temperatures varied from 32๐C to 65๐C. In addition, the drying time for drying mangos was 3 days, compared to 5 days required for natural sun drying. Mangos dried in the dryer were completely protected from rain and high-quality mangos were obtained. The estimated payback period of the large-scale greenhouse solar dryer is about 2 year.
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