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Experimental studies on hemi cylindrical walk-in type solar tunnel dryer for grape drying

N.S. Rathore and N.L. Panwar

Applied Energy, 2010, vol. 87, issue 8, 2764-2767

Abstract: A walk-in type hemi cylindrical solar tunnel dryer has been built with heat protective north wall at College of Dairy and Food Science Technology, Udaipur, India for drying agricultural & horticulture product on large scale. In this paper attempt has been made to evaluate the performance of developed dryer to dry the seedless grapes (mutant: Sonaka). The study show that chemically untreated grapes took seven days to dry at 16% (wb) moisture content. The temperature gradient inside the tunnel dryer is about 10-28 °C during the clear day, which is quite sufficient to dry agricultural commodities.

Keywords: Solar; tunnel; dryer; Grape; drying; North; wall; Drying; time (search for similar items in EconPapers)
Date: 2010
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Handle: RePEc:eee:appene:v:87:y:2010:i:8:p:2764-2767