A direct forced convective solar tunnel greenhouse dryer (aperture area of 4 m 2) was designed, manufactured and commissioned at Wardha, India for food processing. Membership Price: $110.99 Members Save: $19.00 (15%) List Price: $129.99. Add To Cart. THE COMPLETE DEHYDRATOR SET. Membership Price: $104.99 Members Save: $9.95 (9%) List Price: $114.94. Add To Solar drying experiments of Andrographis paniculata were conducted in Nakhon Pathom, Thailand. For this purpose, a new type parabolic-shaped solar tunnel dryer was designed and manufactured. Solar dryer consisted of a flat-plate solar collector and a drying tunnel. The collector and the drying tunnel were covered with polycarbonate plates to Solar Tunnel Dryer. Using the power of the sun to preserve food and other agriculture products has been practiced for centuries. In the traditional way crops are dried directly in the sun under the open sky. The major disadvantage of this traditional method is that the goods are exposed to dust, animals, insects, wind and moisture. The literature review substantiates that indirect and mixed-mode solar dryers with phase change material have more potency in drying agricultural products than direct-drying solar dryers. The mixed-mode tent-type solar dryer decreases the moisture content of the fish from 89 % to 10 % in 18 h, while it takes 38 h when compared with an open sun The developed solar tunnel dryer have a drying capacity of 60 kg per batch with an average sample bed thickness of 3 cm. Considering the minimum area required for heating section, drying section and exhaust section, the overall dimensions of solar tunnel dryer was fixed to 6.51 × 1.8 × 1.1 m (L*W*H). The dryer consists of few pairs (four) of The solar drying behavior of tomato slices in a twin layer solar tunnel dryer were adequately described by Page model. The Effective moisture diffusivity values for twin layer solar tunnel dried tomato slices vary from 5.07*10 −10 to 6.08 × 10 −10 m 2 /s which is much higher than open sun dried samples. DOtk8.
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