A new natural convection solar dryer consisting of a solar air heater and a drying chamber was developed by Pangavhane et al. This can be used for drying various agricultural products like fruits and vegetables. The qualitative analysis showed that the traditional drying. i.e. shade drying and open sun drying, dried the grapes in 15 and 7 days respectively, while the solar dryer took only 4 days and produced better quality raisins [54l. A direct type natural convection solar dryer was designed, constructed using local materials(wood, blades of glass, and metals) and then tested experimentally in foodstuffs drying(cassava, bananas, and mango) by Gbaha et al. It was about an experimental approach which consists in analyzing the behavior of the dryer and it relates mainly kinetics and establishment of drying heat balances[55
dried the grapes
A new natural convection solar dryer consisting of a solar air heater and a drying chamber was developed by Pangavhane et al. This can be used for drying various agricultural products like fruits and vegetables. The qualitative analysis showed that the traditional drying. i.e. shade drying and open sun drying, dried the grapes in 15 and 7 days respectively, while the solar dryer took only 4 days and produced better quality raisins [54l. A direct type natural convection solar dryer was designed, constructed using local materials(wood, blades of glass, and metals) and then tested experimentally in foodstuffs drying(cassava, bananas, and mango) by Gbaha et al. It was about an experimental approach which consists in analyzing the behavior of the dryer and it relates mainly kinetics and establishment of drying heat balances[55dried the grapes
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