The design and construction of a mechanized fermenter-drier prototype equipped with heated air supply and scrapping mechanisms for cleaning and mixing are described. The objective of this research is to develop a mechanized system capable for performing cocoa fermentation and drying in a single unit. The design of the prototype is based on the rotary drier design and consisted of two horizontal, perforated, concentris aluminium cylinders constructed from aluminium plates. The prototype can be loaded with 700 kg of wet cocoa beans and provision for drainage is through the perforated surface of the outer drum.
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