Email: 
Công ty TNHH Máy Sấy Nông Lâm
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Truong Quang Truong 1, Tran Van Tuan 2, Le Quang Vinh 2, Le Van Tuan1, Vuong Thanh Tien 1
1. Faculty of Engineering & Technology. 2. Center for Agricultural Energy & Machinery.
Nong Lam University
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The International Conference on Agricultural And Bio- System Engineering
Ho Chi Minh City, December 19 -21, 2017
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Abstract
The Pangasius elongates (Ca Dua), especially one-sunning Ca Dua is a favourited food and in high value. However, for now, the only solution has been the open sun drying which causes the problems in the dried fish quality.
A laboratory dryer for 10kg per batch using solar energy was designed and fabricated. Experimental results have shown that the solar collector meet the requirement of drying temperature in range from 40oC to 50oC. Dried fish was satisfied in requirements for moisture content (60% ± 1% wb), whiteness value (56% ± 1%), and microorganic criteria. Furthermore, using CCD with JMP software, the optimal drying parameters was found: 44oC in drying air temperature and 0.24m/s in air velocity.
A solar – assisted dryer with capacity in 100kg/batch was designed, fabricated, and applied at Kim Yen food enterprise in Can Gio District. The dryer’s operation has satisfied all proposed technical requirements. The drying results have shown that the quality of dried Ca Dua is stable, in which, the whiteness value of dried products (57.4%, 57.8%) is higher than that from natural sun drying product (55.8%, 56.2%).
Keywords: Pangasius elongates (Ca Dua), Open sun drying, Solar collector, Specific energy,Whiteness value.
