Drying characteristic of barley under natural convection in a mixed-mode type solar grain dryer
Thin-layer solar drying characteristics of barley were determined at average natural air flow temperature ranging from 43.4 to 51.7 C and for relative humidities ranging from 16.5% to 37.5%. A mixed-mode type natural convection solar dryer was used for this experiment. The data of sample weight, and dry and wet bulb temperatures of the drying air were recorded continuously throughout the drying period for each test. The drying data were then fitted to the Page model. The model gave a good fit for the moisture content with an average standard error of 0.305% dry basis. The parameter N in Page's equation was assumed as a product-dependent constant which made it easy to compare the effects of independent variables on the natural convection solar drying rate without causing considerable error in predicting the drying rate for barley. A linear relationship was found between the parameter K, temperature T, and relative humidity R{sub H}.
- Research Organization:
- Ehime Univ., Matsuyama (JP)
- Sponsoring Organization:
- Japanese Society for the Promotion of Science
- OSTI ID:
- 20050692
- Country of Publication:
- United States
- Language:
- English
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