Solar Collector Design and Curing Effect of the Bulk Curing Barn
The curing effect between the bulk curing barn installed with sunlight greenhouse solar collector of low cost and the ordinary bulk curing barn was studied.The bulk curing barns were up-draft bulk barns.The results showed that the average coal consumption were significantly lower in the solar-heating barn(564.5 kg/kg)than the ordinary bulk curing barn(691.7 kg/kg).The coal consumption rate was 19.18% lower in the solar-heating barn than the ordinary bulk curing barn.The electricity consumption rate was 6.95% lower in the solar-heating barn.The graded structure and appearance quality of the dried tobacco leaves was slightly better in the solar-heating barn than the ordinary bulk curing barn.The main chemical components content had no significant difference.The aroma components content of the dried tobacco leaves was higher in the solar-heating barn than the ordinary bulk curing barn.It is conclude that the effect of energy-saving and environmental protection was obvious and the quality of the dried tobacco leaves was improved in the solar-heating barn than the ordinary bulk curing barn.