Abstract
In this report, excess air coefficient, efficiency of combustion, combustion temperature, and overall ccefficient of heat transfer of the hot air furnace for tea manufacturing under various operating conditions were calculated.From these results, the authors discussed the combustion and heat transfer mechanism of the furnace, and determined the optimum burning condition. Moreover, the authors.found that the furnace had not been operated at this optimum condition in the tea manufacturing process, and some points to be improved of the furnace existed in the heat transfer of the heating chamber.When a new furnace would be designed, the overall heat transfer ccefficient must be raised and also be operated under the optimum burning condition in the practical use.
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