A TEMPERATURE STUDY OF DOUBLE LAYERS CHARCOAL KILN USING CFD
Keywords:
Charcoal, Charcoal kiln, CFD, Temperature efficiency, Air velocityAbstract
This research aimed to study the temperature efficiency of vertical charcoal metal kiln compared between the original kiln and improved charcoal kiln with thermal insulation to prevent heat loss. The computational fluid dynamics (CFD) model was used for analysis. The improved charcoal kiln with thermal insulation to prevent heat loss to change airflow within kiln’s chamber. Components of improved kiln consisted of; 1) The insulated cover lid made from fiberglass in cylindrical shape with thickness of 10 cm., height of 100 cm., and diameter of 65 cm., wrapped with steel sheet 2 mm. of thickness; 2) The metal combustion chamber in cylindrical shape, with 56 cm. of diameter, 89 cm. of height and 0.2 m3of capacity; 3) Metal grate placed 10 cm. inside the combustion chamber; 4) The kiln base for fuel input, with space for airflow to the chimney and for sand input in order to prevent heat loss while testing; and 5) The 4 inches pipe-shaped steel chimney, with thickness of 2 mm. and height of 200 cm. The computational fluid dynamics (CFD) model found that the maximum temperature was similar. When, it was compared the double layers vertical charcoal metal kiln to prevent heat loss with the original kiln, it was found that the average temperature was improved at 277.54K, the charcoal kiln temperature efficiency was improved at 51.47 percentage, the average air velocity was improved at 1.26 m/s, of which resulted from the change of airflow direction (stream line).
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