The Performance of Clay Furnace with Variation in the Diameters of the Briquette Burning Chamber

Biomass fuel is an alternative energy source used in the form of briquettes using clay stoves.
Utilization of clay as a briquette stove often results are not satisfactory as is the use of other fuel stoves,
this is because the amount of air in the furnace burning chamber has not been determined and focused
properly, so the purpose of this study is to determine the thermal efficiency of the furnace at variations
in the diameter of the aluminum sleeve in the furnace burning chamber. The method used is to test 5
variations in diameter of the furnace burning chamber (cylinder). The results showed the best thermal
efficiency was obtained at 52.87% at 180 mm slab diameter, boiling time at 9 minutes, with a heat loss
of only 2.02 kW.