Performance of a Rectangular Downdraft Open-top Kiln for a Dual Burner
doi: 10.14456/mijet.2022.40
Keywords:
Fire brick, Specific energy consumption, Downdraft open-top kilnAbstract
Bricks are well known materials used to support many constructions. The kiln is very simple and common equipment used to product the brick with firing technique taught from generation to generation. This work aims to evaluate the temperature distribution in the firing room and the specific energy consumption (SEC) of the proposed rectangular downdraft open-top kiln for a dual burner. The proposed kiln had dimension of 4 m x 8 m x 2.5 m (width x length x height); consisting of a dual burner with the wall thickness of 0.54 m. There were 50,997 pieces of bricks with the weight of 56,678 kg which were tested for proposed firing processes using the firewood as a fuel. The results showed that there were 74 hr of firing processes required; consisting of 18 hr for the preheating, 30 hr for the firing, and 26 hr for the cooling. The temperature distribution in the designed firing room was 597-721 °C for the side-walls where the top wall was 812 °C. The SEC was 2.52 MJ/kg fired brick.
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