The outside dimensions of a small cubical furnace constructed of fire clay bricks (K = 2...

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The outside dimensions of a small cubical furnace constructed of fire clay bricks (K = 2 W/mK) are 0.5 m × 0.5 m ×0.5 m, the walls are being 0.1 m thick. The temperatures at the inside and outside surface temperatures are 500°C and 50°C respectively. Also the heat transfer coefficient for top surface is 12 W/m²K, bottom surface is 8 W/m²K and side surfaces is 15 W/m²K with surrounding temperature taken as 35°C. The heat transfer from the cube to the surroundings is (A) 0.3 KW (B) 0.6 KW (C) 9 KW (D) 12 KW The outside dimensions of a small cubical furnace constructed of fire clay bricks (K = 2 W/mK) are 0.5 m × 0.5 m ×0.5 m, the walls are being 0.1 m thick. The temperatures at the inside and outside surface temperatures are 500°C and 50°C respectively. Also the heat transfer coefficient for top surface is 12 W/m²K, bottom surface is 8 W/m²K and side surfaces is 15 W/m²K with surrounding temperature taken as 35°C. The heat transfer from the cube to the surroundings is (A) 0.3 KW (B) 0.6 KW (C) 9 KW (D) 12 KW

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