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Q. |
A sphere 15 cm in diameter is covered with 5 cm of insulation (k = 0.057 kcal/m-hr-?C). The inside and outside surface temperature of the insulation are 315?C and 80?C respectively. The heat loss per sq. m of the outside surface will be closer to |
A. | 80 kcal/hr |
B. | 320 kcal/hr |
C. | 160 kcal/hr |
D. | 37,500 kg |
E. | 40 kcal/hr |
Answer» C. 160 kcal/hr |
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