The surface temperatures of a flat wall are 650°C and 450°C respectively and the thermal conductivity of the wall material is 0.30 kcal/m-hr-°C. The heat flux for a wall of 20 cm thickness will be
A) 60 kcal/m2-hr
B) 600 kcal/m2-hr
C) 120 kcal/m2-hr
D) 300 kcal/m2-hr
E) 450 kcal/m2-hr
Correct Answer:
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