Q. 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 (Solved)
1. 60 kcal/m2-hr
2. 600 kcal/m2-hr
3. 120 kcal/m2-hr
4. 300 kcal/m2-hr
5. 450 kcal/m2-hr
- d. 300 kcal/m2-hr