4. Two coaxial cylinders, r = 3.5 cm, r2 = 8 cm, of equal length (3.5...

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4. Two coaxial cylinders, r₁ = 3.5 cm, r2 = 8 cm, of equal length (3.5 m) are placed inside a very large room maintained at 350 K. Suppose that the inside cylinder is maintained at 520 K, outside at 636 K, determine the net heat transfe at surface 2 when the emissivities are &₁ = 0.37 and 2 = 0.56. 5. In the figure below, the common dimension is 12 in. For the upright plate, A₁ = A2 = A3. For the rectangle parallel t the ground, A4 = 30 in², A5= 18 in². Determine the view factor for F5-1. 9 in 4 1 2 5 3 6 8 in 4. Two coaxial cylinders, r₁ = 3.5 cm, r2 = 8 cm, of equal length (3.5 m) are placed inside a very large room maintained at 350 K. Suppose that the inside cylinder is maintained at 520 K, outside at 636 K, determine the net heat transfe at surface 2 when the emissivities are &₁ = 0.37 and 2 = 0.56. 5. In the figure below, the common dimension is 12 in. For the upright plate, A₁ = A2 = A3. For the rectangle parallel t the ground, A4 = 30 in², A5= 18 in². Determine the view factor for F5-1. 9 in 4 1 2 5 3 6 8 in

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Answer 1 r1 35 r 2 8 equal length ... View the full answer