A hollow sphere of inner radius r1 = 30 cm and outer radius r2 = 50 cm is heated at the inner surface. The temperature a
Posted: Mon Nov 15, 2021 4:14 pm
A hollow sphere of inner radius r1 = 30 cm and outer radius r2 =
50 cm is heated at the inner surface. The temperature at the inside
and outside surfaces of the sphere is T1 and T2. The thermal
conductivity of the material is k = 170 W.(m.K)-1 . (a) Demonstrate
that the rate of heat conduction is computed by the formula: 1 2 1
2 2 1 4 T T P kr r r r . (b) The difference of temperature
between two surfaces of the sphere is 7.0oC. Find the rate of heat
flow out of the sphere.
50 cm is heated at the inner surface. The temperature at the inside
and outside surfaces of the sphere is T1 and T2. The thermal
conductivity of the material is k = 170 W.(m.K)-1 . (a) Demonstrate
that the rate of heat conduction is computed by the formula: 1 2 1
2 2 1 4 T T P kr r r r . (b) The difference of temperature
between two surfaces of the sphere is 7.0oC. Find the rate of heat
flow out of the sphere.