A hollow stainless steel spherical container having 20 cm inside diameter and 30 cm outer diameter (with k = 50 W/mK) holds certain liquid. Its inner and outer surfaces are at 250 and 100°C. Find...

A hollow stainless steel spherical container having 20 cm inside diameter and 30 cm outer diameter (with k = 50 W/mK) holds certain liquid. Its inner and outer surfaces are at 250 and 100°C. Find radial heat flow and temperature at r = 12.5 cm from the centre.