In a spherical liquid hydrogen storage vessel the inner cont

In a spherical liquid hydrogen storage vessel, the inner container (surface 1) has a surface area of 5.4 m^2, a temperature of 20 K, and a surface emissivity of 0.2. The outer container (surface 2) has a surface area of 6.2 m^2, and a surface emissivity of 0.8 and is at a temperature of 305 K. The inner container (surface l) has a view factor to the outer (surface 2) of l. a. What is the heat transfer to the inner vessel in Watts?

Solution

Heat transfer to the inner wall = 5.67 * 10^-8 * (0.8 * 6.2 * 305^4   - 0.2 * 5.4 * 20^4)

                                             = 2433.67367 W