I am trying to make a program to calculate heat balance of a hollow black sphere which is under sun. So I have to add direct solar radiation, diffuse solar radiation, longwave sky radiation and longwave radiation from surrounding surfaces as radiation input on the sphere and radiation out would...
I am looking for heat transfer from a heated hollow sphere to air by convection. say sphere temperature is 40 deg air temperature is 30. what would be convective heat transfer coeffeicent for sphere? how much heat will removed from the air if sphere diameter is .15 meter?
