Solar irradiation of 1100 W/m2 is incident on a large flat horizontal metal roof on a day
when the wind blowing over the roof causes a convection heat transfer coefficient of 25
W/m2-K. The outside air temperature is 27oC, the metal surface absorptivity for incident
solar radiation is 0.60, the metal surface emissivity is 0.20, and the roof is well insulated
from below
a) Estimate the roof temperature under steady-state conditions
b) Explore the effect og changes in the absorptivity, emissivity and convection heat
transfer coefficient on the steady-state temperature.