Solve the below:
Q: Determine the rate of heat loss in Btu/h from the wall of a building in a 10-mph wind blowing parallel to its surface. The wall is 80 ft long, 20 ft high, its surface temperature is 80°F, and the temperature of the ambient air is 40°F.
GIVEN
The wall of a building with wind blowing parallel to its surface
Wind speed (UW) = 10 mph = 5.28 A? 104 ft/hr
Length of wall (L) = 80 ft
Height of wall (H) = 20 ft
Surface temperature (Tw) = 80°F
Ambient air temperature (TA) = 40°F
ASSUMPTIONS
Steady state
There is negligible moisture in the air
The wind blows along the length of the wall and parallel to it
Radiative loss isnegligible
