Determine the total heat transfer from the vertical wall described in Problem 19.19 to the surrounding air per meter of width if the wall is 2.5 m high.

Data From Problem 19.19

Using the relations from Problem 19.8, determine, for the case of air at 310 K adjacent to a vertical wall with its surface at 420 K,
a. The thickness of the boundary layer at x = 15 cm, 30 cm, 1.5 m
b. The magnitude of h_x at 15 cm, 30 cm, 1.5 m