A highly conducting very thin plate of length L = 2 m separates two air streams that are in parallel flow over opposite surfaces of the plate. One air stream

has a temperature Ta1 = 250°C and Re1 = 3x10°, while the other stream has a Re2 =4x105. The surface temperature is 250°C. Assume the critical Reynolds Numberis Rexc =5x105. Calculate the average heat transfer coefficient for each stream; b. Calculate the total heat transfer between the two streams per unit width of wall, q'; What is the temperature of the second air stream, To2? k1 = 0.039 W/m-K, Pr = 0.68 K2 = 0.032 W/m-K, Pri = 0.69%3D