Question

A 1 m square, thin plate of solid naphthalene is oriented parallel to a stream of air flowing at 20 m/s. The air system is at 27°C, with kinematic viscosity of 1.57x10-5 m2 s-l. The partial pressure of naphthalene is 26 Pa under these air conditions, and the diffusivity of naphthalene at 27°C is 5.90x10-6 m2s-l. Calculate the flux from the plate at 0.3 m assuming the Sh number correlation Sh =0.0292 Re4/5Sc1/3. The appropriate characteristic length is the distance from the edge of the plate (0.3 m).

Answer 1