CHE 304

Transport Phenomena III

 Quiz # 3 

Air (Component B) flows in a concentric cylinder.  The diameters of the cylinders are D1 and D2.  The inner surfaces of both cylinders are coated with Naphthalene (Component A) layer which has sublimation pressures of PAs. The partial pressure of Naphthalene is PAi at the inlet of the cylinder and PAo at the outlet of the cylinder.  The cylinder length is L.  Write the governing mass transfer equations for Naphthalene and state all assumptions.  Also, write appropriate boundary conditions to solve for the composition profile of Naphthalene.