Question: Calculate the mass transfer coefficient for a spherical sample made of solid naphthalene in a 25.6 K air flow. Data: Temperature: 325.6 K Pressure: 202.6

Calculate the mass transfer coefficient for a spherical sample made of solid naphthalene in a 25.6 K air flow.

Data: Temperature: 325.6 K Pressure: 202.6 kPa Air velocity: 1.524 m/s Viscosity: 1.968x10-5 kg/m.s Density: 1.0876 kg/m3 Diffusion coefficient of naphthalene in air (at 273 K and 101.3 kPa): 5.16x10-6 m2/s Sphere diameter: 12.7 mm

For the flow system with a single sphere, use the equation: Sh = 2 + 0.552 Re^0.53Sc^(1/3)

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