Solution-Evaluation of mass-transfer process

Evaluation of mass-transfer process

Reference no: EM131322005

Consider a hemispherical droplet of liquid water (species A) on a flat surface, evaporating by molecular diffusion into the surrounding still air (species B). The temperature and the bulk vapor pressure of water in the surrounding still air are kept constant, and you may assume the change in the droplet radius, r, is negligible during this process.

a) What coordinate system best describes this diffusion process?

b) List five reasonable assumptions that will simplify the evaluation of this mass-transfer process.

c) Based on the assumptions, derived a simplified general differential equation that describes the mass transfer of A.

d) Generate an equation for N_a as a function of the diffusion coefficient.

Reference no: EM131322005

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Evaluation of mass-transfer process : a) What coordinate system best describes this diffusion process? b) List five reasonable assumptions that will simplify the evaluation of this mass-transfer process.

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Evaluation of mass-transfer process

Reference no: EM131322005

Reference no: EM131322005

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