Formula 8.51

Unsteady evaporation of a liquid

Input(s)

S: Surface Area $\left(\mathrm{cm}^{2}\right)$

$\varnothing$: Location of Film $(\mathrm{cm})$

$D_{A B}$: Difussivity $\left(\mathrm{cm}^{2} / \mathrm{s}\right)$

$\mathrm{t}$: Time $(\mathrm{s})$

Output(s)

$V_{a}$: Rate of Evaporation $(\mathrm{cc} / \mathrm{s})$

Formula(s)

$$ \mathrm{V}_{\mathrm{a}}=\mathrm{S} * \varnothing *\left(\left(\frac{4 * \mathrm{D}_{\mathrm{AB}} * \mathrm{t}}{\pi}\right)^{0.5}\right) $$

Reference(s)

Bird, R.B., Stewart, W.E. and Lightfoot, E.N. (2002). Transport Phenomena (Second Ed.). John Wiley \& Sons, Chapter: 20, Page: 615.