A rectangular plastic sheet $(L=1\mathrm{.}52m,W=1\mathrm{.}0m)$ was wetted as a result of pouring $500$

gm water. Estimate the time required to dry the plastic sheet if a dry air at $44C$ is being

used with a velocity $15\frac{m}{sec}.$

Given:

The vapour pressure of water at the liquid$/$gas interface $=2487Pa$

Air viscosity $=1\mathrm{.}93{10}^{-5}k\frac{g}{m}.sec$

Air density $=1\mathrm{.}12k\frac{g}{m^3}$

Air molecular weight $=29\frac{g}{g}$mol

$D_{AB}=2\mathrm{.}8{10}^{-5}\frac{m^2}{sec}$

Gas constant, $R=8\mathrm{.}2{10}^{-5}{m}^3*at\frac{m}{g}$mol.$K$

$1$atm$=101325Pa$

Flow of the gas parallel to a flat plate was correlated according to the following equations:

$Sh=0\mathrm{.}036R{e}_L^{0\mathrm{.}8}S{c}^{\frac{1}{3}}(turbulent)R{e}_L>3{10}^5$