A wetted-wall experimental setup consists of a glass pipe, \(50 \mathrm{~mm}\) in diameter and \(1.0 \mathrm{~m}\) long. Water at \(300 \mathrm{~K}\) flows down the inner wall. Dry air enters the bottom of the pipe at the rate of \(1.04 \mathrm{~m}^{3} / \mathrm{min}\), measured at \(308 \mathrm{~K}\) and \(1 \mathrm{~atm}\). It leaves the wetted section at \(308 \mathrm{~K}\) and with a relative humidity of \(21.5 \%\). With the help of equation (2-87), estimate the average mass-transfer coefficient, with the driving force in terms of molar fractions.

Data From Equation 2-87:-

Transcribed Image Text:

PAout PA1-exp PA kaPZ GM (2-87)