PLEASE SOLVE IT IN 30 MINUTES

A horizontal shell-and-tube heat exchanger with two tube passes and one shell pass is being used to heat 9 kg/s of 100% ethanol from 15 to 65C at atmospheric pressure. The ethanol passes through the inside of the tubes, and saturated steam at 110CC condenses on the shell side of the tubes. The tubes are steel with an OD of 0.019 m and a Birmingham wire gauge (BWG) of 14. The exchanger contains a total of 100 tubes (50 tubes per pass). The ratio of total inside-tube cross-sectional area per pass to header cross-sectional area per pass S_i /S_H can be assumed to be 0.5.

(a). Estimate the film coefficient for the ethanol

(b). Pressure drop due to friction through the tube side of the exchanger.