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A packed countercurrent water-cooling tower using a gas flow rate of G = 1.5 kg dry air/s.m2 and a water flow rate of L = 1.5 kg water/s.m2 is to cool the water from TL2 = 45°C to TL1 = 30°C. The entering air at 30°C has a wet bulb temperature of 24°C. The mass-transfer coefficient kGa is estimated as 1.2 x 10^-2 kgmol/s.m3.Pa and hLa/kGaMBP as 4.2 x 104 J/kg.K. Calculate the height of packed tower Z. The tower operates at a pressure of 1.103 x 10⁵ Pa.

A packed countercurrent water-cooling tower using a gas flow rate of G = 1.5 kg dry air/s.m2 and a water flow rate of L = 1.5 kg water/s.m2 is to cool the water from TL2 = 45°C to TL1 = 30°C. The entering air at 30°C has a wet bulb temperature of 24°C. The mass-transfer coefficient kGa is estimated as 1.2 x 10^-2 kgmol/s.m3.Pa and hLa/kGaMBP as 4.2 x 104 J/kg.K. Calculate the height of packed tower Z. The tower operates at a pressure of 1.103 x 10⁵ Pa.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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A packed countercurrent water-cooling tower using a gas flow rate of G = 1.5 kg dry air/s.m2 and a water flow rate of L = 1.5 kg water/s.m2 is to cool the water from TL2 = 45°C to TL1 = 30°C. The entering air at 30°C has a wet bulb temperature of 24°C. The mass-transfer coefficient kGa is estimated as 1.2 x 10^-2 kgmol/s.m3.Pa and

hLa/kGaMBP as 4.2 x 104 J/kg.K. Calculate the height of packed tower Z. The tower operates at a pressure of 1.103 x 10⁵ Pa.

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