A wet cooling tower is to cool 25 kg/s of cooling water from 40 to 30°C, at a location in which the atmospheric pressure is 96 kPa. Atmospheric air enters the tower at 20 °C and 70 percent relative humidity, and leaves saturated at 35 °C. Neglecting the power input to the fan, determine (a) the volumetric flow rate of air at the cooling tower inlet and (b) the mass flow rate of make-up water required.
A wet cooling tower is to cool 25 kg/s of cooling water from 40 to 30°C, at a location in which the atmospheric pressure is 96 kPa. Atmospheric air enters the tower at 20 °C and 70 percent relative humidity, and leaves saturated at 35 °C. Neglecting the power input to the fan, determine (a) the volumetric flow rate of air at the cooling tower inlet and (b) the mass flow rate of make-up water required.
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 wet cooling tower is to cool 25 kg/s of cooling water from 40 to 30°C, at a location
in which the atmospheric pressure is 96 kPa. Atmospheric air enters the tower at 20 °C and 70 percent relative humidity, and leaves saturated at 35 °C. Neglecting the power input to the fan, determine (a) the volumetric flow rate of air at the cooling tower inlet and (b) the mass flow rate of make-up water required.
Transcribed Image Text:WATER
40°C
25 kg/s
7 kPa
System
boundary
3
30°C
Makeup
2
35°C
100%
muffin
1 AIR
96 kPa
20°C
70%
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