An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and an evaporative cooler. Air enters the heating section at 14°C and 60 percent relative humidity at a rate of 30 m3 /min, and it leaves the evaporative cooler at 25°C and 45 percent relatively humidity. Determine (a) the temperature and relative humidity of the air when it leaves the heating section, (b) the rate of heat transfer in the heating section, and (c) the rate of water added to air in the evaporative cooler.
An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and an evaporative cooler. Air enters the heating section at 14°C and 60 percent relative humidity at a rate of 30 m3 /min, and it leaves the evaporative cooler at 25°C and 45 percent relatively humidity. Determine (a) the temperature and relative humidity of the air when it leaves the heating section, (b) the rate of heat transfer in the heating section, and (c) the rate of water added to air in the evaporative cooler.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and an
evaporative cooler. Air enters the heating section at 14°C and 60 percent relative humidity at a rate of 30
m3
/min, and it leaves the evaporative cooler at 25°C and 45 percent relatively humidity. Determine (a) the
temperature and relative humidity of the air when it leaves the heating section, (b) the rate of heat transfer in the
heating section, and (c) the rate of water added to air in the evaporative cooler.
Transcribed Image Text:An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and an
evaporative cooler. Air enters the heating section at 14°C and 60 percent relative humidity at a rate of 30
m³/min, and it leaves the evaporative cooler at 25°C and 45 percent relatively humidity. Determine (a) the
temperature and relative humidity of the air when it leaves the heating section, (b) the rate of heat transfer in the
heating section, and (c) the rate of water added to air in the evaporative cooler.
14°℃
60%
30 m/min
Heating
coils
Air
T₂
25°C
45%
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