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 12°C and 50 percent relative humidity at a rate of 20 m³/min, and it leaves the evaporative cooler at 25°C and 40 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.
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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 12°C and 50 percent relative humidity
at a rate of 20 m³/min, and it leaves the evaporative cooler at 25°C and 40 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 12°C and 50 percent relative humidity at a rate of 20 m³/min, and it leaves the evaporative cooler at 25°C and 40 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.
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