4. An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and a humidifier that supplies wet steam (saturated water vapor) at 100°C. Air enters the heating section at 10°C and 70 percent relative humidity at a rate of 35 m³/min, and it leaves the humidifying section at 20°C and 60 percent relative humidity. Determine, a) the temperature and relative humidity of air when it leaves the heating section, b) the rate of heat transfer in the heating section, c) the rate at which water is added to the air in the humidifying section. Figure for Q4 Sat. vapor 100°C Heating coils Humidifier 10°C Q000000) Air 20°C 70% 35 m³/min 60% P = 1 atm

Elements Of Electromagnetics
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ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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4. An air-conditioning system operates at a total pressure of 1 atm and consists of a heating
section and a humidifier that supplies wet steam (saturated water vapor) at 100°C. Air enters
the heating section at 10°C and 70 percent relative humidity at a rate of 35 m3/min, and it
leaves the humidifying section at 20°C and 60 percent relative humidity. Determine,
a) the temperature and relative humidity of air when it leaves the heating section,
b) the rate of heat transfer in the heating section,
c) the rate at which water is added to the air in the humidifying section.
Figure for Q4
Sat. vapor
100°C
Heating
coils
Humidifier
10°C 00000)
Air
20°C
70%
35 m/min
60%
P = 1 atm
Transcribed Image Text:4. An air-conditioning system operates at a total pressure of 1 atm and consists of a heating section and a humidifier that supplies wet steam (saturated water vapor) at 100°C. Air enters the heating section at 10°C and 70 percent relative humidity at a rate of 35 m3/min, and it leaves the humidifying section at 20°C and 60 percent relative humidity. Determine, a) the temperature and relative humidity of air when it leaves the heating section, b) the rate of heat transfer in the heating section, c) the rate at which water is added to the air in the humidifying section. Figure for Q4 Sat. vapor 100°C Heating coils Humidifier 10°C 00000) Air 20°C 70% 35 m/min 60% P = 1 atm
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