Air at I atm, 18 C, and 50 percent relative humidity is first heated to 40...

 

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Air at I atm, 18 °C, and 50 percent relative humidity is first heated to 40 °C in a heating section and then adiabatically saturated (at constant wet bulb temperature) by introducing water vapor. The air leaves the humidifying section at 80 percent relative humidity. Mass flow rate of the air is 0.1 kg/s. Heating coils 1 atm T = 18°C 1 = 50% 3 = 80% T;=? AIR T; = 40°C (a) show the process on a psychrometric chart, (b) determine the amount of steam added to the air (m) in the humidifying section, (c) determine the amount of heat transfer to the air (Qm) in the heating section, (d) determine the dry bulb temperature of outlet air (T;) from the humidifying section. Air at I atm, 18 °C, and 50 percent relative humidity is first heated to 40 °C in a heating section and then adiabatically saturated (at constant wet bulb temperature) by introducing water vapor. The air leaves the humidifying section at 80 percent relative humidity. Mass flow rate of the air is 0.1 kg/s. Heating coils 1 atm T = 18°C 1 = 50% 3 = 80% T;=? AIR T; = 40°C (a) show the process on a psychrometric chart, (b) determine the amount of steam added to the air (m) in the humidifying section, (c) determine the amount of heat transfer to the air (Qm) in the heating section, (d) determine the dry bulb temperature of outlet air (T;) from the humidifying section.