A cool stream of air enters a heater and humidification system at a temperature of 5°C, 1 atm, a relative humidity of 60%, and a volumetric flow rate of 0.25 m3/s. The air is to exit the system at 22°C and a relative humidity of 45%. The humidification process is to use evaporation of liquid water whose temperature is 20°C. Determine the temperature and relative humidity of the air between the heater and humidifier, the rate of heat transfer to the air through the heating element, and the rate of water addition to the air through the humidifier section.
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