A wet cooling tower is to cool 17 kg/s if cooling water from 40C to 30C at a location where the atmospheric pressure 96kPa. Atmospheric
air enters the tower at 20C and 70% relative humidity and leaves saturated at 35C. Neglecting the power input to the fan. Assuming that air
is an ideal gas with constant heats at room temperatures. Air Cp=1.005 kJ/kg•C and k=1.4 and air gas constabt R=0.287 kJ/kg•K
1. The water vapor partial pressure in the air inlet is
2. The air partial pressure in the air inlet is
3. The specific humidity in the air inlet is
4. The mixture specific volume in the air inlet is
5. The vapor partial pressure in the air outlet is
6. The specific humidity in the air outlet is
7. The mixture enthalpy of the air inlet (consider ha=0 at 0C) is
8. The mixture enthalpy of the air outlet (consider ha=0 at 0C) is
9. The enthalpy of liquid water inlet is
10. The enthalpy of liquid water outlet is
11. The air mass flow rate in the air inlet is
12. The air volume flow in the air inlet is
13. The makeup water mass flow rate is