A sample of air has a dry-bulb temperature of 30°C and a wetbulb temperature of 20°C. Calculate the relative humidity, the specific volume, and the enthalpy, if the pressure is: (i) 85 kPa and (ii)...

A sample of air has a dry-bulb temperature of 30°C and a wetbulb temperature of 20°C. Calculate the relative humidity, the specific volume, and the enthalpy, if the pressure is: (i) 85 kPa and (ii) 101 kPa. Show how the state of the air is located on a psychrometric chart.