A closed vessel contains moist air at 30°C and 2.14 bar. When the system is cooled at constant pressure, it was observed that water droplets began to appear at a temperature of 20°C. What is the humidity ratio of the moist air? Express your answer in kg v/kg da.

Air enters the heating section of an air-conditioning at 1atm, 10C, and 70 percent relative humidity at a rate of 35m^3/min, and it leaves the humidifying section at 20C with a relative humidity of 90 percent. If the humidifier supplies wet steam at 100C, determine: The temperature and relative humidity of the air leaving the heating section The rate of heat transfer in the heating section

room contains air at 30 degrees * C and a total pressure of 96.0 kPa with a relative humidity of 75 percen ermine (a) the partial pressure of dry air and (b) the specific humidity.

Outdoor air at 35°C dry-bulb and 19°C dewpoint temperatures are to be mixed with room air at 26°C dry-bulb temperature and specific humidity of 0.0105 kgv/kga. The mass of outdoor air is one-third of the mass of the mixture. Find the following properties of the mixed air: Dry-bulb temperature Specific humidity Enthalpy Relative humidity Dewpoint temperature Specific volume

2. The dry bulb temperature and wet bulb temperature are respectively 25 oC and 15 oC at a certain location. Determine Dew-point Temperature, Relative Humidity, Saturation Vapor Pressure and Actual Vapor pressure.