A room contains 35 kg of dry air and 0.5 kg of water vapour. The total pressure and temperature of the air in the room are 100 kPa and 25°C respectively. Given that the saturation pressure for water at 25°C is 3.17 kPa, the relative humidity of the air in the room is
71%
Humidity ratio is 0.5/35=1/70. Vapour pressure is ωp/(0.622+ω)≈2.245 kPa. Relative humidity is 2.245/3.17≈0.708, or 71%.
Important Questions from Properties of Moist Air (Psychrometric Properties)
Spray humidifying is the process of adding moisture to the air by passing it through
A. Chiller
B. Air conditioning plant
C. WashersDew point temperature is the temperature at which condensation begins when the air is cooled at constant
Which of the following increases during sensible heating of moist air
1. Relative Humidity
2. Humidity Ratio
3. Wet bulb temperature
4. Specific volume
Select the correct answer from codes given below:
Relative humidity is the ratio of:
In a saturated air-water vapour mixture, the
