Dew Point Temp
An air conditioning unit pumps dry air into a room at 14°C. If the dew-point temperature is 12.2°C, what is the relative humidity (%)?
Expand Hint
Properties of an air-water vapor mixture at a fixed pressure are given in graphical form on a psychrometric chart as provided in problem statement. When the system pressure is 1 atm, an ideal-gas mixture is assumed.
Hint 2
Properties of an air-water vapor mixture at a fixed pressure are given in graphical form on a psychrometric chart as provided in problem statement. When the system pressure is 1 atm, an ideal-gas mixture is assumed.
In the psychrometric chart, let’s find where the 12.2°C dew-point temperature (1) intersects with the saturation curve (2). From there, follow the line horizontally right until the dry bulb temperature (3) is reached (4). The problem statement is asking for the associated relativity curve in this intersection.
The relative humidity is 90%.
90%
Time Analysis
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Similar Problems from FE Sub Section: Psychrometric Charts
258. Dew Point
307. Relative Humidity
618. Wet Bulb Temp
Similar Problems from FE Section: Psychrometric
258. Dew Point
307. Relative Humidity
618. Wet Bulb Temp