Wet Bulb Temp
Find the wet-bulb temperature (°C) if the relative humidity is 60% and the actual air temperature is 19°C.
![](/img/v3/e06c03ad-3085-4053-a609-41f3ae87dcd8.png)
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.
![](/img/v3/f8c65cb3-e61a-4c90-9ae7-3db601a53fec.png)
Hint 2
![](/img/v3/1427db6f-19b6-4b7b-b4d3-002f66ab9586.png)
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.
![](/img/v3/ad1e7463-6b2b-47d1-aa36-5a527a696f58.png)
In the psychrometric chart, let’s find where the 19°C dry bulb temperature (the temperature of air measured by a thermometer freely exposed to air) intersects with the 60% humidity curve (2). The wet-bulb line that crosses this intersection is what the problem is asking for (3).
![](/img/v3/a8edf030-7b1a-4981-99d5-b12ca07548e4.png)
The wet-bulb temperature is around 14.2°C.
14.2°C
Time Analysis
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Similar Problems from FE Sub Section: Psychrometric Charts
258. Dew Point
307. Relative Humidity
623. Dew Point Temp
Similar Problems from FE Section: Psychrometric
258. Dew Point
307. Relative Humidity
623. Dew Point Temp