Question
Download Solution PDF______ is defined as the temperature to which the air would have to cool (at constant pressure and constant water vapour content) in order to reach saturation.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Dew point temperature.
Key Points
- Dew point temperature (DPT):
- It is a temperature at which moisture present in the atmosphere starts condensing or it is the temperature at which the first droplet of moisture is formed.
- As we know that for each pressure, the air has a specific saturation temperature, therefore for fully saturated air DBT, WBT and DPT are equal.
- When the relative humidity of the air is 100%, i.e the air is saturated, the dew point temperature (DPT) equals the wet-bulb temperature (WBT), which is also equal to the dry-bulb temperature.
- So DBT = WBT = DPT
Additional Information
- Relative humidity:
- It is defined as the ratio of the mass of vapour to the mass of vapour under saturation conditions.
- Relative humidity represents vapour absorption capacity.
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