Question

Explain at what circumstances the following statements are true in
Psychrometric charts:
i) “Dew Bulb Temp and Wet Bulb Temp are different”
ii)“Dew Bulb Temp and Wet Bulb Temp are same”
iii) “Water droplets form on the surface of chilled water bottle”

Answer 1

i) Whenever the relative humidity is less than 100% the Dew bulb temperature and wet bulb temperature are different.

ii) When the relative humidity becomes 100% the Dew bulb temperature and wet bulb temperature are same

iii) When the water vapour in air comes in contact with chilled surface of bottle the water vapour reaches dew point temperature and get condensed so droplets are formed on the surface of chilled water bottle

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