Which of the following remains constant during evaporative cooling process with recirculated water supply ?
Correct answer: B. Wet bulb temperature
- A. Relative humidity
- B. Wet bulb temperature
- C. Partial pressure of vapour
- D. None of these
Explanation
Ideal evaporative cooling follows an approximately adiabatic saturation path, along which the wet-bulb temperature remains constant. Relative humidity and vapour partial pressure change as water evaporates.
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