Multiple choice

Water at 42° is sprayed into a stream of air at atmospheric pressure, dry bulb temperature at 40°C and a wet bulb temperature at 20°C. The air leaving the spray humidifier is not saturated. Which of the following statements is true?

  1. Air gets cooled and humidified.

  2. Air gets heated and humidified.

  3. Air gets heated and dehumidified.

  4. Air gets cooled and dehumidified.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

$Givan : t_{sp}=42^0C,t_{db}=40^0C,t_{wb}=20^0C \\ \text{Here we see that $t_{sp}>t_{db}$}\\ \text{Here air gets heated, Also water is added to it, so it gets humidified}$

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