SaraNextGen.Com


Air at $70^{\circ} \mathrm{C}$ and 0.015 humidity ratio is cooled adiabatically by spraying water. The final temperature of the air is $55^{\circ} \mathrm{C}$. Specific heat capacities of dry air and water vapour are 1.005 and $1.88 \mathrm{~kJ} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$, respectively and latent heat of vapourization of water at $0{ }^{\circ} \mathrm{C}$ is $2501.7 \mathrm{~kJ} \mathrm{~kg}^{-1}$. The absolute humidity of the outlet air, in $\mathrm{kg}$ water vapour per $\mathrm{kg}$ dry air is
(A) 0.017
(B) 0.019
(C) 0.021
(D) 0.023


Question ID - 157391 | Toppr Answer

Air at $70^{\circ} \mathrm{C}$ and 0.015 humidity ratio is cooled adiabatically by spraying water. The final temperature of the air is $55^{\circ} \mathrm{C}$. Specific heat capacities of dry air and water vapour are 1.005 and $1.88 \mathrm{~kJ} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$, respectively and latent heat of vapourization of water at $0{ }^{\circ} \mathrm{C}$ is $2501.7 \mathrm{~kJ} \mathrm{~kg}^{-1}$. The absolute humidity of the outlet air, in $\mathrm{kg}$ water vapour per $\mathrm{kg}$ dry air is
(A) 0.017
(B) 0.019
(C) 0.021
(D) 0.023

1 Answer - 5876 Votes

3537

Answer Key : (C) -

(C) 0.021



SaraNextGen