Question

Psychrometry deals with between which type of phases?

(a) Gas-liquid

(b) Gas-solid

(c) Gas-Vapour

(d) Vapour-Solid

The question was asked in unit test.

My doubt stems from Convective Mass Transfer in section Mass Transfer of Bioprocess Engineering

Answer 1

Correct choice is (c) Gas-Vapour

Best explanation: Psychrometry is concerned with the physical and thermodynamic properties of gas-vapor mixtures. Although the principles of psychrometry apply to any physical system consisting of gas-vapor mixtures, the most common system of interest is the mixture of water vapor and air, because of its application in heating, ventilating, and air-conditioning and meteorology. In human terms, our thermal comfort is in large part a consequence of not just the temperature of the surrounding air, but (because we cool ourselves via perspiration) the extent to which that air is saturated with water vapor.