Question

The humidity at dry-bulb temperature of 20^oC is 12% and the humidity at dry-bulb temperature of 23^oC is 3%, what is the slope of adiabatic cooling line?

(a) -0.01

(b) -0.02

(c) -0.03

(d) -0.05

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This question is from Degrees of Freedom Analysis in Steady-State Process topic in section Humidity Charts & their Use, Analysis of the Degrees of Freedom in a Steady – State Process, Solving Material and Energy Balances Using Process and Unsteady State Material and Energy Balances of Basic Chemical Engineering

Answer 1

Right choice is (c) -0.03

Best explanation: Slope of adiabatic cooling line = (0.12 – 0.03)/(20 – 23) = -0.03.