Concept explainers
Air at 50% relative humidity is cooled isobarically at 1 atm absolute from 90°C to 25°C.
(a) Estimate the dew point and degrees of superheat of the air at 90°C.
(b) How much water condenses (mol) per cubic meter of feed gas? (See Example 6.3-2.)
(c) Suppose a sample of the 90°C air is put in a closed variable-volume chamber containing a mirror and the pressure is raised at constant temperature until a mist forms on the mirror. At what pressure (atm) would the mist form? (Assume ideal-gas behavior.)
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