Atmospheric air at 40°C and 10% relative humidity is cooled with a swamp cooler to 25°C. Use the psychrometric chart to estimate the final humidity.
A) 55%
B) 45%
C) 35%
D) 25%
A) 55%
Identify the state represented by 40°C and 10% relative humidity. To locate state 2, move along a constant-enthalpy line up at an angle to the left. When the dry-bulb temperature of 25°C is reached, we see that the humidity is about 55%.
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