Relative humidity vs. moistening: evaluate the statement. Statement: “The relative humidity decreases as air gets wet (more moisture content).” Decide whether the statement is correct or incorrect.
Mechanical Engineering
Heat Transfer, Refrigeration and Air Conditioning
Difficulty: Easy
Choose an option
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AAgree (statement is correct)
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BDisagree (statement is incorrect)
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CTrue only at constant dry-bulb temperature
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DTrue only above the dew-point temperature
Answer
Correct Answer: Disagree (statement is incorrect)
Explanation
Concept/ApproachAt a given temperature, adding moisture moves the state toward saturation; thus the relative humidity rises, not falls. While RH also depends on temperature, the blanket statement that RH decreases as air gets wetter is incorrect.
Final AnswerDisagree (statement is incorrect).