Which one of the following psychrometric processes is represented by the line 1-2 in the figure?
Which one of the following psychrometric processes is represented by the line 1-2 in the figure?
Show Hint
- Cooling and humidification
- Cooling and dehumidification
- Heating and humidification
- Heating and dehumidification
The Correct Option is C
Solution and Explanation
Step 1: Understand the psychrometric chart.
The psychrometric chart plots specific humidity (vertical axis) against the dry bulb temperature (horizontal axis). Key observations: - Moving to the right along the dry bulb temperature axis indicates heating. - Moving up along the specific humidity axis indicates humidification (addition of moisture).
Step 2: Analyze the line 1-2 in the figure.
The process line 1-2 shows: 1. An increase in dry bulb temperature (movement to the right). 2. An increase in specific humidity (movement upward). This indicates that the air undergoes both heating and humidification.
Step 3: Verify options.
Option (A): Incorrect, as it involves cooling and an increase in humidity, which does not match the process.
Option (B): Incorrect, as it involves cooling and dehumidification, not heating and humidification.
Option (C): Correct, as it matches the observed process of heating and humidification.
Option (D): Incorrect, as it involves heating and dehumidification, not humidification.
Conclusion: The psychrometric process represented by the line 1-2 is \( \text{(C) Heating and humidification} \).
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