When the temperature and humidity of air is low, we usually use _______________ draft cooling tower?
Correct answer: B. Natural
- A. Forced
- B. Natural
- C. Induced
- D. None of these
Explanation
Natural-draft towers use the density difference between warm, moist tower air and cooler ambient air to establish airflow. They are commonly suitable when ambient air is cool and relatively dry, giving a strong natural-draft effect.
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