What is a typical application of centralized humidification?

What is a typical application of centralized humidification?

• A. To maintain comfort and health of occupants and prevent condensation.
• B. To reduce energy use by cooling the air.
• C. To filter out pollutants from outdoor air.
• D. To increase air exchange rates.

Answer: (C)

Centralized humidification is used to add moisture to the supply air so indoor humidity stays in a comfortable, healthy range. When humidity is kept at the right level, occupants feel more comfortable and conditions that dry air can aggravate (like dry skin, irritated eyes and throat) are reduced. It also helps protect hygroscopic materials (wood, paper, certain electronics) from damage due to overly dry air and can minimize static electricity. Humidification isn’t primarily about filtering pollutants, increasing ventilation, or cooling the air; filtration is handled by air-cleaning devices, ventilation rates are controlled by the HVAC outdoor-air strategy, and humidification adds latent load rather than cooling. So the typical application is maintaining comfort and health of occupants and protecting materials by controlling humidity.

Centralized humidification is used to add moisture to the supply air so indoor humidity stays in a comfortable, healthy range. When humidity is kept at the right level, occupants feel more comfortable and conditions that dry air can aggravate (like dry skin, irritated eyes and throat) are reduced. It also helps protect hygroscopic materials (wood, paper, certain electronics) from damage due to overly dry air and can minimize static electricity. Humidification isn’t primarily about filtering pollutants, increasing ventilation, or cooling the air; filtration is handled by air-cleaning devices, ventilation rates are controlled by the HVAC outdoor-air strategy, and humidification adds latent load rather than cooling. So the typical application is maintaining comfort and health of occupants and protecting materials by controlling humidity.