What is the primary effect of a cooling coil in centralized humidification systems?

What is the primary effect of a cooling coil in centralized humidification systems?

• A. Dehumidification while maintaining comfort levels
• B. Humidification of air
• C. Heating of air
• D. Filtration of air

Answer: (C)

The cooling coil’s main job is to cool air and remove moisture from it. When air passes over the coil, its temperature drops. If the air is cooled below its dew point, water condenses on the coil surface, taking latent heat out of the air and lowering humidity. In centralized humidification systems, you’re balancing humidity to a set point, so the coil is typically used to dehumidify and cool as needed, not to add moisture. Heating the air would require a heating element rather than a cooling coil, and filtration happens elsewhere (in the air filters).

The cooling coil’s main job is to cool air and remove moisture from it. When air passes over the coil, its temperature drops. If the air is cooled below its dew point, water condenses on the coil surface, taking latent heat out of the air and lowering humidity. In centralized humidification systems, you’re balancing humidity to a set point, so the coil is typically used to dehumidify and cool as needed, not to add moisture. Heating the air would require a heating element rather than a cooling coil, and filtration happens elsewhere (in the air filters).