What does stratification in an occupied space refer to?

Stratification in an occupied space primarily refers to the phenomenon of vertical temperature variations within that space. This occurs when warmer air, being less dense, rises to the upper portions of the room or building, while cooler air settles closer to the floor. As a result, occupants may experience differences in temperature levels depending on their height relative to the ground.

Understanding stratification is crucial for HVAC professionals because it directly impacts comfort levels and energy efficiency. For instance, if a room experiences significant stratification, it may prompt the heating system to work harder to maintain a consistent temperature throughout the space. Proper HVAC design and air distribution methods can mitigate the effects of stratification, ensuring that the entire area is heated or cooled effectively, promoting comfort and saving energy.

While the other options pertain to different aspects of building environments—air pressure differences might affect ventilation, humidity buildup relates to moisture control, and noise levels involve sound transmission—none of these concepts encapsulate the specific concept of stratification as it relates to temperature variations in an occupied space.