What is ineffective ventilation also known as?

Ineffective ventilation is commonly referred to as short circuiting. This term describes a scenario where the flow of air bypasses the intended areas, leading to inadequate air exchange and reduced air quality. In a short circuiting situation, fresh air does not appropriately mix with the stale air needing to be exhausted, which can result in pockets of stale air persisting in a space. This phenomenon can occur when ventilation systems are poorly designed or not functioning properly, causing a failure to effectively circulate air throughout the environment.

In contrast, the other options represent different concepts or types of ventilation. Positive pressure ventilation, for instance, involves artificially increasing the air pressure in a space to push out stale air, which is quite the opposite of ineffective ventilation. Natural ventilation relies on natural forces like wind or temperature differences to ventilate a space, without mechanical assistance, which can also be effective under certain conditions. Forced air movement refers to the use of fans or blowers to actively circulate air, aiming for efficiency rather than ineffectiveness.