Answer :
Final answer:
The effectiveness of vertical ventilation can be reduced by high temperature and humidity, physical obstructions that cause pressure drop and disrupt airflow, and inadequately designed mechanical ventilation systems.
Explanation:
Factors that can reduce the effectiveness of vertical ventilation include various environmental and structural conditions. High levels of temperature and humidity can lead to increased concentrations of indoor pollutants, making it harder for vertical ventilation to maintain good air quality.
In addition, physical obstructions such as insect screens, evaporative cooling pads, and even certain building design elements can cause pressure drop and disrupt airflow. This results in decreased air exchange rates and impaired ventilation efficiency. Moreover, any mechanical ventilation systems must be sufficiently designed to overcome these added resistances to airflow, ensuring adequate ventilation throughout the structure.
