Question

In HVAC systems, what is the typical application of parallel blade dampers, and how do they function in terms of operation? Conversely, how are opposed blade dampers typically utilized, and what is their role in HVAC systems?

Answer 1

Parallel blade dampers are used for controlling airflow volume, while opposed blade dampers are used for airflow balancing in HVAC systems.

Step-by-step explanation:

In HVAC systems, parallel blade dampers are typically used to control the volume of airflow. They consist of multiple blades that can be rotated simultaneously to open or close the damper. By adjusting the position of the blades, the amount of air passing through the damper can be regulated. This is useful in situations where precise control of airflow is required, such as in variable air volume (VAV) systems or duct zoning.

On the other hand, opposed blade dampers are often used for airflow balancing. They have blades that rotate in the opposite direction, allowing for more precise adjustment of airflow at different positions within the duct or system. The individual blades can be adjusted independently, making opposed blade dampers suitable for applications that require fine-tuning of airflow distribution.