Dampers can also be classified based on their application, and the following are some of the main types: Balancing dampers (volume dampers) Face and bypass dampers. Fire dampers.
Static and Dynamic Dampers
In these systems, dynamic fire dampers are needed. These dampers often have springs or other mechanisms to force the damper close in case of a fire. In addition to static or dynamic, fire dampers also come in Type A, Type B, and Type C varieties.
HVAC dampers are most commonly located in the main trunk line right before and after any major junctions. They can also be located at certain points on multiple system ducts, with two dampers found on every main line 90 degrees apart.
There are three types of damper. Telescopic dampers look like telescopes and shorten in the same way. One end is bolted to the axle , the other to the body. Strut inserts are similar, but are designed to fit inside a MacPherson strut (See Renewing MacPherson-strut inserts ).
Class A fires – are fires involving organic solids like paper, wood, etc. Class B fires – are fires involving flammable liquids. Class C fires – are fires involving flammable gasses.
Type-A dampers are the easiest and fastest type to install and are mostly used in low-pressure part of duct systems (up to 2” w.c.). Type-B Fire Damper: Used when airflow or velocity in the duct is a concern. The stack of blades in the fire damper frame is kept out of the air stream.
Step 1: Identify your dampers. The usual method is using schematics of the building. The original architect and/or builder will have produced plans showing all ventilation ductwork, access points and damper installations.
Automatic dampers are controlled by a thermostat or other system controls. When the temperature in a certain part of your home reaches a certain level, the damper will open or close to allow more or less air to flow through the system. This ensures that the temperature in your home is consistent and comfortable.
A backdraft damper is similar to a fire damper in that it features blades within a frame, but the purpose of these dampers differ. Backdraft dampers allow air to flow into or out of a space in one direction while preventing a return flow.
Common Types of HVAC Dampers
These types include radial, rectangular, round-tube, collar-tube, shutter and blade-style dampers. Industrial applications may require custom-designed dampers, but they generally perform the same functions.
There are 3 primary types of damping: overdamping, critical damping, and under damping. We will explore what each of these 3 types of damping entails.
Fire dampers (or fire shutters) are passive fire protection products used in heating, ventilation, and air conditioning (HVAC) ducts to prevent and isolate the spread of fire inside the ductwork through fire-resistance rated walls and floors.
These pipes are manufactured as per IS 13592 and are offered with Integrated Ringfit and Selfit socket systems. SWR pipes are offered in two primary types; type A for rainwater and vents, and type B for soil and waste discharge.
While both types of dampers serve the purpose of fire safety, they are used in different contexts. Fire dampers are essential for preventing the spread of flames through ducts, while radiation dampers are specifically designed to limit heat transfer where radiation is a concern.
Active damper chokes down the air flow by closing the exiting gases, while passive doesn't choke the air, just slows the air down at the primary air ports ...
Oxygen, heat, and fuel are frequently referred to as the "fire triangle." Add in the fourth element, the chemical reaction, and you actually have a fire "tetrahedron." The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.
Did you think there was a fire and there wasn't? In both of these cases there would be no legal repercussions, unless you damaged something, which is possible using a dry chemical extinguisher around electrical equipment. If it was malicious however there could be charges.
It's easy to remember how to use a fire extinguisher if you can remember the acronym PASS, which stands for Pull, Aim, Squeeze, and Sweep. Pull the pin.
When contemplating the essential components for your HVAC system configuration, dampers play a vital role. Dampers, including various types of dampers such as automatic dampers, manual dampers, parallel dampers, opposed dampers, balance dampers, bypass dampers, and fire dampers, become a crucial consideration.
No matter the application, all shock absorbers fit into one of three broadly defined types conventional telescopic shock absorbers, struts or spring seat shocks.
Type A fire dampers have their blades in the airstream and so constrict airflow by the depth of the folded blades. Type B fire dampers have their blades in a pocket such that they are out of the airstream.