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Damper (flow) Opposed blade dampers in a mixing duct. A damper is a valve or plate that stops or regulates the flow of air inside a duct, chimney, VAV box, air handler, or other air-handling equipment. A damper may be used to cut off central air conditioning (heating or cooling) to an unused room, or to regulate it for room-by-room temperature ...
HVAC control system. HVAC (Heating, Ventilation and Air Conditioning) equipment needs a control system to regulate the operation of a heating and/or air conditioning system. Usually a sensing device is used to compare the actual state (e.g. temperature) with a target state. Then the control system draws a conclusion what action has to be taken ...
In the lower middle is the capacitor. Heating, ventilation, and air conditioning ( HVAC) [1] is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. Its goal is to provide thermal comfort and acceptable indoor air quality.
These dampers may be manual or automatic. Zone dampers provide automatic control in simple systems while variable air volume (VAV) allows control in sophisticated systems. Smoke and fire dampers. Smoke dampers and fire dampers are found in ductwork where the duct passes through a firewall or firecurtain. Smoke dampers are driven by a motor ...
The Air Movement and Control Association International, Inc. ( AMCA) is an American trade body that sets standards for Heating, Ventilation and Air Conditioning ( HVAC) equipment. It rates fan balance and vibration, aerodynamic performance, air density, speed and efficiency. AMCA was formed in 1955 from several earlier trade associations which ...
Fire damper. Interior of German mechanical fire damper inside of a galvanised steel duct. 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. [1]
Air handler. An air handling unit; air flow is from the right to left in this case. Some AHU components shown are. An air handler, or air handling unit (often abbreviated to AHU ), is a device used to regulate and circulate air as part of a heating, ventilating, and air-conditioning ( HVAC) system. [1] An air handler is usually a large metal ...
Smoke dampers are usually installed by sheet metal contractors. Smoke dampers can be activated by the fire alarm system, usually initiated by smoke detectors, or interlocked with a fire suppression system. Smoke dampers close by an electric or pneumatic actuator, or a spring actuator, and can be either manually reset or driven open on a reset ...