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CAVC Damper

"Constant Air Volume Control Damper" is translated into English as "Constant Air Volume Control Damper". This refers to a damper used in HVAC (heating, ventilation and air conditioning) systems to control a constant flow of air.
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  • XC-11

  • XICHENG

  • 8414593000

"Constant Air Volume Control Damper" is translated into English as "Constant Air Volume Control Damper". This refers to a damper used in HVAC (heating, ventilation and air conditioning) systems to control a constant flow of air. In this type of system, the function of the damper is to regulate the air flow to maintain a constant air volume within the space, while also adjusting the air temperature to meet heating or cooling needs.


This type of constant air volume control damper is usually used together with a Constant Air Volume Control System to ensure that the system can flexibly adjust the air temperature while providing a constant air volume. This is important both to maintain a comfortable indoor environment and to increase energy efficiency.

variable air volume system control


Working principle of constant air volume control damper


The working principle of the constant air volume control damper involves HVAC (heating, ventilation and air conditioning) systems, and its goal is to maintain a constant air flow. The following is the basic working principle of the constant air volume control damper:


  1. Sensor detection: HVAC systems are often equipped with sensors that detect indoor temperature and air quality. This data is used for intelligent control of the system.

  2. Set Air Flow: The user or system administrator sets the required air flow. This can be determined based on the building type, usage requirements and prescribed standards.

  3. Controlling the fan: The system adjusts the fan speed based on sensor feedback and set air flow requirements. The speed of the fan directly affects the flow speed of air in the system.

  4. Adjusting the damper: The constant air volume control damper is located in the duct of the HVAC system and is responsible for adjusting the flow of air. Depending on the needs of the system, the dampers are operated automatically or by a control system to ensure that the required air flow is maintained.

  5. Temperature Regulation: As air flows through the system, its temperature is adjusted by heating or cooling equipment to meet the indoor air temperature set point.

  6. Feedback Control: The system continuously monitors the indoor environment through sensors and continuously adjusts the operation of fans and dampers to maintain constant air flow and temperature.


Through these steps, the constant air volume control damper can achieve effective control of indoor temperature under constant air flow. The advantage of this system is that it can provide stable ventilation while having certain energy efficiency.


Constant air volume control dampers are mainly used in HVAC (heating, ventilation and air conditioning) systems, especially where constant air flow needs to be maintained. 

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Here are some of the main application areas:


  • Commercial buildings: In commercial buildings, such as office buildings, shopping malls, and hotels, constant air volume control dampers are often used to ensure that constant air flow is maintained in various areas to provide a comfortable indoor environment.

  • Industrial facilities: In some industrial locations that require strict control of air flow, such as production workshops, laboratories, or clean rooms, constant air volume control systems can ensure proper ventilation and air quality.

  • Healthcare facilities: In healthcare settings such as hospitals, clinics and laboratories, this system can be used to maintain constant air flow within operating rooms and laboratories to meet hygiene and safety standards.

  • Educational Institutions: Schools, universities and research institutions may adopt this system to ensure that air quality in classrooms and laboratories is effectively controlled.

  • Hotels and Restaurants: In establishments such as hotels and restaurants, constant air volume control systems help maintain comfort in the indoor environment while providing efficient energy use.


Overall, constant air volume control dampers are suitable for a variety of buildings and applications that require consistent air flow within a space and the ability to adjust air temperature to meet changing heat load demands.

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