A VAV box is an important component of an HVAC system in large commercial or industrial buildings. It regulates the amount of cooling/heating targeted to specific areas, making the system more efficient. Modern VAV boxes have advanced control equipment linked to the central computer and pressure sensors to detect air pressure. Research is ongoing to improve VAV boxes, including minimizing noise and establishing diagnostic response systems.
A variable air volume box, more commonly known as a VAV box, is an essential part of air conditioning in any large industrial or commercial building. Air conditioning is part of a larger entity called an HVAC system, which includes heating, ventilation, air conditioning, and control systems. VAV box is an HVAC component along with other hardware components such as coils and drip trays, humidification and dehumidification equipment, air dampers, air filters, ducts, exhaust systems, return air plenums, etc. . This box is in contrast to a CAV, or constant air volume system.
This air conditioning component is just what it sounds like: a box that can hold a varying amount of air. It helps make air conditioning systems more efficient by regulating the amount of cooling targeted to any specific room or area. This is referred to as the cooling/heating load. A room whose windows face the sun most of the day will have a higher cooling load than a room in the shade. When a VAV box restricts a valve to let in less air, it decreases the amount of energy consumed by the fans that direct the air around the building.
Modern VAV boxes are equipped with advanced control equipment that supports automated airflow changes based on efficiency. This control equipment is also linked to the central computers for a building’s entire HVAC system. Tiny pressure sensors detect air pressure in the box, and hinges open and close the doors to manipulate airflow and volume.
Research continues to improve variable volume cassettes, installed by the millions all over the world. Areas for improvement include minimizing noise, reducing the need for maintenance, fine-tuning control systems, and establishing diagnostic response systems that alert maintenance teams and provide them with accurate information about malfunctions beforehand. who need to physically look at the device.
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