Variable-air-volume

Variable-air-volume

(VAV)
A method of modulating the amount of heating or cooling effect that is delivered to a building by the HVAC system. The flow of air is modulated rather than the temperature. VAV systems typically consist of VAV boxes that throttle supply airflow to individual zones, some mechanism to control supply-fan flow to match box demand, and the interconnecting ductwork and components.
References in periodicals archive ?
In some areas, the modified HVAC System consists of central station air handlers with a variable-air-volume with reheat HVAC system.
Variable-air-volume systems adjust the rate of airflow based on the requirements of the space, working to optimise the airflow within HVAC ductwork.
The National Institute of Standards and Technology (NIST) has developed a set of algorithms for detecting faults in air-handling units (AHUs) and variable-air-volume (VAV) boxes that has been integrated into some control units.
With variable-air-volume and automatic temperature control built in, every zone can be thermostatically controlled.
Six 39T air-handlers provide cooling and ventilation to 67 model 35DN variable-air-volume (VAV) mixing boxes located throughout the building.
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