In this study, the Venturi valve combined with the air volume control was first integrated into a Venturi air volume balance valve, and the analysis and adjustment and mathematical regression curve analysis were carried out. system to test the effect of variable air volume control. The purpose of the experiment includes air volume balance and response speed. The equipment established in this research can simulate the VAV system of the building and set the flow of the local or overall system for its controller, so that it can achieve the dynamic simulation of the multi-regional dynamic variable air volume system and the air volume of each region. In this study, two kinds of air volume and various flow balances were tested, and it was found that the Venturi air volume balance valve can adjust the air volume according to the regression curve, and the accuracy can reach more than 95%. In a multi-region variable air volume (VAV) system composed of multiple Venturi air volume balance valves, according to the air volume set in this experiment, the parameter values of the controller are adjusted at the same time, so that the flow control of the system can be stable and respond quickly. The multi-zone air supply volume can reach the set air volume within seconds. The research results can be applied to the central air-conditioning VAV system to achieve the best air volume demand control, which is beneficial to the energy saving effect of the variable air volume of the fan, and the energy saving rate can reach 40~50%. The results of this study verify the feasibility of the Venturi air volume balance valve applied to the dynamic variable air volume system, which is important for air conditioning energy conservation and can effectively reduce air conditioning energy consumption.
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