Contrastive experimental study on outdoor air control strategy of VAV air conditioning system

Presents the common outdoor air control strategies used in VAV air conditioning system, analyses the calculation method of outdoor air rate based on CO2 concentration model. Studies the control effect of constant outdoor air ratio and variable outdoor air ratio control strategies on outdoor air distribution in a whole system and different parts through comparative experiments. The results show that the uneven distribution of outdoor air exists in both control strategies. On this basis, experimentally studies the control effect and energy saving of variable outdoor air ratio control strategy on indoor air quality. The results show that, compared with maxY-V, MSE-V can reduce energy consumption to a greater extent under the same indoor air quality control effect, and under the same conditions, the energy consumption of air conditioning system with MSE-V strategy is 6.76% lower than that with maxY-V strategy.