Simulation design of automatic control system of variable air volume air conditioning under simple air volume control algorithm

被引：0

作者：

Hu Nan Financial & Industry Vocational-Technical College, Hu Nan ^{[1
]}

421000, China

不详 ^{[2
]}

不详 ^{[3
]}

机构：

来源：

Int. J. Mech. Appl. Mech. | 2020年 / 8卷 / 70-76期

关键词：

Air conditioning;

D O I：

暂无

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摘要：

To solve the shortcomings of traditional proportional integral control algorithm in variable air volume (VAV) air conditioning automatic control system, such as poor control precision, low sensitivity, and system instability, in this study, a simple total air volume control algorithm is proposed to realize automatic control of variable air volume air conditioning. Firstly, the theory of simple total air volume control algorithm and the theory of modified total air volume control algorithm are introduced. Then the initial adjustment of VAV system is introduced. Finally, the traditional total air volume control algorithm, the simple total air volume control algorithm, and the modified total air volume control algorithm are simulated. The results show that the change of the fan performance curve caused by the total air volume control algorithm based on proportional integration (PI) lags behind the change of the air valve opening degree on the pipe network characteristic curve, which is not conducive to energy saving. The simple total air volume control algorithm proposed in this study is improved than the modified total air volume control algorithm in controlling the fluctuation at end air volume. The fluctuation of the end air volume is basically the same as the opening degree of the air valve, so the energy saving effect is good. This research has promoted the application of VAV in the construction industry. © 2020, Cefin Publishing House. All rights reserved.

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