Global hydraulic stability analysis for dynamic regulation in multi-zone variable air volume air-conditioning system

作     者：Tianyi Zhao Zhe Li Xiuming Li Honglian Peng 

作者机构：Institute of Building EnergySchool of Civil EngineeringFaculty of Infrastructure EngineeringDalian University of TechnologyDalian 116024China Anhui Province Key Laboratory of Intelligent Building&Building Energy SavingAnhui Jianzhu UniversityHefei 230022China School of MetallurgyNortheastern UniversityShenyang 110819China School of ArchitectureHarbin Institute of TechnologyHarbin150006China 

出 版 物：《Energy and Built Environment》 (能源与人工环境（英文）)

年 卷 期：2024年第5卷第4期

页      面：592-606页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Grant No.52,078,096) the Fundamental Research Funds for the Central Universities (Grant No.DUT20JC47) the open Foun-dation of the Key lab of Anhui Province Key Laboratory of Intelligent Building&Building Energy Saving (Grant No.IBES2021KF03) 

主　　题：VAV system Global hydraulic stability Adjustment strategy VAV box damper position 

摘      要：Variable air volume air-conditioning system(VAV system)has multiple control loops that interfered with each other,which has serious impacts on its actual operation *** solve this problem,the index of global hydraulic stability,which takes the physical quantity of the pipe network pressure and the air flow rate as reference,is proposed based on Graph theory,and a pipe network model for the hydraulic calculation is ***,the simulation study based on the actual operation data is carried out in *** distribution of the pressure and the air flow in the pipe network is obtained,and the action interferences among adjacent terminal boxes are analyzed based on global hydraulic stability under damper position regulation strategy(DP strategy)and fan frequency regulation strategy(FF strategy).Results indicate that the FF strategy can decrease the total change distance of the damper position compared with the DP strategy,and then the fluctuation of the pressure and the air flow can be *** contribution of this study is to provide an evaluation index of global hydraulic stability,which can also be used in other air-conditioning systems with multiple terminals and multiple control loops.