Study Of Energy-Saving Control Of Central Air Conditioning System Based On Trnsys

In the backdrop of the energy crisis, the studies on energy-saving control of Central Air-Conditioning System are of great practical and economic significance. However, Central Air-Conditioning is more than one component, nonlinear and has a large time delay. It is not easyto build its modeling system and be well controlled.Thus, although there is a lot of researchon energy saving of Central Air-Conditioning System, most of the studies did not take pointof view on the entire Central Air-Conditioning System, combine with the actual building toestablish an effective model; In addition, HVAC and Automatic Control belong to differentprofessions, which results in most of the researchers having understanding disconnects onCentral Air-Conditioning control strategy and the whole system; There are many CentralAir-Conditioning control methods and systems, but there is no evaluation system to paritytheir control and energy-saving effects in theory.To address the problems above, the author first writes the programs of CentralAir-Conditioning modules, establishes a simulation model of the entire building and theCentral Air-Conditioning system in TRNSYS, and then joint TRNSYS and Matlab/Simulinkto establish a simulation system.Then, he studies the fuzzy control strategy on chilled watervariable flow control and VAV terminal variable air volume control models of CentralAir-Conditioning System, and analyzes their energy consumption and controleffects.Ultimately, a control group system based on fuzzy control is designed,simulationresults and the actual applications show that the group control is a good method to achieveefficient energy-saving.The TRNSYS and Matlab/Simulink joint simulation system established in this paper isof great promotion for the study of energy-saving control strategies of CentralAir-Conditioning system.On this joint simulation system, various control methods can befreely designed and paritied.The group control designed in this paper have great practicalsignificance to achieve energy-saving of Central Air-Conditioning system.