楼宇空调节能控制研究与仿真

Energy-Saving Control Research and Simulation for Building Air-Conditioning System

风机控制是中央空调系统调节和节能的重要环节。基于空调房间恒温恒湿特征建立定风量(CAV)和变风量(VAV)两种方式下的空调房间数学模型,并设计风机的模糊PID控制策略。在Simulink中分别采用常规PID控制和模糊PID控制进行仿真,结果表明采用模糊PID控制策略的调节时间短、不存在超调现象,变风量方式可节省风机的运行能耗。

Fan control plays an important role in central air-conditioning system regulation and energy saving.Two mathematical models of air-conditioned room under constant air volume(CAV) and variable air volume(VAV) were built on the basis of the constant temperature and humidity in the air-conditioned room.The fuzzy PID control strategy of fans was designed.The conventional PID control and the fuzzy PID control were simulated in Simulink.As the results indicate,the fuzzy PID control strategy has short adjustment time;there is no overshoot;VAV mode could save operating energy of fan.