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摘要 空调机组的控制调节不仅对风机能耗有重要影响，而且会影响水系统的健康运行。通过对一个案例的具体分析，归纳了影响空调机组运行的三个关键因素：调节过程的时间步长是否与控制对象的惯性相一致；是否具备调节风量的手段；控制是否考虑各空调机组之间的影响。对空调机组的运行优化应从这三方面着手。介绍了具体的改造案例和节能收益。 关键词 空调机组 控制优化 中庭 节能 Case study on HVAC energy efficient optimization and renovation (Part Ⅲ): Air handling units By Chang Cheng, Wei Qingpeng, Jiang Ziyan, Cai Hongwu, Chan Cary, Wu Michael and Chan Jason Abstract The control of air handling units (AHU) affects energy consumption of the fans and operation characteristics of the water system. Through a typical case, summarizes three key factors influencing the operation of AHUthe match of regulation time step and inertia of the controlled object, the fan speed regulation and the influence among AHU serving one large space. The operation optimization of AHU should be started with these three factors. Presents the optimization case and its energy saving effect. Keywords air handling unit, control optimization, atrium, energy efficiency