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本文通过创建房间Zonal Model和热水供暖系统数学模型,模拟分析了室内空气温度场和速度场的分布及控制系统动态响应。而后利用测试室温作为反馈信号,对3种控制策略的控制效果和能耗进行了模拟。结果显示,基于ZonalModel信息的控制系统能够反映供暖系统的动态变化过程;仅采用室外气候补偿器时的室温波动较大;应用供水温度和散热器循环流量两级控制策略既可提高室内热舒适性和控制精度,又可获得10.5%～15.9%的节能效益。
In this paper, the mathematical model of Zonal Model and hot water heating system in a room is established to simulate and analyze the distribution of temperature and velocity fields of indoor air and the dynamic response of control system. Then the test room temperature is used as the feedback signal to simulate the control effects and energy consumption of the three control strategies. The results show that the control system based on ZonalModel information can reflect the dynamic change of heating system. The room temperature fluctuates only when outdoor climate compensator is used. The two-stage control strategy using water temperature and radiator circulating flow can improve indoor thermal comfort And control accuracy, but also get 10.5% to 15.9% energy saving.