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Hybrid ventilation in an institutional building: Modeling and predictive control

机译：机构建筑物中的混合通风：建模和预测控制

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This paper presents an experimental and numerical study of predictive control of a hybrid ventilation system in an institutional building with emphasis on thermal comfort. A 17-story high institutional building with a large amount of exposed structural concrete is used as a case study to test different control strategies. A model of the entrance region of a typical floor is developed, calibrated from full-scale tests, and validated on a different set of measurements. It is used to estimate the heat removed from the concrete floor and the impact on thermal comfort. The system is currently operating based on heuristic control, with an exterior air temperature setpoint above which the air is allowed into the corridors, which are buffer spaces. With input measured data from 12 typical days, the model is used to compare this strategy to reactive and predictive control strategies. A control strategy based on data of the previous hour (reactive) is expected to quintuple the energy savings potential, but reduce thermal comfort. A predictive control strategy satisfies thermal comfort, but also increases energy savings potential. Lowering thermal comfort criteria during the night in order to precool the building further increases energy savings potential. A prediction horizon of 1 h and a control horizon of 15 min provide satisfactory thermal comfort, while keeping the computational time and forecast uncertainty to reasonable levels for a typical floor. This result provides the basis for the development of an integrated predictive control strategy for the whole building.
机译：本文介绍了对混合通风系统的预测控制的实验和数值研究，其重点是热舒适性的公共建筑。案例研究使用17层高的机构建筑，其中包含大量裸露的结构混凝土，以测试不同的控制策略。开发了典型地板的入口区域模型，并通过全面测试对其进行了校准，并在一组不同的测量值上进行了验证。它用于估计从混凝土地板上散走的热量以及对热舒适性的影响。该系统当前基于启发式控制进行操作，具有外部空气温度设定点，高于该设定点的空气被允许进入走廊，走廊是缓冲空间。根据输入的来自12个典型天的测量数据，该模型用于将该策略与反应性和预测性控制策略进行比较。预计基于前一小时（无功）数据的控制策略将使节能潜力提高五倍，但会降低热舒适性。预测性控制策略既满足热舒适性，又增加了节能潜力。在夜间降低热舒适性标准以对建筑物进行预冷会进一步提高节能潜力。 1 h的预测范围和15 min的控制范围提供了令人满意的热舒适性，同时将计算时间和预测不确定性保持在典型地板的合理水平。该结果为整个建筑物的综合预测控制策略的开发提供了基础。

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