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A temperature and time-sharing dynamic control approach for space heating of buildings in district heating system

机译：地区供热系统中建筑物空间加热温度和时间分享动态控制方法

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摘要

Poor indoor temperature control level is the most common issue of building space heating in Chinese district heating system (DHS). The aim of this study was to provide on-demand heating for the buildings. A temperature and time-sharing dynamic control approach was developed by integrating three energy saving heating patterns. Given that different heating patterns had different set temperatures, unreasonable patterns switching time would cause indoor temperature to deviate from set value. To address this issue, equivalent thermal capacity of building was introduced to establish an indoor temperature prediction model and to determine the appropriate switching time. The practical application of proposed approach was based on the control system with wireless indoor temperature monitoring. A group of buildings with the same demand temperature could be controlled by one control system. A DHS in a university was selected as a case study to validate the proposed method. The experimental works include short-term and long-term validation. Short-term daily comparative experiments showed that the approach could yield heat-saving and heating on-demand for different buildings. Four heating seasons & rsquo; long-term operation data indicated the approach could save annual heat use by 14.6%e28.7%. The energy-saving effect also yielded considerable economic and environmental benefits.(c) 2021 Elsevier Ltd. All rights reserved.
机译：室内温度控制水平差是中国区供暖系统建筑空间供暖最常见的问题（DHS）。本研究的目的是为建筑提供按需供暖。通过整合三个节能加热模式开发了一种温度和时间分享动态控制方法。鉴于不同的加热模式具有不同的设定温度，切换时间不合理的图案会导致室内温度偏离设定值。为了解决这个问题，引入了相同的建筑物的热容量来建立室内温度预测模型，并确定适当的切换时间。所提出的方法的实际应用是基于具有无线室内温度监测的控制系统。一组具有相同需求温度的建筑物可以由一个控制系统控制。选择了大学的DHS作为案例研究，以验证提出的方法。实验工程包括短期和长期验证。短期每日比较实验表明，该方法可以为不同建筑物产生热量节约和供暖。四个加热季节＆rsquo;长期运营数据表明，该方法可将年度热量省去14.6％E28.7％。节能效果也产生了相当大的经济和环境效益。（c）2021 elestvier有限公司保留所有权利。

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